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 #include "settings.h"
  40 #include "profiler.h"
  41 #include "log.h"
  42
  43 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
  44
  45 #define BLOCK_EMERGE_FLAG_FROMDISK (1<<0)
  46
  47 class MapEditEventIgnorer
  48 {
  49 public:
  50         MapEditEventIgnorer(bool *flag):
  51                 m_flag(flag)
  52         {
  53                 if(*m_flag == false)
  54                         *m_flag = true;
  55                 else
  56                         m_flag = NULL;
  57         }
  58
  59         ~MapEditEventIgnorer()
  60         {
  61                 if(m_flag)
  62                 {
  63                         assert(*m_flag);
  64                         *m_flag = false;
  65                 }
  66         }
  67
  68 private:
  69         bool *m_flag;
  70 };
  71
  72 void * ServerThread::Thread()
  73 {
  74         ThreadStarted();
  75
  76         log_register_thread("ServerThread");
  77
  78         DSTACK(__FUNCTION_NAME);
  79
  80         BEGIN_DEBUG_EXCEPTION_HANDLER
  81
  82         while(getRun())
  83         {
  84                 try{
  85                         //TimeTaker timer("AsyncRunStep() + Receive()");
  86
  87                         {
  88                                 //TimeTaker timer("AsyncRunStep()");
  89                                 m_server->AsyncRunStep();
  90                         }
  91
  92                         //infostream<<"Running m_server->Receive()"<<std::endl;
  93                         m_server->Receive();
  94                 }
  95                 catch(con::NoIncomingDataException &e)
  96                 {
  97                 }
  98                 catch(con::PeerNotFoundException &e)
  99                 {
 100                         infostream<<"Server: PeerNotFoundException"<<std::endl;
 101                 }
 102         }
 103
 104         END_DEBUG_EXCEPTION_HANDLER(errorstream)
 105
 106         return NULL;
 107 }
 108
 109 void * EmergeThread::Thread()
 110 {
 111         ThreadStarted();
 112
 113         log_register_thread("EmergeThread");
 114
 115         DSTACK(__FUNCTION_NAME);
 116
 117         BEGIN_DEBUG_EXCEPTION_HANDLER
 118
 119         bool enable_mapgen_debug_info = g_settings->getBool("enable_mapgen_debug_info");
 120
 121         /*
 122                 Get block info from queue, emerge them and send them
 123                 to clients.
 124
 125                 After queue is empty, exit.
 126         */
 127         while(getRun())
 128         {
 129                 QueuedBlockEmerge *qptr = m_server->m_emerge_queue.pop();
 130                 if(qptr == NULL)
 131                         break;
 132
 133                 SharedPtr<QueuedBlockEmerge> q(qptr);
 134
 135                 v3s16 &p = q->pos;
 136                 v2s16 p2d(p.X,p.Z);
 137
 138                 /*
 139                         Do not generate over-limit
 140                 */
 141                 if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 142                 || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 143                 || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 144                 || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 145                 || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 146                 || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 147                         continue;
 148
 149                 //infostream<<"EmergeThread::Thread(): running"<<std::endl;
 150
 151                 //TimeTaker timer("block emerge");
 152
 153                 /*
 154                         Try to emerge it from somewhere.
 155
 156                         If it is only wanted as optional, only loading from disk
 157                         will be allowed.
 158                 */
 159
 160                 /*
 161                         Check if any peer wants it as non-optional. In that case it
 162                         will be generated.
 163
 164                         Also decrement the emerge queue count in clients.
 165                 */
 166
 167                 bool only_from_disk = true;
 168
 169                 {
 170                         core::map<u16, u8>::Iterator i;
 171                         for(i=q->peer_ids.getIterator(); i.atEnd()==false; i++)
 172                         {
 173                                 //u16 peer_id = i.getNode()->getKey();
 174
 175                                 // Check flags
 176                                 u8 flags = i.getNode()->getValue();
 177                                 if((flags & BLOCK_EMERGE_FLAG_FROMDISK) == false)
 178                                         only_from_disk = false;
 179
 180                         }
 181                 }
 182
 183                 if(enable_mapgen_debug_info)
 184                         infostream<<"EmergeThread: p="
 185                                         <<"("<<p.X<<","<<p.Y<<","<<p.Z<<") "
 186                                         <<"only_from_disk="<<only_from_disk<<std::endl;
 187
 188                 ServerMap &map = ((ServerMap&)m_server->m_env.getMap());
 189
 190                 //core::map<v3s16, MapBlock*> changed_blocks;
 191                 //core::map<v3s16, MapBlock*> lighting_invalidated_blocks;
 192
 193                 MapBlock *block = NULL;
 194                 bool got_block = true;
 195                 core::map<v3s16, MapBlock*> modified_blocks;
 196
 197                 /*
 198                         Fetch block from map or generate a single block
 199                 */
 200                 {
 201                         JMutexAutoLock envlock(m_server->m_env_mutex);
 202
 203                         // Load sector if it isn't loaded
 204                         if(map.getSectorNoGenerateNoEx(p2d) == NULL)
 205                                 //map.loadSectorFull(p2d);
 206                                 map.loadSectorMeta(p2d);
 207
 208                         block = map.getBlockNoCreateNoEx(p);
 209                         if(!block || block->isDummy() || !block->isGenerated())
 210                         {
 211                                 if(enable_mapgen_debug_info)
 212                                         infostream<<"EmergeThread: not in memory, loading"<<std::endl;
 213
 214                                 // Get, load or create sector
 215                                 /*ServerMapSector *sector =
 216                                                 (ServerMapSector*)map.createSector(p2d);*/
 217
 218                                 // Load/generate block
 219
 220                                 /*block = map.emergeBlock(p, sector, changed_blocks,
 221                                                 lighting_invalidated_blocks);*/
 222
 223                                 block = map.loadBlock(p);
 224
 225                                 if(only_from_disk == false)
 226                                 {
 227                                         if(block == NULL || block->isGenerated() == false)
 228                                         {
 229                                                 if(enable_mapgen_debug_info)
 230                                                         infostream<<"EmergeThread: generating"<<std::endl;
 231                                                 block = map.generateBlock(p, modified_blocks);
 232                                         }
 233                                 }
 234
 235                                 if(enable_mapgen_debug_info)
 236                                         infostream<<"EmergeThread: ended up with: "
 237                                                         <<analyze_block(block)<<std::endl;
 238
 239                                 if(block == NULL)
 240                                 {
 241                                         got_block = false;
 242                                 }
 243                                 else
 244                                 {
 245                                         /*
 246                                                 Ignore map edit events, they will not need to be
 247                                                 sent to anybody because the block hasn't been sent
 248                                                 to anybody
 249                                         */
 250                                         MapEditEventIgnorer ign(&m_server->m_ignore_map_edit_events);
 251
 252                                         // Activate objects and stuff
 253                                         m_server->m_env.activateBlock(block, 3600);
 254                                 }
 255                         }
 256                         else
 257                         {
 258                                 /*if(block->getLightingExpired()){
 259                                         lighting_invalidated_blocks[block->getPos()] = block;
 260                                 }*/
 261                         }
 262
 263                         // TODO: Some additional checking and lighting updating,
 264                         //       see emergeBlock
 265                 }
 266
 267                 {//envlock
 268                 JMutexAutoLock envlock(m_server->m_env_mutex);
 269
 270                 if(got_block)
 271                 {
 272                         /*
 273                                 Collect a list of blocks that have been modified in
 274                                 addition to the fetched one.
 275                         */
 276
 277 #if 0
 278                         if(lighting_invalidated_blocks.size() > 0)
 279                         {
 280                                 /*infostream<<"lighting "<<lighting_invalidated_blocks.size()
 281                                                 <<" blocks"<<std::endl;*/
 282
 283                                 // 50-100ms for single block generation
 284                                 //TimeTaker timer("** EmergeThread updateLighting");
 285
 286                                 // Update lighting without locking the environment mutex,
 287                                 // add modified blocks to changed blocks
 288                                 map.updateLighting(lighting_invalidated_blocks, modified_blocks);
 289                         }
 290
 291                         // Add all from changed_blocks to modified_blocks
 292                         for(core::map<v3s16, MapBlock*>::Iterator i = changed_blocks.getIterator();
 293                                         i.atEnd() == false; i++)
 294                         {
 295                                 MapBlock *block = i.getNode()->getValue();
 296                                 modified_blocks.insert(block->getPos(), block);
 297                         }
 298 #endif
 299                 }
 300                 // If we got no block, there should be no invalidated blocks
 301                 else
 302                 {
 303                         //assert(lighting_invalidated_blocks.size() == 0);
 304                 }
 305
 306                 }//envlock
 307
 308                 /*
 309                         Set sent status of modified blocks on clients
 310                 */
 311
 312                 // NOTE: Server's clients are also behind the connection mutex
 313                 JMutexAutoLock lock(m_server->m_con_mutex);
 314
 315                 /*
 316                         Add the originally fetched block to the modified list
 317                 */
 318                 if(got_block)
 319                 {
 320                         modified_blocks.insert(p, block);
 321                 }
 322
 323                 /*
 324                         Set the modified blocks unsent for all the clients
 325                 */
 326
 327                 for(core::map<u16, RemoteClient*>::Iterator
 328                                 i = m_server->m_clients.getIterator();
 329                                 i.atEnd() == false; i++)
 330                 {
 331                         RemoteClient *client = i.getNode()->getValue();
 332
 333                         if(modified_blocks.size() > 0)
 334                         {
 335                                 // Remove block from sent history
 336                                 client->SetBlocksNotSent(modified_blocks);
 337                         }
 338                 }
 339
 340         }
 341
 342         END_DEBUG_EXCEPTION_HANDLER(errorstream)
 343
 344         return NULL;
 345 }
 346
 347 void RemoteClient::GetNextBlocks(Server *server, float dtime,
 348                 core::array<PrioritySortedBlockTransfer> &dest)
 349 {
 350         DSTACK(__FUNCTION_NAME);
 351
 352         /*u32 timer_result;
 353         TimeTaker timer("RemoteClient::GetNextBlocks", &timer_result);*/
 354
 355         // Increment timers
 356         m_nothing_to_send_pause_timer -= dtime;
 357         m_nearest_unsent_reset_timer += dtime;
 358
 359         if(m_nothing_to_send_pause_timer >= 0)
 360         {
 361                 return;
 362         }
 363
 364         // Won't send anything if already sending
 365         if(m_blocks_sending.size() >= g_settings->getU16
 366                         ("max_simultaneous_block_sends_per_client"))
 367         {
 368                 //infostream<<"Not sending any blocks, Queue full."<<std::endl;
 369                 return;
 370         }
 371
 372         //TimeTaker timer("RemoteClient::GetNextBlocks");
 373
 374         Player *player = server->m_env.getPlayer(peer_id);
 375
 376         assert(player != NULL);
 377
 378         v3f playerpos = player->getPosition();
 379         v3f playerspeed = player->getSpeed();
 380         v3f playerspeeddir(0,0,0);
 381         if(playerspeed.getLength() > 1.0*BS)
 382                 playerspeeddir = playerspeed / playerspeed.getLength();
 383         // Predict to next block
 384         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
 385
 386         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
 387
 388         v3s16 center = getNodeBlockPos(center_nodepos);
 389
 390         // Camera position and direction
 391         v3f camera_pos = player->getEyePosition();
 392         v3f camera_dir = v3f(0,0,1);
 393         camera_dir.rotateYZBy(player->getPitch());
 394         camera_dir.rotateXZBy(player->getYaw());
 395
 396         /*infostream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 397                         <<camera_dir.Z<<")"<<std::endl;*/
 398
 399         /*
 400                 Get the starting value of the block finder radius.
 401         */
 402
 403         if(m_last_center != center)
 404         {
 405                 m_nearest_unsent_d = 0;
 406                 m_last_center = center;
 407         }
 408
 409         /*infostream<<"m_nearest_unsent_reset_timer="
 410                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 411
 412         // Reset periodically to workaround for some bugs or stuff
 413         if(m_nearest_unsent_reset_timer > 20.0)
 414         {
 415                 m_nearest_unsent_reset_timer = 0;
 416                 m_nearest_unsent_d = 0;
 417                 //infostream<<"Resetting m_nearest_unsent_d for "
 418                 //              <<server->getPlayerName(peer_id)<<std::endl;
 419         }
 420
 421         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 422         s16 d_start = m_nearest_unsent_d;
 423
 424         //infostream<<"d_start="<<d_start<<std::endl;
 425
 426         u16 max_simul_sends_setting = g_settings->getU16
 427                         ("max_simultaneous_block_sends_per_client");
 428         u16 max_simul_sends_usually = max_simul_sends_setting;
 429
 430         /*
 431                 Check the time from last addNode/removeNode.
 432
 433                 Decrease send rate if player is building stuff.
 434         */
 435         m_time_from_building += dtime;
 436         if(m_time_from_building < g_settings->getFloat(
 437                                 "full_block_send_enable_min_time_from_building"))
 438         {
 439                 max_simul_sends_usually
 440                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 441         }
 442
 443         /*
 444                 Number of blocks sending + number of blocks selected for sending
 445         */
 446         u32 num_blocks_selected = m_blocks_sending.size();
 447
 448         /*
 449                 next time d will be continued from the d from which the nearest
 450                 unsent block was found this time.
 451
 452                 This is because not necessarily any of the blocks found this
 453                 time are actually sent.
 454         */
 455         s32 new_nearest_unsent_d = -1;
 456
 457         s16 d_max = g_settings->getS16("max_block_send_distance");
 458         s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
 459
 460         // Don't loop very much at a time
 461         s16 max_d_increment_at_time = 2;
 462         if(d_max > d_start + max_d_increment_at_time)
 463                 d_max = d_start + max_d_increment_at_time;
 464         /*if(d_max_gen > d_start+2)
 465                 d_max_gen = d_start+2;*/
 466
 467         //infostream<<"Starting from "<<d_start<<std::endl;
 468
 469         s32 nearest_emerged_d = -1;
 470         s32 nearest_emergefull_d = -1;
 471         s32 nearest_sent_d = -1;
 472         bool queue_is_full = false;
 473
 474         s16 d;
 475         for(d = d_start; d <= d_max; d++)
 476         {
 477                 /*errorstream<<"checking d="<<d<<" for "
 478                                 <<server->getPlayerName(peer_id)<<std::endl;*/
 479                 //infostream<<"RemoteClient::SendBlocks(): d="<<d<<std::endl;
 480
 481                 /*
 482                         If m_nearest_unsent_d was changed by the EmergeThread
 483                         (it can change it to 0 through SetBlockNotSent),
 484                         update our d to it.
 485                         Else update m_nearest_unsent_d
 486                 */
 487                 /*if(m_nearest_unsent_d != last_nearest_unsent_d)
 488                 {
 489                         d = m_nearest_unsent_d;
 490                         last_nearest_unsent_d = m_nearest_unsent_d;
 491                 }*/
 492
 493                 /*
 494                         Get the border/face dot coordinates of a "d-radiused"
 495                         box
 496                 */
 497                 core::list<v3s16> list;
 498                 getFacePositions(list, d);
 499
 500                 core::list<v3s16>::Iterator li;
 501                 for(li=list.begin(); li!=list.end(); li++)
 502                 {
 503                         v3s16 p = *li + center;
 504
 505                         /*
 506                                 Send throttling
 507                                 - Don't allow too many simultaneous transfers
 508                                 - EXCEPT when the blocks are very close
 509
 510                                 Also, don't send blocks that are already flying.
 511                         */
 512
 513                         // Start with the usual maximum
 514                         u16 max_simul_dynamic = max_simul_sends_usually;
 515
 516                         // If block is very close, allow full maximum
 517                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 518                                 max_simul_dynamic = max_simul_sends_setting;
 519
 520                         // Don't select too many blocks for sending
 521                         if(num_blocks_selected >= max_simul_dynamic)
 522                         {
 523                                 queue_is_full = true;
 524                                 goto queue_full_break;
 525                         }
 526
 527                         // Don't send blocks that are currently being transferred
 528                         if(m_blocks_sending.find(p) != NULL)
 529                                 continue;
 530
 531                         /*
 532                                 Do not go over-limit
 533                         */
 534                         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 535                         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 536                         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 537                         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 538                         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 539                         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 540                                 continue;
 541
 542                         // If this is true, inexistent block will be made from scratch
 543                         bool generate = d <= d_max_gen;
 544
 545                         {
 546                                 /*// Limit the generating area vertically to 2/3
 547                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 548                                         generate = false;*/
 549
 550                                 // Limit the send area vertically to 1/2
 551                                 if(abs(p.Y - center.Y) > d_max / 2)
 552                                         continue;
 553                         }
 554
 555 #if 0
 556                         /*
 557                                 If block is far away, don't generate it unless it is
 558                                 near ground level.
 559                         */
 560                         if(d >= 4)
 561                         {
 562         #if 1
 563                                 // Block center y in nodes
 564                                 f32 y = (f32)(p.Y * MAP_BLOCKSIZE + MAP_BLOCKSIZE/2);
 565                                 // Don't generate if it's very high or very low
 566                                 if(y < -64 || y > 64)
 567                                         generate = false;
 568         #endif
 569         #if 0
 570                                 v2s16 p2d_nodes_center(
 571                                         MAP_BLOCKSIZE*p.X,
 572                                         MAP_BLOCKSIZE*p.Z);
 573
 574                                 // Get ground height in nodes
 575                                 s16 gh = server->m_env.getServerMap().findGroundLevel(
 576                                                 p2d_nodes_center);
 577
 578                                 // If differs a lot, don't generate
 579                                 if(fabs(gh - y) > MAP_BLOCKSIZE*2)
 580                                         generate = false;
 581                                         // Actually, don't even send it
 582                                         //continue;
 583         #endif
 584                         }
 585 #endif
 586
 587                         //infostream<<"d="<<d<<std::endl;
 588 #if 1
 589                         /*
 590                                 Don't generate or send if not in sight
 591                                 FIXME This only works if the client uses a small enough
 592                                 FOV setting. The default of 72 degrees is fine.
 593                         */
 594
 595                         float camera_fov = (72.0*PI/180) * 4./3.;
 596                         if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, 10000*BS) == false)
 597                         {
 598                                 continue;
 599                         }
 600 #endif
 601                         /*
 602                                 Don't send already sent blocks
 603                         */
 604                         {
 605                                 if(m_blocks_sent.find(p) != NULL)
 606                                 {
 607                                         continue;
 608                                 }
 609                         }
 610
 611                         /*
 612                                 Check if map has this block
 613                         */
 614                         MapBlock *block = server->m_env.getMap().getBlockNoCreateNoEx(p);
 615
 616                         bool surely_not_found_on_disk = false;
 617                         bool block_is_invalid = false;
 618                         if(block != NULL)
 619                         {
 620                                 // Reset usage timer, this block will be of use in the future.
 621                                 block->resetUsageTimer();
 622
 623                                 // Block is dummy if data doesn't exist.
 624                                 // It means it has been not found from disk and not generated
 625                                 if(block->isDummy())
 626                                 {
 627                                         surely_not_found_on_disk = true;
 628                                 }
 629
 630                                 // Block is valid if lighting is up-to-date and data exists
 631                                 if(block->isValid() == false)
 632                                 {
 633                                         block_is_invalid = true;
 634                                 }
 635
 636                                 /*if(block->isFullyGenerated() == false)
 637                                 {
 638                                         block_is_invalid = true;
 639                                 }*/
 640
 641 #if 0
 642                                 v2s16 p2d(p.X, p.Z);
 643                                 ServerMap *map = (ServerMap*)(&server->m_env.getMap());
 644                                 v2s16 chunkpos = map->sector_to_chunk(p2d);
 645                                 if(map->chunkNonVolatile(chunkpos) == false)
 646                                         block_is_invalid = true;
 647 #endif
 648                                 if(block->isGenerated() == false)
 649                                         block_is_invalid = true;
 650 #if 1
 651                                 /*
 652                                         If block is not close, don't send it unless it is near
 653                                         ground level.
 654
 655                                         Block is near ground level if night-time mesh
 656                                         differs from day-time mesh.
 657                                 */
 658                                 if(d >= 4)
 659                                 {
 660                                         if(block->dayNightDiffed() == false)
 661                                                 continue;
 662                                 }
 663 #endif
 664                         }
 665
 666                         /*
 667                                 If block has been marked to not exist on disk (dummy)
 668                                 and generating new ones is not wanted, skip block.
 669                         */
 670                         if(generate == false && surely_not_found_on_disk == true)
 671                         {
 672                                 // get next one.
 673                                 continue;
 674                         }
 675
 676                         /*
 677                                 Add inexistent block to emerge queue.
 678                         */
 679                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 680                         {
 681                                 //TODO: Get value from somewhere
 682                                 // Allow only one block in emerge queue
 683                                 //if(server->m_emerge_queue.peerItemCount(peer_id) < 1)
 684                                 // Allow two blocks in queue per client
 685                                 //if(server->m_emerge_queue.peerItemCount(peer_id) < 2)
 686                                 if(server->m_emerge_queue.peerItemCount(peer_id) < 25)
 687                                 {
 688                                         //infostream<<"Adding block to emerge queue"<<std::endl;
 689
 690                                         // Add it to the emerge queue and trigger the thread
 691
 692                                         u8 flags = 0;
 693                                         if(generate == false)
 694                                                 flags |= BLOCK_EMERGE_FLAG_FROMDISK;
 695
 696                                         server->m_emerge_queue.addBlock(peer_id, p, flags);
 697                                         server->m_emergethread.trigger();
 698
 699                                         if(nearest_emerged_d == -1)
 700                                                 nearest_emerged_d = d;
 701                                 } else {
 702                                         if(nearest_emergefull_d == -1)
 703                                                 nearest_emergefull_d = d;
 704                                 }
 705
 706                                 // get next one.
 707                                 continue;
 708                         }
 709
 710                         if(nearest_sent_d == -1)
 711                                 nearest_sent_d = d;
 712
 713                         /*
 714                                 Add block to send queue
 715                         */
 716
 717                         /*errorstream<<"sending from d="<<d<<" to "
 718                                         <<server->getPlayerName(peer_id)<<std::endl;*/
 719
 720                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 721
 722                         dest.push_back(q);
 723
 724                         num_blocks_selected += 1;
 725                 }
 726         }
 727 queue_full_break:
 728
 729         //infostream<<"Stopped at "<<d<<std::endl;
 730
 731         // If nothing was found for sending and nothing was queued for
 732         // emerging, continue next time browsing from here
 733         if(nearest_emerged_d != -1){
 734                 new_nearest_unsent_d = nearest_emerged_d;
 735         } else if(nearest_emergefull_d != -1){
 736                 new_nearest_unsent_d = nearest_emergefull_d;
 737         } else {
 738                 if(d > g_settings->getS16("max_block_send_distance")){
 739                         new_nearest_unsent_d = 0;
 740                         m_nothing_to_send_pause_timer = 2.0;
 741                         /*infostream<<"GetNextBlocks(): d wrapped around for "
 742                                         <<server->getPlayerName(peer_id)
 743                                         <<"; setting to 0 and pausing"<<std::endl;*/
 744                 } else {
 745                         if(nearest_sent_d != -1)
 746                                 new_nearest_unsent_d = nearest_sent_d;
 747                         else
 748                                 new_nearest_unsent_d = d;
 749                 }
 750         }
 751
 752         if(new_nearest_unsent_d != -1)
 753                 m_nearest_unsent_d = new_nearest_unsent_d;
 754
 755         /*timer_result = timer.stop(true);
 756         if(timer_result != 0)
 757                 infostream<<"GetNextBlocks duration: "<<timer_result<<" (!=0)"<<std::endl;*/
 758 }
 759
 760 void RemoteClient::SendObjectData(
 761                 Server *server,
 762                 float dtime,
 763                 core::map<v3s16, bool> &stepped_blocks
 764         )
 765 {
 766         DSTACK(__FUNCTION_NAME);
 767
 768         // Can't send anything without knowing version
 769         if(serialization_version == SER_FMT_VER_INVALID)
 770         {
 771                 infostream<<"RemoteClient::SendObjectData(): Not sending, no version."
 772                                 <<std::endl;
 773                 return;
 774         }
 775
 776         /*
 777                 Send a TOCLIENT_OBJECTDATA packet.
 778                 Sent as unreliable.
 779
 780                 u16 command
 781                 u16 number of player positions
 782                 for each player:
 783                         u16 peer_id
 784                         v3s32 position*100
 785                         v3s32 speed*100
 786                         s32 pitch*100
 787                         s32 yaw*100
 788                 u16 count of blocks
 789                 for each block:
 790                         block objects
 791         */
 792
 793         std::ostringstream os(std::ios_base::binary);
 794         u8 buf[12];
 795
 796         // Write command
 797         writeU16(buf, TOCLIENT_OBJECTDATA);
 798         os.write((char*)buf, 2);
 799
 800         /*
 801                 Get and write player data
 802         */
 803
 804         // Get connected players
 805         core::list<Player*> players = server->m_env.getPlayers(true);
 806
 807         // Write player count
 808         u16 playercount = players.size();
 809         writeU16(buf, playercount);
 810         os.write((char*)buf, 2);
 811
 812         core::list<Player*>::Iterator i;
 813         for(i = players.begin();
 814                         i != players.end(); i++)
 815         {
 816                 Player *player = *i;
 817
 818                 v3f pf = player->getPosition();
 819                 v3f sf = player->getSpeed();
 820
 821                 v3s32 position_i(pf.X*100, pf.Y*100, pf.Z*100);
 822                 v3s32 speed_i   (sf.X*100, sf.Y*100, sf.Z*100);
 823                 s32   pitch_i   (player->getPitch() * 100);
 824                 s32   yaw_i     (player->getYaw() * 100);
 825
 826                 writeU16(buf, player->peer_id);
 827                 os.write((char*)buf, 2);
 828                 writeV3S32(buf, position_i);
 829                 os.write((char*)buf, 12);
 830                 writeV3S32(buf, speed_i);
 831                 os.write((char*)buf, 12);
 832                 writeS32(buf, pitch_i);
 833                 os.write((char*)buf, 4);
 834                 writeS32(buf, yaw_i);
 835                 os.write((char*)buf, 4);
 836         }
 837
 838         /*
 839                 Get and write object data (dummy, for compatibility)
 840         */
 841
 842         // Write block count
 843         writeU16(buf, 0);
 844         os.write((char*)buf, 2);
 845
 846         /*
 847                 Send data
 848         */
 849
 850         //infostream<<"Server: Sending object data to "<<peer_id<<std::endl;
 851
 852         // Make data buffer
 853         std::string s = os.str();
 854         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
 855         // Send as unreliable
 856         server->m_con.Send(peer_id, 0, data, false);
 857 }
 858
 859 void RemoteClient::GotBlock(v3s16 p)
 860 {
 861         if(m_blocks_sending.find(p) != NULL)
 862                 m_blocks_sending.remove(p);
 863         else
 864         {
 865                 /*infostream<<"RemoteClient::GotBlock(): Didn't find in"
 866                                 " m_blocks_sending"<<std::endl;*/
 867                 m_excess_gotblocks++;
 868         }
 869         m_blocks_sent.insert(p, true);
 870 }
 871
 872 void RemoteClient::SentBlock(v3s16 p)
 873 {
 874         if(m_blocks_sending.find(p) == NULL)
 875                 m_blocks_sending.insert(p, 0.0);
 876         else
 877                 infostream<<"RemoteClient::SentBlock(): Sent block"
 878                                 " already in m_blocks_sending"<<std::endl;
 879 }
 880
 881 void RemoteClient::SetBlockNotSent(v3s16 p)
 882 {
 883         m_nearest_unsent_d = 0;
 884
 885         if(m_blocks_sending.find(p) != NULL)
 886                 m_blocks_sending.remove(p);
 887         if(m_blocks_sent.find(p) != NULL)
 888                 m_blocks_sent.remove(p);
 889 }
 890
 891 void RemoteClient::SetBlocksNotSent(core::map<v3s16, MapBlock*> &blocks)
 892 {
 893         m_nearest_unsent_d = 0;
 894
 895         for(core::map<v3s16, MapBlock*>::Iterator
 896                         i = blocks.getIterator();
 897                         i.atEnd()==false; i++)
 898         {
 899                 v3s16 p = i.getNode()->getKey();
 900
 901                 if(m_blocks_sending.find(p) != NULL)
 902                         m_blocks_sending.remove(p);
 903                 if(m_blocks_sent.find(p) != NULL)
 904                         m_blocks_sent.remove(p);
 905         }
 906 }
 907
 908 /*
 909         PlayerInfo
 910 */
 911
 912 PlayerInfo::PlayerInfo()
 913 {
 914         name[0] = 0;
 915         avg_rtt = 0;
 916 }
 917
 918 void PlayerInfo::PrintLine(std::ostream *s)
 919 {
 920         (*s)<<id<<": ";
 921         (*s)<<"\""<<name<<"\" ("
 922                         <<(position.X/10)<<","<<(position.Y/10)
 923                         <<","<<(position.Z/10)<<") ";
 924         address.print(s);
 925         (*s)<<" avg_rtt="<<avg_rtt;
 926         (*s)<<std::endl;
 927 }
 928
 929 u32 PIChecksum(core::list<PlayerInfo> &l)
 930 {
 931         core::list<PlayerInfo>::Iterator i;
 932         u32 checksum = 1;
 933         u32 a = 10;
 934         for(i=l.begin(); i!=l.end(); i++)
 935         {
 936                 checksum += a * (i->id+1);
 937                 checksum ^= 0x435aafcd;
 938                 a *= 10;
 939         }
 940         return checksum;
 941 }
 942
 943 /*
 944         Server
 945 */
 946
 947 Server::Server(
 948                 std::string mapsavedir,
 949                 std::string configpath
 950         ):
 951         m_env(new ServerMap(mapsavedir), this),
 952         m_con(PROTOCOL_ID, 512, CONNECTION_TIMEOUT, this),
 953         m_authmanager(mapsavedir+"/auth.txt"),
 954         m_banmanager(mapsavedir+"/ipban.txt"),
 955         m_thread(this),
 956         m_emergethread(this),
 957         m_time_counter(0),
 958         m_time_of_day_send_timer(0),
 959         m_uptime(0),
 960         m_mapsavedir(mapsavedir),
 961         m_configpath(configpath),
 962         m_shutdown_requested(false),
 963         m_ignore_map_edit_events(false),
 964         m_ignore_map_edit_events_peer_id(0)
 965 {
 966         m_liquid_transform_timer = 0.0;
 967         m_print_info_timer = 0.0;
 968         m_objectdata_timer = 0.0;
 969         m_emergethread_trigger_timer = 0.0;
 970         m_savemap_timer = 0.0;
 971
 972         m_env_mutex.Init();
 973         m_con_mutex.Init();
 974         m_step_dtime_mutex.Init();
 975         m_step_dtime = 0.0;
 976
 977         // Register us to receive map edit events
 978         m_env.getMap().addEventReceiver(this);
 979
 980         // If file exists, load environment metadata
 981         if(fs::PathExists(m_mapsavedir+"/env_meta.txt"))
 982         {
 983                 infostream<<"Server: Loading environment metadata"<<std::endl;
 984                 m_env.loadMeta(m_mapsavedir);
 985         }
 986
 987         // Load players
 988         infostream<<"Server: Loading players"<<std::endl;
 989         m_env.deSerializePlayers(m_mapsavedir);
 990 }
 991
 992 Server::~Server()
 993 {
 994         infostream<<"Server::~Server()"<<std::endl;
 995
 996         /*
 997                 Send shutdown message
 998         */
 999         {
1000                 JMutexAutoLock conlock(m_con_mutex);
1001
1002                 std::wstring line = L"*** Server shutting down";
1003
1004                 /*
1005                         Send the message to clients
1006                 */
1007                 for(core::map<u16, RemoteClient*>::Iterator
1008                         i = m_clients.getIterator();
1009                         i.atEnd() == false; i++)
1010                 {
1011                         // Get client and check that it is valid
1012                         RemoteClient *client = i.getNode()->getValue();
1013                         assert(client->peer_id == i.getNode()->getKey());
1014                         if(client->serialization_version == SER_FMT_VER_INVALID)
1015                                 continue;
1016
1017                         try{
1018                                 SendChatMessage(client->peer_id, line);
1019                         }
1020                         catch(con::PeerNotFoundException &e)
1021                         {}
1022                 }
1023         }
1024
1025         {
1026                 JMutexAutoLock envlock(m_env_mutex);
1027
1028                 /*
1029                         Save players
1030                 */
1031                 infostream<<"Server: Saving players"<<std::endl;
1032                 m_env.serializePlayers(m_mapsavedir);
1033
1034                 /*
1035                         Save environment metadata
1036                 */
1037                 infostream<<"Server: Saving environment metadata"<<std::endl;
1038                 m_env.saveMeta(m_mapsavedir);
1039         }
1040
1041         /*
1042                 Stop threads
1043         */
1044         stop();
1045
1046         /*
1047                 Delete clients
1048         */
1049         {
1050                 JMutexAutoLock clientslock(m_con_mutex);
1051
1052                 for(core::map<u16, RemoteClient*>::Iterator
1053                         i = m_clients.getIterator();
1054                         i.atEnd() == false; i++)
1055                 {
1056                         /*// Delete player
1057                         // NOTE: These are removed by env destructor
1058                         {
1059                                 u16 peer_id = i.getNode()->getKey();
1060                                 JMutexAutoLock envlock(m_env_mutex);
1061                                 m_env.removePlayer(peer_id);
1062                         }*/
1063
1064                         // Delete client
1065                         delete i.getNode()->getValue();
1066                 }
1067         }
1068 }
1069
1070 void Server::start(unsigned short port)
1071 {
1072         DSTACK(__FUNCTION_NAME);
1073         // Stop thread if already running
1074         m_thread.stop();
1075
1076         // Initialize connection
1077         m_con.setTimeoutMs(30);
1078         m_con.Serve(port);
1079
1080         // Start thread
1081         m_thread.setRun(true);
1082         m_thread.Start();
1083
1084         infostream<<"Server: Started on port "<<port<<std::endl;
1085 }
1086
1087 void Server::stop()
1088 {
1089         DSTACK(__FUNCTION_NAME);
1090
1091         infostream<<"Server: Stopping and waiting threads"<<std::endl;
1092
1093         // Stop threads (set run=false first so both start stopping)
1094         m_thread.setRun(false);
1095         m_emergethread.setRun(false);
1096         m_thread.stop();
1097         m_emergethread.stop();
1098
1099         infostream<<"Server: Threads stopped"<<std::endl;
1100 }
1101
1102 void Server::step(float dtime)
1103 {
1104         DSTACK(__FUNCTION_NAME);
1105         // Limit a bit
1106         if(dtime > 2.0)
1107                 dtime = 2.0;
1108         {
1109                 JMutexAutoLock lock(m_step_dtime_mutex);
1110                 m_step_dtime += dtime;
1111         }
1112 }
1113
1114 void Server::AsyncRunStep()
1115 {
1116         DSTACK(__FUNCTION_NAME);
1117
1118         g_profiler->add("Server::AsyncRunStep (num)", 1);
1119
1120         float dtime;
1121         {
1122                 JMutexAutoLock lock1(m_step_dtime_mutex);
1123                 dtime = m_step_dtime;
1124         }
1125
1126         {
1127                 ScopeProfiler sp(g_profiler, "Server: sel and send blocks to clients");
1128                 // Send blocks to clients
1129                 SendBlocks(dtime);
1130         }
1131
1132         if(dtime < 0.001)
1133                 return;
1134
1135         g_profiler->add("Server::AsyncRunStep with dtime (num)", 1);
1136
1137         //infostream<<"Server steps "<<dtime<<std::endl;
1138         //infostream<<"Server::AsyncRunStep(): dtime="<<dtime<<std::endl;
1139
1140         {
1141                 JMutexAutoLock lock1(m_step_dtime_mutex);
1142                 m_step_dtime -= dtime;
1143         }
1144
1145         /*
1146                 Update uptime
1147         */
1148         {
1149                 m_uptime.set(m_uptime.get() + dtime);
1150         }
1151
1152         {
1153                 // Process connection's timeouts
1154                 JMutexAutoLock lock2(m_con_mutex);
1155                 ScopeProfiler sp(g_profiler, "Server: connection timeout processing");
1156                 m_con.RunTimeouts(dtime);
1157         }
1158
1159         {
1160                 // This has to be called so that the client list gets synced
1161                 // with the peer list of the connection
1162                 handlePeerChanges();
1163         }
1164
1165         /*
1166                 Update m_time_of_day and overall game time
1167         */
1168         {
1169                 JMutexAutoLock envlock(m_env_mutex);
1170
1171                 m_time_counter += dtime;
1172                 f32 speed = g_settings->getFloat("time_speed") * 24000./(24.*3600);
1173                 u32 units = (u32)(m_time_counter*speed);
1174                 m_time_counter -= (f32)units / speed;
1175
1176                 m_env.setTimeOfDay((m_env.getTimeOfDay() + units) % 24000);
1177
1178                 //infostream<<"Server: m_time_of_day = "<<m_time_of_day.get()<<std::endl;
1179
1180                 /*
1181                         Send to clients at constant intervals
1182                 */
1183
1184                 m_time_of_day_send_timer -= dtime;
1185                 if(m_time_of_day_send_timer < 0.0)
1186                 {
1187                         m_time_of_day_send_timer = g_settings->getFloat("time_send_interval");
1188
1189                         //JMutexAutoLock envlock(m_env_mutex);
1190                         JMutexAutoLock conlock(m_con_mutex);
1191
1192                         for(core::map<u16, RemoteClient*>::Iterator
1193                                 i = m_clients.getIterator();
1194                                 i.atEnd() == false; i++)
1195                         {
1196                                 RemoteClient *client = i.getNode()->getValue();
1197                                 //Player *player = m_env.getPlayer(client->peer_id);
1198
1199                                 SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
1200                                                 m_env.getTimeOfDay());
1201                                 // Send as reliable
1202                                 m_con.Send(client->peer_id, 0, data, true);
1203                         }
1204                 }
1205         }
1206
1207         {
1208                 JMutexAutoLock lock(m_env_mutex);
1209                 // Step environment
1210                 ScopeProfiler sp(g_profiler, "SEnv step");
1211                 ScopeProfiler sp2(g_profiler, "SEnv step avg", SPT_AVG);
1212                 m_env.step(dtime);
1213         }
1214
1215         const float map_timer_and_unload_dtime = 5.15;
1216         if(m_map_timer_and_unload_interval.step(dtime, map_timer_and_unload_dtime))
1217         {
1218                 JMutexAutoLock lock(m_env_mutex);
1219                 // Run Map's timers and unload unused data
1220                 ScopeProfiler sp(g_profiler, "Server: map timer and unload");
1221                 m_env.getMap().timerUpdate(map_timer_and_unload_dtime,
1222                                 g_settings->getFloat("server_unload_unused_data_timeout"));
1223         }
1224
1225         /*
1226                 Do background stuff
1227         */
1228
1229         /*
1230                 Transform liquids
1231         */
1232         m_liquid_transform_timer += dtime;
1233         if(m_liquid_transform_timer >= 1.00)
1234         {
1235                 m_liquid_transform_timer -= 1.00;
1236
1237                 JMutexAutoLock lock(m_env_mutex);
1238
1239                 ScopeProfiler sp(g_profiler, "Server: liquid transform");
1240
1241                 core::map<v3s16, MapBlock*> modified_blocks;
1242                 m_env.getMap().transformLiquids(modified_blocks);
1243 #if 0
1244                 /*
1245                         Update lighting
1246                 */
1247                 core::map<v3s16, MapBlock*> lighting_modified_blocks;
1248                 ServerMap &map = ((ServerMap&)m_env.getMap());
1249                 map.updateLighting(modified_blocks, lighting_modified_blocks);
1250
1251                 // Add blocks modified by lighting to modified_blocks
1252                 for(core::map<v3s16, MapBlock*>::Iterator
1253                                 i = lighting_modified_blocks.getIterator();
1254                                 i.atEnd() == false; i++)
1255                 {
1256                         MapBlock *block = i.getNode()->getValue();
1257                         modified_blocks.insert(block->getPos(), block);
1258                 }
1259 #endif
1260                 /*
1261                         Set the modified blocks unsent for all the clients
1262                 */
1263
1264                 JMutexAutoLock lock2(m_con_mutex);
1265
1266                 for(core::map<u16, RemoteClient*>::Iterator
1267                                 i = m_clients.getIterator();
1268                                 i.atEnd() == false; i++)
1269                 {
1270                         RemoteClient *client = i.getNode()->getValue();
1271
1272                         if(modified_blocks.size() > 0)
1273                         {
1274                                 // Remove block from sent history
1275                                 client->SetBlocksNotSent(modified_blocks);
1276                         }
1277                 }
1278         }
1279
1280         // Periodically print some info
1281         {
1282                 float &counter = m_print_info_timer;
1283                 counter += dtime;
1284                 if(counter >= 30.0)
1285                 {
1286                         counter = 0.0;
1287
1288                         JMutexAutoLock lock2(m_con_mutex);
1289
1290                         if(m_clients.size() != 0)
1291                                 infostream<<"Players:"<<std::endl;
1292                         for(core::map<u16, RemoteClient*>::Iterator
1293                                 i = m_clients.getIterator();
1294                                 i.atEnd() == false; i++)
1295                         {
1296                                 //u16 peer_id = i.getNode()->getKey();
1297                                 RemoteClient *client = i.getNode()->getValue();
1298                                 Player *player = m_env.getPlayer(client->peer_id);
1299                                 if(player==NULL)
1300                                         continue;
1301                                 infostream<<"* "<<player->getName()<<"\t";
1302                                 client->PrintInfo(infostream);
1303                         }
1304                 }
1305         }
1306
1307         //if(g_settings->getBool("enable_experimental"))
1308         {
1309
1310         /*
1311                 Check added and deleted active objects
1312         */
1313         {
1314                 //infostream<<"Server: Checking added and deleted active objects"<<std::endl;
1315                 JMutexAutoLock envlock(m_env_mutex);
1316                 JMutexAutoLock conlock(m_con_mutex);
1317
1318                 ScopeProfiler sp(g_profiler, "Server: checking added and deleted objs");
1319
1320                 // Radius inside which objects are active
1321                 s16 radius = g_settings->getS16("active_object_send_range_blocks");
1322                 radius *= MAP_BLOCKSIZE;
1323
1324                 for(core::map<u16, RemoteClient*>::Iterator
1325                         i = m_clients.getIterator();
1326                         i.atEnd() == false; i++)
1327                 {
1328                         RemoteClient *client = i.getNode()->getValue();
1329                         Player *player = m_env.getPlayer(client->peer_id);
1330                         if(player==NULL)
1331                         {
1332                                 // This can happen if the client timeouts somehow
1333                                 /*infostream<<"WARNING: "<<__FUNCTION_NAME<<": Client "
1334                                                 <<client->peer_id
1335                                                 <<" has no associated player"<<std::endl;*/
1336                                 continue;
1337                         }
1338                         v3s16 pos = floatToInt(player->getPosition(), BS);
1339
1340                         core::map<u16, bool> removed_objects;
1341                         core::map<u16, bool> added_objects;
1342                         m_env.getRemovedActiveObjects(pos, radius,
1343                                         client->m_known_objects, removed_objects);
1344                         m_env.getAddedActiveObjects(pos, radius,
1345                                         client->m_known_objects, added_objects);
1346
1347                         // Ignore if nothing happened
1348                         if(removed_objects.size() == 0 && added_objects.size() == 0)
1349                         {
1350                                 //infostream<<"active objects: none changed"<<std::endl;
1351                                 continue;
1352                         }
1353
1354                         std::string data_buffer;
1355
1356                         char buf[4];
1357
1358                         // Handle removed objects
1359                         writeU16((u8*)buf, removed_objects.size());
1360                         data_buffer.append(buf, 2);
1361                         for(core::map<u16, bool>::Iterator
1362                                         i = removed_objects.getIterator();
1363                                         i.atEnd()==false; i++)
1364                         {
1365                                 // Get object
1366                                 u16 id = i.getNode()->getKey();
1367                                 ServerActiveObject* obj = m_env.getActiveObject(id);
1368
1369                                 // Add to data buffer for sending
1370                                 writeU16((u8*)buf, i.getNode()->getKey());
1371                                 data_buffer.append(buf, 2);
1372
1373                                 // Remove from known objects
1374                                 client->m_known_objects.remove(i.getNode()->getKey());
1375
1376                                 if(obj && obj->m_known_by_count > 0)
1377                                         obj->m_known_by_count--;
1378                         }
1379
1380                         // Handle added objects
1381                         writeU16((u8*)buf, added_objects.size());
1382                         data_buffer.append(buf, 2);
1383                         for(core::map<u16, bool>::Iterator
1384                                         i = added_objects.getIterator();
1385                                         i.atEnd()==false; i++)
1386                         {
1387                                 // Get object
1388                                 u16 id = i.getNode()->getKey();
1389                                 ServerActiveObject* obj = m_env.getActiveObject(id);
1390
1391                                 // Get object type
1392                                 u8 type = ACTIVEOBJECT_TYPE_INVALID;
1393                                 if(obj == NULL)
1394                                         infostream<<"WARNING: "<<__FUNCTION_NAME
1395                                                         <<": NULL object"<<std::endl;
1396                                 else
1397                                         type = obj->getType();
1398
1399                                 // Add to data buffer for sending
1400                                 writeU16((u8*)buf, id);
1401                                 data_buffer.append(buf, 2);
1402                                 writeU8((u8*)buf, type);
1403                                 data_buffer.append(buf, 1);
1404
1405                                 if(obj)
1406                                         data_buffer.append(serializeLongString(
1407                                                         obj->getClientInitializationData()));
1408                                 else
1409                                         data_buffer.append(serializeLongString(""));
1410
1411                                 // Add to known objects
1412                                 client->m_known_objects.insert(i.getNode()->getKey(), false);
1413
1414                                 if(obj)
1415                                         obj->m_known_by_count++;
1416                         }
1417
1418                         // Send packet
1419                         SharedBuffer<u8> reply(2 + data_buffer.size());
1420                         writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_REMOVE_ADD);
1421                         memcpy((char*)&reply[2], data_buffer.c_str(),
1422                                         data_buffer.size());
1423                         // Send as reliable
1424                         m_con.Send(client->peer_id, 0, reply, true);
1425
1426                         infostream<<"Server: Sent object remove/add: "
1427                                         <<removed_objects.size()<<" removed, "
1428                                         <<added_objects.size()<<" added, "
1429                                         <<"packet size is "<<reply.getSize()<<std::endl;
1430                 }
1431
1432 #if 0
1433                 /*
1434                         Collect a list of all the objects known by the clients
1435                         and report it back to the environment.
1436                 */
1437
1438                 core::map<u16, bool> all_known_objects;
1439
1440                 for(core::map<u16, RemoteClient*>::Iterator
1441                         i = m_clients.getIterator();
1442                         i.atEnd() == false; i++)
1443                 {
1444                         RemoteClient *client = i.getNode()->getValue();
1445                         // Go through all known objects of client
1446                         for(core::map<u16, bool>::Iterator
1447                                         i = client->m_known_objects.getIterator();
1448                                         i.atEnd()==false; i++)
1449                         {
1450                                 u16 id = i.getNode()->getKey();
1451                                 all_known_objects[id] = true;
1452                         }
1453                 }
1454
1455                 m_env.setKnownActiveObjects(whatever);
1456 #endif
1457
1458         }
1459
1460         /*
1461                 Send object messages
1462         */
1463         {
1464                 JMutexAutoLock envlock(m_env_mutex);
1465                 JMutexAutoLock conlock(m_con_mutex);
1466
1467                 //ScopeProfiler sp(g_profiler, "Server: sending object messages");
1468
1469                 // Key = object id
1470                 // Value = data sent by object
1471                 core::map<u16, core::list<ActiveObjectMessage>* > buffered_messages;
1472
1473                 // Get active object messages from environment
1474                 for(;;)
1475                 {
1476                         ActiveObjectMessage aom = m_env.getActiveObjectMessage();
1477                         if(aom.id == 0)
1478                                 break;
1479
1480                         core::list<ActiveObjectMessage>* message_list = NULL;
1481                         core::map<u16, core::list<ActiveObjectMessage>* >::Node *n;
1482                         n = buffered_messages.find(aom.id);
1483                         if(n == NULL)
1484                         {
1485                                 message_list = new core::list<ActiveObjectMessage>;
1486                                 buffered_messages.insert(aom.id, message_list);
1487                         }
1488                         else
1489                         {
1490                                 message_list = n->getValue();
1491                         }
1492                         message_list->push_back(aom);
1493                 }
1494
1495                 // Route data to every client
1496                 for(core::map<u16, RemoteClient*>::Iterator
1497                         i = m_clients.getIterator();
1498                         i.atEnd()==false; i++)
1499                 {
1500                         RemoteClient *client = i.getNode()->getValue();
1501                         std::string reliable_data;
1502                         std::string unreliable_data;
1503                         // Go through all objects in message buffer
1504                         for(core::map<u16, core::list<ActiveObjectMessage>* >::Iterator
1505                                         j = buffered_messages.getIterator();
1506                                         j.atEnd()==false; j++)
1507                         {
1508                                 // If object is not known by client, skip it
1509                                 u16 id = j.getNode()->getKey();
1510                                 if(client->m_known_objects.find(id) == NULL)
1511                                         continue;
1512                                 // Get message list of object
1513                                 core::list<ActiveObjectMessage>* list = j.getNode()->getValue();
1514                                 // Go through every message
1515                                 for(core::list<ActiveObjectMessage>::Iterator
1516                                                 k = list->begin(); k != list->end(); k++)
1517                                 {
1518                                         // Compose the full new data with header
1519                                         ActiveObjectMessage aom = *k;
1520                                         std::string new_data;
1521                                         // Add object id
1522                                         char buf[2];
1523                                         writeU16((u8*)&buf[0], aom.id);
1524                                         new_data.append(buf, 2);
1525                                         // Add data
1526                                         new_data += serializeString(aom.datastring);
1527                                         // Add data to buffer
1528                                         if(aom.reliable)
1529                                                 reliable_data += new_data;
1530                                         else
1531                                                 unreliable_data += new_data;
1532                                 }
1533                         }
1534                         /*
1535                                 reliable_data and unreliable_data are now ready.
1536                                 Send them.
1537                         */
1538                         if(reliable_data.size() > 0)
1539                         {
1540                                 SharedBuffer<u8> reply(2 + reliable_data.size());
1541                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
1542                                 memcpy((char*)&reply[2], reliable_data.c_str(),
1543                                                 reliable_data.size());
1544                                 // Send as reliable
1545                                 m_con.Send(client->peer_id, 0, reply, true);
1546                         }
1547                         if(unreliable_data.size() > 0)
1548                         {
1549                                 SharedBuffer<u8> reply(2 + unreliable_data.size());
1550                                 writeU16(&reply[0], TOCLIENT_ACTIVE_OBJECT_MESSAGES);
1551                                 memcpy((char*)&reply[2], unreliable_data.c_str(),
1552                                                 unreliable_data.size());
1553                                 // Send as unreliable
1554                                 m_con.Send(client->peer_id, 0, reply, false);
1555                         }
1556
1557                         /*if(reliable_data.size() > 0 || unreliable_data.size() > 0)
1558                         {
1559                                 infostream<<"Server: Size of object message data: "
1560                                                 <<"reliable: "<<reliable_data.size()
1561                                                 <<", unreliable: "<<unreliable_data.size()
1562                                                 <<std::endl;
1563                         }*/
1564                 }
1565
1566                 // Clear buffered_messages
1567                 for(core::map<u16, core::list<ActiveObjectMessage>* >::Iterator
1568                                 i = buffered_messages.getIterator();
1569                                 i.atEnd()==false; i++)
1570                 {
1571                         delete i.getNode()->getValue();
1572                 }
1573         }
1574
1575         } // enable_experimental
1576
1577         /*
1578                 Send queued-for-sending map edit events.
1579         */
1580         {
1581                 // Don't send too many at a time
1582                 //u32 count = 0;
1583
1584                 // Single change sending is disabled if queue size is not small
1585                 bool disable_single_change_sending = false;
1586                 if(m_unsent_map_edit_queue.size() >= 4)
1587                         disable_single_change_sending = true;
1588
1589                 bool got_any_events = false;
1590
1591                 // We'll log the amount of each
1592                 Profiler prof;
1593
1594                 while(m_unsent_map_edit_queue.size() != 0)
1595                 {
1596                         got_any_events = true;
1597
1598                         MapEditEvent* event = m_unsent_map_edit_queue.pop_front();
1599
1600                         // Players far away from the change are stored here.
1601                         // Instead of sending the changes, MapBlocks are set not sent
1602                         // for them.
1603                         core::list<u16> far_players;
1604
1605                         if(event->type == MEET_ADDNODE)
1606                         {
1607                                 //infostream<<"Server: MEET_ADDNODE"<<std::endl;
1608                                 prof.add("MEET_ADDNODE", 1);
1609                                 if(disable_single_change_sending)
1610                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1611                                                         &far_players, 5);
1612                                 else
1613                                         sendAddNode(event->p, event->n, event->already_known_by_peer,
1614                                                         &far_players, 30);
1615                         }
1616                         else if(event->type == MEET_REMOVENODE)
1617                         {
1618                                 //infostream<<"Server: MEET_REMOVENODE"<<std::endl;
1619                                 prof.add("MEET_REMOVENODE", 1);
1620                                 if(disable_single_change_sending)
1621                                         sendRemoveNode(event->p, event->already_known_by_peer,
1622                                                         &far_players, 5);
1623                                 else
1624                                         sendRemoveNode(event->p, event->already_known_by_peer,
1625                                                         &far_players, 30);
1626                         }
1627                         else if(event->type == MEET_BLOCK_NODE_METADATA_CHANGED)
1628                         {
1629                                 infostream<<"Server: MEET_BLOCK_NODE_METADATA_CHANGED"<<std::endl;
1630                                 prof.add("MEET_BLOCK_NODE_METADATA_CHANGED", 1);
1631                                 setBlockNotSent(event->p);
1632                         }
1633                         else if(event->type == MEET_OTHER)
1634                         {
1635                                 infostream<<"Server: MEET_OTHER"<<std::endl;
1636                                 prof.add("MEET_OTHER", 1);
1637                                 for(core::map<v3s16, bool>::Iterator
1638                                                 i = event->modified_blocks.getIterator();
1639                                                 i.atEnd()==false; i++)
1640                                 {
1641                                         v3s16 p = i.getNode()->getKey();
1642                                         setBlockNotSent(p);
1643                                 }
1644                         }
1645                         else
1646                         {
1647                                 prof.add("unknown", 1);
1648                                 infostream<<"WARNING: Server: Unknown MapEditEvent "
1649                                                 <<((u32)event->type)<<std::endl;
1650                         }
1651
1652                         /*
1653                                 Set blocks not sent to far players
1654                         */
1655                         if(far_players.size() > 0)
1656                         {
1657                                 // Convert list format to that wanted by SetBlocksNotSent
1658                                 core::map<v3s16, MapBlock*> modified_blocks2;
1659                                 for(core::map<v3s16, bool>::Iterator
1660                                                 i = event->modified_blocks.getIterator();
1661                                                 i.atEnd()==false; i++)
1662                                 {
1663                                         v3s16 p = i.getNode()->getKey();
1664                                         modified_blocks2.insert(p,
1665                                                         m_env.getMap().getBlockNoCreateNoEx(p));
1666                                 }
1667                                 // Set blocks not sent
1668                                 for(core::list<u16>::Iterator
1669                                                 i = far_players.begin();
1670                                                 i != far_players.end(); i++)
1671                                 {
1672                                         u16 peer_id = *i;
1673                                         RemoteClient *client = getClient(peer_id);
1674                                         if(client==NULL)
1675                                                 continue;
1676                                         client->SetBlocksNotSent(modified_blocks2);
1677                                 }
1678                         }
1679
1680                         delete event;
1681
1682                         /*// Don't send too many at a time
1683                         count++;
1684                         if(count >= 1 && m_unsent_map_edit_queue.size() < 100)
1685                                 break;*/
1686                 }
1687
1688                 if(got_any_events)
1689                 {
1690                         infostream<<"Server: MapEditEvents:"<<std::endl;
1691                         prof.print(infostream);
1692                 }
1693
1694         }
1695
1696         /*
1697                 Send object positions
1698         */
1699         {
1700                 float &counter = m_objectdata_timer;
1701                 counter += dtime;
1702                 if(counter >= g_settings->getFloat("objectdata_interval"))
1703                 {
1704                         JMutexAutoLock lock1(m_env_mutex);
1705                         JMutexAutoLock lock2(m_con_mutex);
1706
1707                         //ScopeProfiler sp(g_profiler, "Server: sending player positions");
1708
1709                         SendObjectData(counter);
1710
1711                         counter = 0.0;
1712                 }
1713         }
1714
1715         /*
1716                 Trigger emergethread (it somehow gets to a non-triggered but
1717                 bysy state sometimes)
1718         */
1719         {
1720                 float &counter = m_emergethread_trigger_timer;
1721                 counter += dtime;
1722                 if(counter >= 2.0)
1723                 {
1724                         counter = 0.0;
1725
1726                         m_emergethread.trigger();
1727                 }
1728         }
1729
1730         // Save map, players and auth stuff
1731         {
1732                 float &counter = m_savemap_timer;
1733                 counter += dtime;
1734                 if(counter >= g_settings->getFloat("server_map_save_interval"))
1735                 {
1736                         counter = 0.0;
1737
1738                         ScopeProfiler sp(g_profiler, "Server: saving stuff");
1739
1740                         // Auth stuff
1741                         if(m_authmanager.isModified())
1742                                 m_authmanager.save();
1743
1744                         //Bann stuff
1745                         if(m_banmanager.isModified())
1746                                 m_banmanager.save();
1747
1748                         // Map
1749                         JMutexAutoLock lock(m_env_mutex);
1750
1751                         /*// Unload unused data (delete from memory)
1752                         m_env.getMap().unloadUnusedData(
1753                                         g_settings->getFloat("server_unload_unused_sectors_timeout"));
1754                                         */
1755                         /*u32 deleted_count = m_env.getMap().unloadUnusedData(
1756                                         g_settings->getFloat("server_unload_unused_sectors_timeout"));
1757                                         */
1758
1759                         // Save only changed parts
1760                         m_env.getMap().save(true);
1761
1762                         /*if(deleted_count > 0)
1763                         {
1764                                 infostream<<"Server: Unloaded "<<deleted_count
1765                                                 <<" blocks from memory"<<std::endl;
1766                         }*/
1767
1768                         // Save players
1769                         m_env.serializePlayers(m_mapsavedir);
1770
1771                         // Save environment metadata
1772                         m_env.saveMeta(m_mapsavedir);
1773                 }
1774         }
1775 }
1776
1777 void Server::Receive()
1778 {
1779         DSTACK(__FUNCTION_NAME);
1780         u32 data_maxsize = 10000;
1781         Buffer<u8> data(data_maxsize);
1782         u16 peer_id;
1783         u32 datasize;
1784         try{
1785                 {
1786                         JMutexAutoLock conlock(m_con_mutex);
1787                         datasize = m_con.Receive(peer_id, *data, data_maxsize);
1788                 }
1789
1790                 // This has to be called so that the client list gets synced
1791                 // with the peer list of the connection
1792                 handlePeerChanges();
1793
1794                 ProcessData(*data, datasize, peer_id);
1795         }
1796         catch(con::InvalidIncomingDataException &e)
1797         {
1798                 infostream<<"Server::Receive(): "
1799                                 "InvalidIncomingDataException: what()="
1800                                 <<e.what()<<std::endl;
1801         }
1802         catch(con::PeerNotFoundException &e)
1803         {
1804                 //NOTE: This is not needed anymore
1805
1806                 // The peer has been disconnected.
1807                 // Find the associated player and remove it.
1808
1809                 /*JMutexAutoLock envlock(m_env_mutex);
1810
1811                 infostream<<"ServerThread: peer_id="<<peer_id
1812                                 <<" has apparently closed connection. "
1813                                 <<"Removing player."<<std::endl;
1814
1815                 m_env.removePlayer(peer_id);*/
1816         }
1817 }
1818
1819 void Server::ProcessData(u8 *data, u32 datasize, u16 peer_id)
1820 {
1821         DSTACK(__FUNCTION_NAME);
1822         // Environment is locked first.
1823         JMutexAutoLock envlock(m_env_mutex);
1824         JMutexAutoLock conlock(m_con_mutex);
1825
1826         con::Peer *peer;
1827         try{
1828                 peer = m_con.GetPeer(peer_id);
1829         }
1830         catch(con::PeerNotFoundException &e)
1831         {
1832                 infostream<<"Server::ProcessData(): Cancelling: peer "
1833                                 <<peer_id<<" not found"<<std::endl;
1834                 return;
1835         }
1836
1837         // drop player if is ip is banned
1838         if(m_banmanager.isIpBanned(peer->address.serializeString())){
1839                 SendAccessDenied(m_con, peer_id,
1840                                 L"Your ip is banned. Banned name was "
1841                                 +narrow_to_wide(m_banmanager.getBanName(
1842                                         peer->address.serializeString())));
1843                 m_con.deletePeer(peer_id, false);
1844                 return;
1845         }
1846
1847         u8 peer_ser_ver = getClient(peer->id)->serialization_version;
1848
1849         try
1850         {
1851
1852         if(datasize < 2)
1853                 return;
1854
1855         ToServerCommand command = (ToServerCommand)readU16(&data[0]);
1856
1857         if(command == TOSERVER_INIT)
1858         {
1859                 // [0] u16 TOSERVER_INIT
1860                 // [2] u8 SER_FMT_VER_HIGHEST
1861                 // [3] u8[20] player_name
1862                 // [23] u8[28] password <--- can be sent without this, from old versions
1863
1864                 if(datasize < 2+1+PLAYERNAME_SIZE)
1865                         return;
1866
1867                 infostream<<"Server: Got TOSERVER_INIT from "
1868                                 <<peer->id<<std::endl;
1869
1870                 // First byte after command is maximum supported
1871                 // serialization version
1872                 u8 client_max = data[2];
1873                 u8 our_max = SER_FMT_VER_HIGHEST;
1874                 // Use the highest version supported by both
1875                 u8 deployed = core::min_(client_max, our_max);
1876                 // If it's lower than the lowest supported, give up.
1877                 if(deployed < SER_FMT_VER_LOWEST)
1878                         deployed = SER_FMT_VER_INVALID;
1879
1880                 //peer->serialization_version = deployed;
1881                 getClient(peer->id)->pending_serialization_version = deployed;
1882
1883                 if(deployed == SER_FMT_VER_INVALID)
1884                 {
1885                         infostream<<"Server: Cannot negotiate "
1886                                         "serialization version with peer "
1887                                         <<peer_id<<std::endl;
1888                         SendAccessDenied(m_con, peer_id,
1889                                         L"Your client is too old (map format)");
1890                         return;
1891                 }
1892
1893                 /*
1894                         Read and check network protocol version
1895                 */
1896
1897                 u16 net_proto_version = 0;
1898                 if(datasize >= 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE+2)
1899                 {
1900                         net_proto_version = readU16(&data[2+1+PLAYERNAME_SIZE+PASSWORD_SIZE]);
1901                 }
1902
1903                 getClient(peer->id)->net_proto_version = net_proto_version;
1904
1905                 if(net_proto_version == 0)
1906                 {
1907                         SendAccessDenied(m_con, peer_id,
1908                                         L"Your client is too old. Please upgrade.");
1909                         return;
1910                 }
1911
1912                 /* Uhh... this should actually be a warning but let's do it like this */
1913                 if(g_settings->getBool("strict_protocol_version_checking"))
1914                 {
1915                         if(net_proto_version < PROTOCOL_VERSION)
1916                         {
1917                                 SendAccessDenied(m_con, peer_id,
1918                                                 L"Your client is too old. Please upgrade.");
1919                                 return;
1920                         }
1921                 }
1922
1923                 /*
1924                         Set up player
1925                 */
1926
1927                 // Get player name
1928                 char playername[PLAYERNAME_SIZE];
1929                 for(u32 i=0; i<PLAYERNAME_SIZE-1; i++)
1930                 {
1931                         playername[i] = data[3+i];
1932                 }
1933                 playername[PLAYERNAME_SIZE-1] = 0;
1934
1935                 if(playername[0]=='\0')
1936                 {
1937                         infostream<<"Server: Player has empty name"<<std::endl;
1938                         SendAccessDenied(m_con, peer_id,
1939                                         L"Empty name");
1940                         return;
1941                 }
1942
1943                 if(string_allowed(playername, PLAYERNAME_ALLOWED_CHARS)==false)
1944                 {
1945                         infostream<<"Server: Player has invalid name"<<std::endl;
1946                         SendAccessDenied(m_con, peer_id,
1947                                         L"Name contains unallowed characters");
1948                         return;
1949                 }
1950
1951                 // Get password
1952                 char password[PASSWORD_SIZE];
1953                 if(datasize < 2+1+PLAYERNAME_SIZE+PASSWORD_SIZE)
1954                 {
1955                         // old version - assume blank password
1956                         password[0] = 0;
1957                 }
1958                 else
1959                 {
1960                                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
1961                                 {
1962                                         password[i] = data[23+i];
1963                                 }
1964                                 password[PASSWORD_SIZE-1] = 0;
1965                 }
1966
1967                 std::string checkpwd;
1968                 if(m_authmanager.exists(playername))
1969                 {
1970                         checkpwd = m_authmanager.getPassword(playername);
1971                 }
1972                 else
1973                 {
1974                         checkpwd = g_settings->get("default_password");
1975                 }
1976
1977                 /*infostream<<"Server: Client gave password '"<<password
1978                                 <<"', the correct one is '"<<checkpwd<<"'"<<std::endl;*/
1979
1980                 if(password != checkpwd && m_authmanager.exists(playername))
1981                 {
1982                         infostream<<"Server: peer_id="<<peer_id
1983                                         <<": supplied invalid password for "
1984                                         <<playername<<std::endl;
1985                         SendAccessDenied(m_con, peer_id, L"Invalid password");
1986                         return;
1987                 }
1988
1989                 // Add player to auth manager
1990                 if(m_authmanager.exists(playername) == false)
1991                 {
1992                         infostream<<"Server: adding player "<<playername
1993                                         <<" to auth manager"<<std::endl;
1994                         m_authmanager.add(playername);
1995                         m_authmanager.setPassword(playername, checkpwd);
1996                         m_authmanager.setPrivs(playername,
1997                                         stringToPrivs(g_settings->get("default_privs")));
1998                         m_authmanager.save();
1999                 }
2000
2001                 // Enforce user limit.
2002                 // Don't enforce for users that have some admin right
2003                 if(m_clients.size() >= g_settings->getU16("max_users") &&
2004                                 (m_authmanager.getPrivs(playername)
2005                                         & (PRIV_SERVER|PRIV_BAN|PRIV_PRIVS)) == 0 &&
2006                                 playername != g_settings->get("name"))
2007                 {
2008                         SendAccessDenied(m_con, peer_id, L"Too many users.");
2009                         return;
2010                 }
2011
2012                 // Get player
2013                 Player *player = emergePlayer(playername, password, peer_id);
2014
2015                 // If failed, cancel
2016                 if(player == NULL)
2017                 {
2018                         infostream<<"Server: peer_id="<<peer_id
2019                                         <<": failed to emerge player"<<std::endl;
2020                         return;
2021                 }
2022
2023                 /*
2024                         Answer with a TOCLIENT_INIT
2025                 */
2026                 {
2027                         SharedBuffer<u8> reply(2+1+6+8);
2028                         writeU16(&reply[0], TOCLIENT_INIT);
2029                         writeU8(&reply[2], deployed);
2030                         writeV3S16(&reply[2+1], floatToInt(player->getPosition()+v3f(0,BS/2,0), BS));
2031                         writeU64(&reply[2+1+6], m_env.getServerMap().getSeed());
2032
2033                         // Send as reliable
2034                         m_con.Send(peer_id, 0, reply, true);
2035                 }
2036
2037                 /*
2038                         Send complete position information
2039                 */
2040                 SendMovePlayer(player);
2041
2042                 return;
2043         }
2044
2045         if(command == TOSERVER_INIT2)
2046         {
2047                 infostream<<"Server: Got TOSERVER_INIT2 from "
2048                                 <<peer->id<<std::endl;
2049
2050
2051                 getClient(peer->id)->serialization_version
2052                                 = getClient(peer->id)->pending_serialization_version;
2053
2054                 /*
2055                         Send some initialization data
2056                 */
2057
2058                 // Send player info to all players
2059                 SendPlayerInfos();
2060
2061                 // Send inventory to player
2062                 UpdateCrafting(peer->id);
2063                 SendInventory(peer->id);
2064
2065                 // Send player items to all players
2066                 SendPlayerItems();
2067
2068                 Player *player = m_env.getPlayer(peer_id);
2069
2070                 // Send HP
2071                 SendPlayerHP(player);
2072
2073                 // Send time of day
2074                 {
2075                         SharedBuffer<u8> data = makePacket_TOCLIENT_TIME_OF_DAY(
2076                                         m_env.getTimeOfDay());
2077                         m_con.Send(peer->id, 0, data, true);
2078                 }
2079
2080                 // Send information about server to player in chat
2081                 SendChatMessage(peer_id, getStatusString());
2082
2083                 // Send information about joining in chat
2084                 {
2085                         std::wstring name = L"unknown";
2086                         Player *player = m_env.getPlayer(peer_id);
2087                         if(player != NULL)
2088                                 name = narrow_to_wide(player->getName());
2089
2090                         std::wstring message;
2091                         message += L"*** ";
2092                         message += name;
2093                         message += L" joined game";
2094                         BroadcastChatMessage(message);
2095                 }
2096
2097                 // Warnings about protocol version can be issued here
2098                 if(getClient(peer->id)->net_proto_version < PROTOCOL_VERSION)
2099                 {
2100                         SendChatMessage(peer_id, L"# Server: WARNING: YOUR CLIENT IS OLD AND MAY WORK PROPERLY WITH THIS SERVER");
2101                 }
2102
2103                 /*
2104                         Check HP, respawn if necessary
2105                 */
2106                 HandlePlayerHP(player, 0);
2107
2108                 /*
2109                         Print out action
2110                 */
2111                 {
2112                         std::ostringstream os(std::ios_base::binary);
2113                         for(core::map<u16, RemoteClient*>::Iterator
2114                                 i = m_clients.getIterator();
2115                                 i.atEnd() == false; i++)
2116                         {
2117                                 RemoteClient *client = i.getNode()->getValue();
2118                                 assert(client->peer_id == i.getNode()->getKey());
2119                                 if(client->serialization_version == SER_FMT_VER_INVALID)
2120                                         continue;
2121                                 // Get player
2122                                 Player *player = m_env.getPlayer(client->peer_id);
2123                                 if(!player)
2124                                         continue;
2125                                 // Get name of player
2126                                 os<<player->getName()<<" ";
2127                         }
2128
2129                         actionstream<<player->getName()<<" joins game. List of players: "
2130                                         <<os.str()<<std::endl;
2131                 }
2132
2133                 return;
2134         }
2135
2136         if(peer_ser_ver == SER_FMT_VER_INVALID)
2137         {
2138                 infostream<<"Server::ProcessData(): Cancelling: Peer"
2139                                 " serialization format invalid or not initialized."
2140                                 " Skipping incoming command="<<command<<std::endl;
2141                 return;
2142         }
2143
2144         Player *player = m_env.getPlayer(peer_id);
2145
2146         if(player == NULL){
2147                 infostream<<"Server::ProcessData(): Cancelling: "
2148                                 "No player for peer_id="<<peer_id
2149                                 <<std::endl;
2150                 return;
2151         }
2152         if(command == TOSERVER_PLAYERPOS)
2153         {
2154                 if(datasize < 2+12+12+4+4)
2155                         return;
2156
2157                 u32 start = 0;
2158                 v3s32 ps = readV3S32(&data[start+2]);
2159                 v3s32 ss = readV3S32(&data[start+2+12]);
2160                 f32 pitch = (f32)readS32(&data[2+12+12]) / 100.0;
2161                 f32 yaw = (f32)readS32(&data[2+12+12+4]) / 100.0;
2162                 v3f position((f32)ps.X/100., (f32)ps.Y/100., (f32)ps.Z/100.);
2163                 v3f speed((f32)ss.X/100., (f32)ss.Y/100., (f32)ss.Z/100.);
2164                 pitch = wrapDegrees(pitch);
2165                 yaw = wrapDegrees(yaw);
2166
2167                 player->setPosition(position);
2168                 player->setSpeed(speed);
2169                 player->setPitch(pitch);
2170                 player->setYaw(yaw);
2171
2172                 /*infostream<<"Server::ProcessData(): Moved player "<<peer_id<<" to "
2173                                 <<"("<<position.X<<","<<position.Y<<","<<position.Z<<")"
2174                                 <<" pitch="<<pitch<<" yaw="<<yaw<<std::endl;*/
2175         }
2176         else if(command == TOSERVER_GOTBLOCKS)
2177         {
2178                 if(datasize < 2+1)
2179                         return;
2180
2181                 /*
2182                         [0] u16 command
2183                         [2] u8 count
2184                         [3] v3s16 pos_0
2185                         [3+6] v3s16 pos_1
2186                         ...
2187                 */
2188
2189                 u16 count = data[2];
2190                 for(u16 i=0; i<count; i++)
2191                 {
2192                         if((s16)datasize < 2+1+(i+1)*6)
2193                                 throw con::InvalidIncomingDataException
2194                                         ("GOTBLOCKS length is too short");
2195                         v3s16 p = readV3S16(&data[2+1+i*6]);
2196                         /*infostream<<"Server: GOTBLOCKS ("
2197                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2198                         RemoteClient *client = getClient(peer_id);
2199                         client->GotBlock(p);
2200                 }
2201         }
2202         else if(command == TOSERVER_DELETEDBLOCKS)
2203         {
2204                 if(datasize < 2+1)
2205                         return;
2206
2207                 /*
2208                         [0] u16 command
2209                         [2] u8 count
2210                         [3] v3s16 pos_0
2211                         [3+6] v3s16 pos_1
2212                         ...
2213                 */
2214
2215                 u16 count = data[2];
2216                 for(u16 i=0; i<count; i++)
2217                 {
2218                         if((s16)datasize < 2+1+(i+1)*6)
2219                                 throw con::InvalidIncomingDataException
2220                                         ("DELETEDBLOCKS length is too short");
2221                         v3s16 p = readV3S16(&data[2+1+i*6]);
2222                         /*infostream<<"Server: DELETEDBLOCKS ("
2223                                         <<p.X<<","<<p.Y<<","<<p.Z<<")"<<std::endl;*/
2224                         RemoteClient *client = getClient(peer_id);
2225                         client->SetBlockNotSent(p);
2226                 }
2227         }
2228         else if(command == TOSERVER_CLICK_OBJECT)
2229         {
2230                 infostream<<"Server: CLICK_OBJECT not supported anymore"<<std::endl;
2231                 return;
2232         }
2233         else if(command == TOSERVER_CLICK_ACTIVEOBJECT)
2234         {
2235                 if(datasize < 7)
2236                         return;
2237
2238                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2239                         return;
2240
2241                 /*
2242                         length: 7
2243                         [0] u16 command
2244                         [2] u8 button (0=left, 1=right)
2245                         [3] u16 id
2246                         [5] u16 item
2247                 */
2248                 u8 button = readU8(&data[2]);
2249                 u16 id = readS16(&data[3]);
2250                 u16 item_i = readU16(&data[5]);
2251
2252                 ServerActiveObject *obj = m_env.getActiveObject(id);
2253
2254                 if(obj == NULL)
2255                 {
2256                         infostream<<"Server: CLICK_ACTIVEOBJECT: object not found"
2257                                         <<std::endl;
2258                         return;
2259                 }
2260
2261                 // Skip if object has been removed
2262                 if(obj->m_removed)
2263                         return;
2264
2265                 //TODO: Check that object is reasonably close
2266
2267                 // Left click, pick object up (usually)
2268                 if(button == 0)
2269                 {
2270                         /*
2271                                 Try creating inventory item
2272                         */
2273                         InventoryItem *item = obj->createPickedUpItem();
2274
2275                         if(item)
2276                         {
2277                                 InventoryList *ilist = player->inventory.getList("main");
2278                                 if(ilist != NULL)
2279                                 {
2280                                         actionstream<<player->getName()<<" picked up "
2281                                                         <<item->getName()<<std::endl;
2282                                         if(g_settings->getBool("creative_mode") == false)
2283                                         {
2284                                                 // Skip if inventory has no free space
2285                                                 if(ilist->roomForItem(item) == false)
2286                                                 {
2287                                                         infostream<<"Player inventory has no free space"<<std::endl;
2288                                                         return;
2289                                                 }
2290
2291                                                 // Add to inventory and send inventory
2292                                                 ilist->addItem(item);
2293                                                 UpdateCrafting(player->peer_id);
2294                                                 SendInventory(player->peer_id);
2295                                         }
2296
2297                                         // Remove object from environment
2298                                         obj->m_removed = true;
2299                                 }
2300                         }
2301                         else
2302                         {
2303                                 /*
2304                                         Item cannot be picked up. Punch it instead.
2305                                 */
2306
2307                                 actionstream<<player->getName()<<" punches object "
2308                                                 <<obj->getId()<<std::endl;
2309
2310                                 ToolItem *titem = NULL;
2311                                 std::string toolname = "";
2312
2313                                 InventoryList *mlist = player->inventory.getList("main");
2314                                 if(mlist != NULL)
2315                                 {
2316                                         InventoryItem *item = mlist->getItem(item_i);
2317                                         if(item && (std::string)item->getName() == "ToolItem")
2318                                         {
2319                                                 titem = (ToolItem*)item;
2320                                                 toolname = titem->getToolName();
2321                                         }
2322                                 }
2323
2324                                 v3f playerpos = player->getPosition();
2325                                 v3f objpos = obj->getBasePosition();
2326                                 v3f dir = (objpos - playerpos).normalize();
2327
2328                                 u16 wear = obj->punch(toolname, dir, player->getName());
2329
2330                                 if(titem)
2331                                 {
2332                                         bool weared_out = titem->addWear(wear);
2333                                         if(weared_out)
2334                                                 mlist->deleteItem(item_i);
2335                                         SendInventory(player->peer_id);
2336                                 }
2337                         }
2338                 }
2339                 // Right click, do something with object
2340                 if(button == 1)
2341                 {
2342                         actionstream<<player->getName()<<" right clicks object "
2343                                         <<obj->getId()<<std::endl;
2344
2345                         // Track hp changes super-crappily
2346                         u16 oldhp = player->hp;
2347
2348                         // Do stuff
2349                         obj->rightClick(player);
2350
2351                         // Send back stuff
2352                         if(player->hp != oldhp)
2353                         {
2354                                 SendPlayerHP(player);
2355                         }
2356                 }
2357         }
2358         else if(command == TOSERVER_GROUND_ACTION)
2359         {
2360                 if(datasize < 17)
2361                         return;
2362                 /*
2363                         length: 17
2364                         [0] u16 command
2365                         [2] u8 action
2366                         [3] v3s16 nodepos_undersurface
2367                         [9] v3s16 nodepos_abovesurface
2368                         [15] u16 item
2369                         actions:
2370                         0: start digging
2371                         1: place block
2372                         2: stop digging (all parameters ignored)
2373                         3: digging completed
2374                 */
2375                 u8 action = readU8(&data[2]);
2376                 v3s16 p_under;
2377                 p_under.X = readS16(&data[3]);
2378                 p_under.Y = readS16(&data[5]);
2379                 p_under.Z = readS16(&data[7]);
2380                 v3s16 p_over;
2381                 p_over.X = readS16(&data[9]);
2382                 p_over.Y = readS16(&data[11]);
2383                 p_over.Z = readS16(&data[13]);
2384                 u16 item_i = readU16(&data[15]);
2385
2386                 //TODO: Check that target is reasonably close
2387
2388                 /*
2389                         0: start digging
2390                 */
2391                 if(action == 0)
2392                 {
2393                         /*
2394                                 NOTE: This can be used in the future to check if
2395                                 somebody is cheating, by checking the timing.
2396                         */
2397                 } // action == 0
2398
2399                 /*
2400                         2: stop digging
2401                 */
2402                 else if(action == 2)
2403                 {
2404 #if 0
2405                         RemoteClient *client = getClient(peer->id);
2406                         JMutexAutoLock digmutex(client->m_dig_mutex);
2407                         client->m_dig_tool_item = -1;
2408 #endif
2409                 }
2410
2411                 /*
2412                         3: Digging completed
2413                 */
2414                 else if(action == 3)
2415                 {
2416                         // Mandatory parameter; actually used for nothing
2417                         core::map<v3s16, MapBlock*> modified_blocks;
2418
2419                         content_t material = CONTENT_IGNORE;
2420                         u8 mineral = MINERAL_NONE;
2421
2422                         bool cannot_remove_node = false;
2423
2424                         try
2425                         {
2426                                 MapNode n = m_env.getMap().getNode(p_under);
2427                                 // Get mineral
2428                                 mineral = n.getMineral();
2429                                 // Get material at position
2430                                 material = n.getContent();
2431                                 // If not yet cancelled
2432                                 if(cannot_remove_node == false)
2433                                 {
2434                                         // If it's not diggable, do nothing
2435                                         if(content_diggable(material) == false)
2436                                         {
2437                                                 infostream<<"Server: Not finishing digging: "
2438                                                                 <<"Node not diggable"
2439                                                                 <<std::endl;
2440                                                 cannot_remove_node = true;
2441                                         }
2442                                 }
2443                                 // If not yet cancelled
2444                                 if(cannot_remove_node == false)
2445                                 {
2446                                         // Get node metadata
2447                                         NodeMetadata *meta = m_env.getMap().getNodeMetadata(p_under);
2448                                         if(meta && meta->nodeRemovalDisabled() == true)
2449                                         {
2450                                                 infostream<<"Server: Not finishing digging: "
2451                                                                 <<"Node metadata disables removal"
2452                                                                 <<std::endl;
2453                                                 cannot_remove_node = true;
2454                                         }
2455                                 }
2456                         }
2457                         catch(InvalidPositionException &e)
2458                         {
2459                                 infostream<<"Server: Not finishing digging: Node not found."
2460                                                 <<" Adding block to emerge queue."
2461                                                 <<std::endl;
2462                                 m_emerge_queue.addBlock(peer_id,
2463                                                 getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2464                                 cannot_remove_node = true;
2465                         }
2466
2467                         // Make sure the player is allowed to do it
2468                         if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2469                         {
2470                                 infostream<<"Player "<<player->getName()<<" cannot remove node"
2471                                                 <<" because privileges are "<<getPlayerPrivs(player)
2472                                                 <<std::endl;
2473                                 cannot_remove_node = true;
2474                         }
2475
2476                         /*
2477                                 If node can't be removed, set block to be re-sent to
2478                                 client and quit.
2479                         */
2480                         if(cannot_remove_node)
2481                         {
2482                                 infostream<<"Server: Not finishing digging."<<std::endl;
2483
2484                                 // Client probably has wrong data.
2485                                 // Set block not sent, so that client will get
2486                                 // a valid one.
2487                                 infostream<<"Client "<<peer_id<<" tried to dig "
2488                                                 <<"node; but node cannot be removed."
2489                                                 <<" setting MapBlock not sent."<<std::endl;
2490                                 RemoteClient *client = getClient(peer_id);
2491                                 v3s16 blockpos = getNodeBlockPos(p_under);
2492                                 client->SetBlockNotSent(blockpos);
2493
2494                                 return;
2495                         }
2496
2497                         actionstream<<player->getName()<<" digs "<<PP(p_under)
2498                                         <<", gets material "<<(int)material<<", mineral "
2499                                         <<(int)mineral<<std::endl;
2500
2501                         /*
2502                                 Send the removal to all close-by players.
2503                                 - If other player is close, send REMOVENODE
2504                                 - Otherwise set blocks not sent
2505                         */
2506                         core::list<u16> far_players;
2507                         sendRemoveNode(p_under, peer_id, &far_players, 30);
2508
2509                         /*
2510                                 Update and send inventory
2511                         */
2512
2513                         if(g_settings->getBool("creative_mode") == false)
2514                         {
2515                                 /*
2516                                         Wear out tool
2517                                 */
2518                                 InventoryList *mlist = player->inventory.getList("main");
2519                                 if(mlist != NULL)
2520                                 {
2521                                         InventoryItem *item = mlist->getItem(item_i);
2522                                         if(item && (std::string)item->getName() == "ToolItem")
2523                                         {
2524                                                 ToolItem *titem = (ToolItem*)item;
2525                                                 std::string toolname = titem->getToolName();
2526
2527                                                 // Get digging properties for material and tool
2528                                                 DiggingProperties prop =
2529                                                                 getDiggingProperties(material, toolname);
2530
2531                                                 if(prop.diggable == false)
2532                                                 {
2533                                                         infostream<<"Server: WARNING: Player digged"
2534                                                                         <<" with impossible material + tool"
2535                                                                         <<" combination"<<std::endl;
2536                                                 }
2537
2538                                                 bool weared_out = titem->addWear(prop.wear);
2539
2540                                                 if(weared_out)
2541                                                 {
2542                                                         mlist->deleteItem(item_i);
2543                                                 }
2544                                         }
2545                                 }
2546
2547                                 /*
2548                                         Add dug item to inventory
2549                                 */
2550
2551                                 InventoryItem *item = NULL;
2552
2553                                 if(mineral != MINERAL_NONE)
2554                                         item = getDiggedMineralItem(mineral);
2555
2556                                 // If not mineral
2557                                 if(item == NULL)
2558                                 {
2559                                         std::string &dug_s = content_features(material).dug_item;
2560                                         if(dug_s != "")
2561                                         {
2562                                                 std::istringstream is(dug_s, std::ios::binary);
2563                                                 item = InventoryItem::deSerialize(is);
2564                                         }
2565                                 }
2566
2567                                 if(item != NULL)
2568                                 {
2569                                         // Add a item to inventory
2570                                         player->inventory.addItem("main", item);
2571
2572                                         // Send inventory
2573                                         UpdateCrafting(player->peer_id);
2574                                         SendInventory(player->peer_id);
2575                                 }
2576
2577                                 item = NULL;
2578
2579                                 if(mineral != MINERAL_NONE)
2580                                   item = getDiggedMineralItem(mineral);
2581
2582                                 // If not mineral
2583                                 if(item == NULL)
2584                                 {
2585                                         std::string &extra_dug_s = content_features(material).extra_dug_item;
2586                                         s32 extra_rarity = content_features(material).extra_dug_item_rarity;
2587                                         if(extra_dug_s != "" && extra_rarity != 0
2588                                            && myrand() % extra_rarity == 0)
2589                                         {
2590                                                 std::istringstream is(extra_dug_s, std::ios::binary);
2591                                                 item = InventoryItem::deSerialize(is);
2592                                         }
2593                                 }
2594
2595                                 if(item != NULL)
2596                                 {
2597                                         // Add a item to inventory
2598                                         player->inventory.addItem("main", item);
2599
2600                                         // Send inventory
2601                                         UpdateCrafting(player->peer_id);
2602                                         SendInventory(player->peer_id);
2603                                 }
2604                         }
2605
2606                         /*
2607                                 Remove the node
2608                                 (this takes some time so it is done after the quick stuff)
2609                         */
2610                         {
2611                                 MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2612
2613                                 m_env.getMap().removeNodeAndUpdate(p_under, modified_blocks);
2614                         }
2615                         /*
2616                                 Set blocks not sent to far players
2617                         */
2618                         for(core::list<u16>::Iterator
2619                                         i = far_players.begin();
2620                                         i != far_players.end(); i++)
2621                         {
2622                                 u16 peer_id = *i;
2623                                 RemoteClient *client = getClient(peer_id);
2624                                 if(client==NULL)
2625                                         continue;
2626                                 client->SetBlocksNotSent(modified_blocks);
2627                         }
2628                 }
2629
2630                 /*
2631                         1: place block
2632                 */
2633                 else if(action == 1)
2634                 {
2635
2636                         InventoryList *ilist = player->inventory.getList("main");
2637                         if(ilist == NULL)
2638                                 return;
2639
2640                         // Get item
2641                         InventoryItem *item = ilist->getItem(item_i);
2642
2643                         // If there is no item, it is not possible to add it anywhere
2644                         if(item == NULL)
2645                                 return;
2646
2647                         /*
2648                                 Handle material items
2649                         */
2650                         if(std::string("MaterialItem") == item->getName())
2651                         {
2652                                 try{
2653                                         // Don't add a node if this is not a free space
2654                                         MapNode n2 = m_env.getMap().getNode(p_over);
2655                                         bool no_enough_privs =
2656                                                         ((getPlayerPrivs(player) & PRIV_BUILD)==0);
2657                                         if(no_enough_privs)
2658                                                 infostream<<"Player "<<player->getName()<<" cannot add node"
2659                                                         <<" because privileges are "<<getPlayerPrivs(player)
2660                                                         <<std::endl;
2661
2662                                         if(content_features(n2).buildable_to == false
2663                                                 || no_enough_privs)
2664                                         {
2665                                                 // Client probably has wrong data.
2666                                                 // Set block not sent, so that client will get
2667                                                 // a valid one.
2668                                                 infostream<<"Client "<<peer_id<<" tried to place"
2669                                                                 <<" node in invalid position; setting"
2670                                                                 <<" MapBlock not sent."<<std::endl;
2671                                                 RemoteClient *client = getClient(peer_id);
2672                                                 v3s16 blockpos = getNodeBlockPos(p_over);
2673                                                 client->SetBlockNotSent(blockpos);
2674                                                 return;
2675                                         }
2676                                 }
2677                                 catch(InvalidPositionException &e)
2678                                 {
2679                                         infostream<<"Server: Ignoring ADDNODE: Node not found"
2680                                                         <<" Adding block to emerge queue."
2681                                                         <<std::endl;
2682                                         m_emerge_queue.addBlock(peer_id,
2683                                                         getNodeBlockPos(p_over), BLOCK_EMERGE_FLAG_FROMDISK);
2684                                         return;
2685                                 }
2686
2687                                 // Reset build time counter
2688                                 getClient(peer->id)->m_time_from_building = 0.0;
2689
2690                                 // Create node data
2691                                 MaterialItem *mitem = (MaterialItem*)item;
2692                                 MapNode n;
2693                                 n.setContent(mitem->getMaterial());
2694
2695                                 actionstream<<player->getName()<<" places material "
2696                                                 <<(int)mitem->getMaterial()
2697                                                 <<" at "<<PP(p_under)<<std::endl;
2698
2699                                 // Calculate direction for wall mounted stuff
2700                                 if(content_features(n).wall_mounted)
2701                                         n.param2 = packDir(p_under - p_over);
2702
2703                                 // Calculate the direction for furnaces and chests and stuff
2704                                 if(content_features(n).param_type == CPT_FACEDIR_SIMPLE)
2705                                 {
2706                                         v3f playerpos = player->getPosition();
2707                                         v3f blockpos = intToFloat(p_over, BS) - playerpos;
2708                                         blockpos = blockpos.normalize();
2709                                         n.param1 = 0;
2710                                         if (fabs(blockpos.X) > fabs(blockpos.Z)) {
2711                                                 if (blockpos.X < 0)
2712                                                         n.param1 = 3;
2713                                                 else
2714                                                         n.param1 = 1;
2715                                         } else {
2716                                                 if (blockpos.Z < 0)
2717                                                         n.param1 = 2;
2718                                                 else
2719                                                         n.param1 = 0;
2720                                         }
2721                                 }
2722
2723                                 /*
2724                                         Send to all close-by players
2725                                 */
2726                                 core::list<u16> far_players;
2727                                 sendAddNode(p_over, n, 0, &far_players, 30);
2728
2729                                 /*
2730                                         Handle inventory
2731                                 */
2732                                 InventoryList *ilist = player->inventory.getList("main");
2733                                 if(g_settings->getBool("creative_mode") == false && ilist)
2734                                 {
2735                                         // Remove from inventory and send inventory
2736                                         if(mitem->getCount() == 1)
2737                                                 ilist->deleteItem(item_i);
2738                                         else
2739                                                 mitem->remove(1);
2740                                         // Send inventory
2741                                         UpdateCrafting(peer_id);
2742                                         SendInventory(peer_id);
2743                                 }
2744
2745                                 /*
2746                                         Add node.
2747
2748                                         This takes some time so it is done after the quick stuff
2749                                 */
2750                                 core::map<v3s16, MapBlock*> modified_blocks;
2751                                 {
2752                                         MapEditEventIgnorer ign(&m_ignore_map_edit_events);
2753
2754                                         std::string p_name = std::string(player->getName());
2755                                         m_env.getMap().addNodeAndUpdate(p_over, n, modified_blocks, p_name);
2756                                 }
2757                                 /*
2758                                         Set blocks not sent to far players
2759                                 */
2760                                 for(core::list<u16>::Iterator
2761                                                 i = far_players.begin();
2762                                                 i != far_players.end(); i++)
2763                                 {
2764                                         u16 peer_id = *i;
2765                                         RemoteClient *client = getClient(peer_id);
2766                                         if(client==NULL)
2767                                                 continue;
2768                                         client->SetBlocksNotSent(modified_blocks);
2769                                 }
2770
2771                                 /*
2772                                         Calculate special events
2773                                 */
2774
2775                                 /*if(n.d == CONTENT_MESE)
2776                                 {
2777                                         u32 count = 0;
2778                                         for(s16 z=-1; z<=1; z++)
2779                                         for(s16 y=-1; y<=1; y++)
2780                                         for(s16 x=-1; x<=1; x++)
2781                                         {
2782
2783                                         }
2784                                 }*/
2785                         }
2786                         /*
2787                                 Place other item (not a block)
2788                         */
2789                         else
2790                         {
2791                                 v3s16 blockpos = getNodeBlockPos(p_over);
2792
2793                                 /*
2794                                         Check that the block is loaded so that the item
2795                                         can properly be added to the static list too
2796                                 */
2797                                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
2798                                 if(block==NULL)
2799                                 {
2800                                         infostream<<"Error while placing object: "
2801                                                         "block not found"<<std::endl;
2802                                         return;
2803                                 }
2804
2805                                 /*
2806                                         If in creative mode, item dropping is disabled unless
2807                                         player has build privileges
2808                                 */
2809                                 if(g_settings->getBool("creative_mode") &&
2810                                         (getPlayerPrivs(player) & PRIV_BUILD) == 0)
2811                                 {
2812                                         infostream<<"Not allowing player to drop item: "
2813                                                         "creative mode and no build privs"<<std::endl;
2814                                         return;
2815                                 }
2816
2817                                 // Calculate a position for it
2818                                 v3f pos = intToFloat(p_over, BS);
2819                                 //pos.Y -= BS*0.45;
2820                                 pos.Y -= BS*0.25; // let it drop a bit
2821                                 // Randomize a bit
2822                                 pos.X += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2823                                 pos.Z += BS*0.2*(float)myrand_range(-1000,1000)/1000.0;
2824
2825                                 /*
2826                                         Create the object
2827                                 */
2828                                 ServerActiveObject *obj = item->createSAO(&m_env, 0, pos);
2829
2830                                 if(obj == NULL)
2831                                 {
2832                                         infostream<<"WARNING: item resulted in NULL object, "
2833                                                         <<"not placing onto map"
2834                                                         <<std::endl;
2835                                 }
2836                                 else
2837                                 {
2838                                         actionstream<<player->getName()<<" places "<<item->getName()
2839                                                         <<" at "<<PP(p_over)<<std::endl;
2840
2841                                         // Add the object to the environment
2842                                         m_env.addActiveObject(obj);
2843
2844                                         infostream<<"Placed object"<<std::endl;
2845
2846                                         if(g_settings->getBool("creative_mode") == false)
2847                                         {
2848                                                 // Delete the right amount of items from the slot
2849                                                 u16 dropcount = item->getDropCount();
2850
2851                                                 // Delete item if all gone
2852                                                 if(item->getCount() <= dropcount)
2853                                                 {
2854                                                         if(item->getCount() < dropcount)
2855                                                                 infostream<<"WARNING: Server: dropped more items"
2856                                                                                 <<" than the slot contains"<<std::endl;
2857
2858                                                         InventoryList *ilist = player->inventory.getList("main");
2859                                                         if(ilist)
2860                                                                 // Remove from inventory and send inventory
2861                                                                 ilist->deleteItem(item_i);
2862                                                 }
2863                                                 // Else decrement it
2864                                                 else
2865                                                         item->remove(dropcount);
2866
2867                                                 // Send inventory
2868                                                 UpdateCrafting(peer_id);
2869                                                 SendInventory(peer_id);
2870                                         }
2871                                 }
2872                         }
2873
2874                 } // action == 1
2875
2876                 /*
2877                         Catch invalid actions
2878                 */
2879                 else
2880                 {
2881                         infostream<<"WARNING: Server: Invalid action "
2882                                         <<action<<std::endl;
2883                 }
2884         }
2885 #if 0
2886         else if(command == TOSERVER_RELEASE)
2887         {
2888                 if(datasize < 3)
2889                         return;
2890                 /*
2891                         length: 3
2892                         [0] u16 command
2893                         [2] u8 button
2894                 */
2895                 infostream<<"TOSERVER_RELEASE ignored"<<std::endl;
2896         }
2897 #endif
2898         else if(command == TOSERVER_SIGNTEXT)
2899         {
2900                 infostream<<"Server: TOSERVER_SIGNTEXT not supported anymore"
2901                                 <<std::endl;
2902                 return;
2903         }
2904         else if(command == TOSERVER_SIGNNODETEXT)
2905         {
2906                 if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
2907                         return;
2908                 /*
2909                         u16 command
2910                         v3s16 p
2911                         u16 textlen
2912                         textdata
2913                 */
2914                 std::string datastring((char*)&data[2], datasize-2);
2915                 std::istringstream is(datastring, std::ios_base::binary);
2916                 u8 buf[6];
2917                 // Read stuff
2918                 is.read((char*)buf, 6);
2919                 v3s16 p = readV3S16(buf);
2920                 is.read((char*)buf, 2);
2921                 u16 textlen = readU16(buf);
2922                 std::string text;
2923                 for(u16 i=0; i<textlen; i++)
2924                 {
2925                         is.read((char*)buf, 1);
2926                         text += (char)buf[0];
2927                 }
2928
2929                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
2930                 if(!meta)
2931                         return;
2932                 if(meta->typeId() != CONTENT_SIGN_WALL)
2933                         return;
2934                 SignNodeMetadata *signmeta = (SignNodeMetadata*)meta;
2935                 signmeta->setText(text);
2936
2937                 actionstream<<player->getName()<<" writes \""<<text<<"\" to sign "
2938                                 <<" at "<<PP(p)<<std::endl;
2939
2940                 v3s16 blockpos = getNodeBlockPos(p);
2941                 MapBlock *block = m_env.getMap().getBlockNoCreateNoEx(blockpos);
2942                 if(block)
2943                 {
2944                         block->setChangedFlag();
2945                 }
2946
2947                 for(core::map<u16, RemoteClient*>::Iterator
2948                         i = m_clients.getIterator();
2949                         i.atEnd()==false; i++)
2950                 {
2951                         RemoteClient *client = i.getNode()->getValue();
2952                         client->SetBlockNotSent(blockpos);
2953                 }
2954         }
2955         else if(command == TOSERVER_INVENTORY_ACTION)
2956         {
2957                 /*// Ignore inventory changes if in creative mode
2958                 if(g_settings->getBool("creative_mode") == true)
2959                 {
2960                         infostream<<"TOSERVER_INVENTORY_ACTION: ignoring in creative mode"
2961                                         <<std::endl;
2962                         return;
2963                 }*/
2964                 // Strip command and create a stream
2965                 std::string datastring((char*)&data[2], datasize-2);
2966                 infostream<<"TOSERVER_INVENTORY_ACTION: data="<<datastring<<std::endl;
2967                 std::istringstream is(datastring, std::ios_base::binary);
2968                 // Create an action
2969                 InventoryAction *a = InventoryAction::deSerialize(is);
2970                 if(a != NULL)
2971                 {
2972                         // Create context
2973                         InventoryContext c;
2974                         c.current_player = player;
2975
2976                         /*
2977                                 Handle craftresult specially if not in creative mode
2978                         */
2979                         bool disable_action = false;
2980                         if(a->getType() == IACTION_MOVE
2981                                         && g_settings->getBool("creative_mode") == false)
2982                         {
2983                                 IMoveAction *ma = (IMoveAction*)a;
2984                                 if(ma->to_inv == "current_player" &&
2985                                                 ma->from_inv == "current_player")
2986                                 {
2987                                         InventoryList *rlist = player->inventory.getList("craftresult");
2988                                         assert(rlist);
2989                                         InventoryList *clist = player->inventory.getList("craft");
2990                                         assert(clist);
2991                                         InventoryList *mlist = player->inventory.getList("main");
2992                                         assert(mlist);
2993                                         /*
2994                                                 Craftresult is no longer preview if something
2995                                                 is moved into it
2996                                         */
2997                                         if(ma->to_list == "craftresult"
2998                                                         && ma->from_list != "craftresult")
2999                                         {
3000                                                 // If it currently is a preview, remove
3001                                                 // its contents
3002                                                 if(player->craftresult_is_preview)
3003                                                 {
3004                                                         rlist->deleteItem(0);
3005                                                 }
3006                                                 player->craftresult_is_preview = false;
3007                                         }
3008                                         /*
3009                                                 Crafting takes place if this condition is true.
3010                                         */
3011                                         if(player->craftresult_is_preview &&
3012                                                         ma->from_list == "craftresult")
3013                                         {
3014                                                 player->craftresult_is_preview = false;
3015                                                 clist->decrementMaterials(1);
3016
3017                                                 /* Print out action */
3018                                                 InventoryList *list =
3019                                                                 player->inventory.getList("craftresult");
3020                                                 assert(list);
3021                                                 InventoryItem *item = list->getItem(0);
3022                                                 std::string itemname = "NULL";
3023                                                 if(item)
3024                                                         itemname = item->getName();
3025                                                 actionstream<<player->getName()<<" crafts "
3026                                                                 <<itemname<<std::endl;
3027                                         }
3028                                         /*
3029                                                 If the craftresult is placed on itself, move it to
3030                                                 main inventory instead of doing the action
3031                                         */
3032                                         if(ma->to_list == "craftresult"
3033                                                         && ma->from_list == "craftresult")
3034                                         {
3035                                                 disable_action = true;
3036
3037                                                 InventoryItem *item1 = rlist->changeItem(0, NULL);
3038                                                 mlist->addItem(item1);
3039                                         }
3040                                 }
3041                                 // Disallow moving items if not allowed to build
3042                                 else if((getPlayerPrivs(player) & PRIV_BUILD) == 0)
3043                                 {
3044                                         return;
3045                                 }
3046                                 // if it's a locking chest, only allow the owner or server admins to move items
3047                                 else if (ma->from_inv != "current_player" && (getPlayerPrivs(player) & PRIV_SERVER) == 0)
3048                                 {
3049                                         Strfnd fn(ma->from_inv);
3050                                         std::string id0 = fn.next(":");
3051                                         if(id0 == "nodemeta")
3052                                         {
3053                                                 v3s16 p;
3054                                                 p.X = stoi(fn.next(","));
3055                                                 p.Y = stoi(fn.next(","));
3056                                                 p.Z = stoi(fn.next(","));
3057                                                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3058                                                 if(meta && meta->typeId() == CONTENT_LOCKABLE_CHEST) {
3059                                                         LockingChestNodeMetadata *lcm = (LockingChestNodeMetadata*)meta;
3060                                                         if (lcm->getOwner() != player->getName())
3061                                                                 return;
3062                                                 }
3063                                         }
3064                                 }
3065                                 else if (ma->to_inv != "current_player" && (getPlayerPrivs(player) & PRIV_SERVER) == 0)
3066                                 {
3067                                         Strfnd fn(ma->to_inv);
3068                                         std::string id0 = fn.next(":");
3069                                         if(id0 == "nodemeta")
3070                                         {
3071                                                 v3s16 p;
3072                                                 p.X = stoi(fn.next(","));
3073                                                 p.Y = stoi(fn.next(","));
3074                                                 p.Z = stoi(fn.next(","));
3075                                                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3076                                                 if(meta && meta->typeId() == CONTENT_LOCKABLE_CHEST) {
3077                                                         LockingChestNodeMetadata *lcm = (LockingChestNodeMetadata*)meta;
3078                                                         if (lcm->getOwner() != player->getName())
3079                                                                 return;
3080                                                 }
3081                                         }
3082                                 }
3083                         }
3084
3085                         if(disable_action == false)
3086                         {
3087                                 // Feed action to player inventory
3088                                 a->apply(&c, this);
3089                                 // Eat the action
3090                                 delete a;
3091                         }
3092                         else
3093                         {
3094                                 // Send inventory
3095                                 UpdateCrafting(player->peer_id);
3096                                 SendInventory(player->peer_id);
3097                         }
3098                 }
3099                 else
3100                 {
3101                         infostream<<"TOSERVER_INVENTORY_ACTION: "
3102                                         <<"InventoryAction::deSerialize() returned NULL"
3103                                         <<std::endl;
3104                 }
3105         }
3106         else if(command == TOSERVER_CHAT_MESSAGE)
3107         {
3108                 /*
3109                         u16 command
3110                         u16 length
3111                         wstring message
3112                 */
3113                 u8 buf[6];
3114                 std::string datastring((char*)&data[2], datasize-2);
3115                 std::istringstream is(datastring, std::ios_base::binary);
3116
3117                 // Read stuff
3118                 is.read((char*)buf, 2);
3119                 u16 len = readU16(buf);
3120
3121                 std::wstring message;
3122                 for(u16 i=0; i<len; i++)
3123                 {
3124                         is.read((char*)buf, 2);
3125                         message += (wchar_t)readU16(buf);
3126                 }
3127
3128                 // Get player name of this client
3129                 std::wstring name = narrow_to_wide(player->getName());
3130
3131                 // Line to send to players
3132                 std::wstring line;
3133                 // Whether to send to the player that sent the line
3134                 bool send_to_sender = false;
3135                 // Whether to send to other players
3136                 bool send_to_others = false;
3137
3138                 // Local player gets all privileges regardless of
3139                 // what's set on their account.
3140                 u64 privs = getPlayerPrivs(player);
3141
3142                 // Parse commands
3143                 if(message[0] == L'/')
3144                 {
3145                         size_t strip_size = 1;
3146                         if (message[1] == L'#') // support old-style commans
3147                                 ++strip_size;
3148                         message = message.substr(strip_size);
3149
3150                         WStrfnd f1(message);
3151                         f1.next(L" "); // Skip over /#whatever
3152                         std::wstring paramstring = f1.next(L"");
3153
3154                         ServerCommandContext *ctx = new ServerCommandContext(
3155                                 str_split(message, L' '),
3156                                 paramstring,
3157                                 this,
3158                                 &m_env,
3159                                 player,
3160                                 privs);
3161
3162                         std::wstring reply(processServerCommand(ctx));
3163                         send_to_sender = ctx->flags & SEND_TO_SENDER;
3164                         send_to_others = ctx->flags & SEND_TO_OTHERS;
3165
3166                         if (ctx->flags & SEND_NO_PREFIX)
3167                                 line += reply;
3168                         else
3169                                 line += L"Server: " + reply;
3170
3171                         delete ctx;
3172
3173                 }
3174                 else
3175                 {
3176                         if(privs & PRIV_SHOUT)
3177                         {
3178                                 line += L"<";
3179                                 line += name;
3180                                 line += L"> ";
3181                                 line += message;
3182                                 send_to_others = true;
3183                         }
3184                         else
3185                         {
3186                                 line += L"Server: You are not allowed to shout";
3187                                 send_to_sender = true;
3188                         }
3189                 }
3190
3191                 if(line != L"")
3192                 {
3193                         if(send_to_others)
3194                                 actionstream<<"CHAT: "<<wide_to_narrow(line)<<std::endl;
3195
3196                         /*
3197                                 Send the message to clients
3198                         */
3199                         for(core::map<u16, RemoteClient*>::Iterator
3200                                 i = m_clients.getIterator();
3201                                 i.atEnd() == false; i++)
3202                         {
3203                                 // Get client and check that it is valid
3204                                 RemoteClient *client = i.getNode()->getValue();
3205                                 assert(client->peer_id == i.getNode()->getKey());
3206                                 if(client->serialization_version == SER_FMT_VER_INVALID)
3207                                         continue;
3208
3209                                 // Filter recipient
3210                                 bool sender_selected = (peer_id == client->peer_id);
3211                                 if(sender_selected == true && send_to_sender == false)
3212                                         continue;
3213                                 if(sender_selected == false && send_to_others == false)
3214                                         continue;
3215
3216                                 SendChatMessage(client->peer_id, line);
3217                         }
3218                 }
3219         }
3220         else if(command == TOSERVER_DAMAGE)
3221         {
3222                 std::string datastring((char*)&data[2], datasize-2);
3223                 std::istringstream is(datastring, std::ios_base::binary);
3224                 u8 damage = readU8(is);
3225
3226                 if(g_settings->getBool("enable_damage"))
3227                 {
3228                         actionstream<<player->getName()<<" damaged by "
3229                                         <<(int)damage<<" hp at "<<PP(player->getPosition()/BS)
3230                                         <<std::endl;
3231
3232                         HandlePlayerHP(player, damage);
3233                 }
3234                 else
3235                 {
3236                         SendPlayerHP(player);
3237                 }
3238         }
3239         else if(command == TOSERVER_PASSWORD)
3240         {
3241                 /*
3242                         [0] u16 TOSERVER_PASSWORD
3243                         [2] u8[28] old password
3244                         [30] u8[28] new password
3245                 */
3246
3247                 if(datasize != 2+PASSWORD_SIZE*2)
3248                         return;
3249                 /*char password[PASSWORD_SIZE];
3250                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3251                         password[i] = data[2+i];
3252                 password[PASSWORD_SIZE-1] = 0;*/
3253                 std::string oldpwd;
3254                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3255                 {
3256                         char c = data[2+i];
3257                         if(c == 0)
3258                                 break;
3259                         oldpwd += c;
3260                 }
3261                 std::string newpwd;
3262                 for(u32 i=0; i<PASSWORD_SIZE-1; i++)
3263                 {
3264                         char c = data[2+PASSWORD_SIZE+i];
3265                         if(c == 0)
3266                                 break;
3267                         newpwd += c;
3268                 }
3269
3270                 infostream<<"Server: Client requests a password change from "
3271                                 <<"'"<<oldpwd<<"' to '"<<newpwd<<"'"<<std::endl;
3272
3273                 std::string playername = player->getName();
3274
3275                 if(m_authmanager.exists(playername) == false)
3276                 {
3277                         infostream<<"Server: playername not found in authmanager"<<std::endl;
3278                         // Wrong old password supplied!!
3279                         SendChatMessage(peer_id, L"playername not found in authmanager");
3280                         return;
3281                 }
3282
3283                 std::string checkpwd = m_authmanager.getPassword(playername);
3284
3285                 if(oldpwd != checkpwd)
3286                 {
3287                         infostream<<"Server: invalid old password"<<std::endl;
3288                         // Wrong old password supplied!!
3289                         SendChatMessage(peer_id, L"Invalid old password supplied. Password NOT changed.");
3290                         return;
3291                 }
3292
3293                 actionstream<<player->getName()<<" changes password"<<std::endl;
3294
3295                 m_authmanager.setPassword(playername, newpwd);
3296
3297                 infostream<<"Server: password change successful for "<<playername
3298                                 <<std::endl;
3299                 SendChatMessage(peer_id, L"Password change successful");
3300         }
3301         else if(command == TOSERVER_PLAYERITEM)
3302         {
3303                 if (datasize < 2+2)
3304                         return;
3305
3306                 u16 item = readU16(&data[2]);
3307                 player->wieldItem(item);
3308                 SendWieldedItem(player);
3309         }
3310         else if(command == TOSERVER_RESPAWN)
3311         {
3312                 if(player->hp != 0)
3313                         return;
3314
3315                 RespawnPlayer(player);
3316
3317                 actionstream<<player->getName()<<" respawns at "
3318                                 <<PP(player->getPosition()/BS)<<std::endl;
3319         }
3320         else
3321         {
3322                 infostream<<"Server::ProcessData(): Ignoring "
3323                                 "unknown command "<<command<<std::endl;
3324         }
3325
3326         } //try
3327         catch(SendFailedException &e)
3328         {
3329                 errorstream<<"Server::ProcessData(): SendFailedException: "
3330                                 <<"what="<<e.what()
3331                                 <<std::endl;
3332         }
3333 }
3334
3335 void Server::onMapEditEvent(MapEditEvent *event)
3336 {
3337         //infostream<<"Server::onMapEditEvent()"<<std::endl;
3338         if(m_ignore_map_edit_events)
3339                 return;
3340         MapEditEvent *e = event->clone();
3341         m_unsent_map_edit_queue.push_back(e);
3342 }
3343
3344 Inventory* Server::getInventory(InventoryContext *c, std::string id)
3345 {
3346         if(id == "current_player")
3347         {
3348                 assert(c->current_player);
3349                 return &(c->current_player->inventory);
3350         }
3351
3352         Strfnd fn(id);
3353         std::string id0 = fn.next(":");
3354
3355         if(id0 == "nodemeta")
3356         {
3357                 v3s16 p;
3358                 p.X = stoi(fn.next(","));
3359                 p.Y = stoi(fn.next(","));
3360                 p.Z = stoi(fn.next(","));
3361                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3362                 if(meta)
3363                         return meta->getInventory();
3364                 infostream<<"nodemeta at ("<<p.X<<","<<p.Y<<","<<p.Z<<"): "
3365                                 <<"no metadata found"<<std::endl;
3366                 return NULL;
3367         }
3368
3369         infostream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3370         return NULL;
3371 }
3372 void Server::inventoryModified(InventoryContext *c, std::string id)
3373 {
3374         if(id == "current_player")
3375         {
3376                 assert(c->current_player);
3377                 // Send inventory
3378                 UpdateCrafting(c->current_player->peer_id);
3379                 SendInventory(c->current_player->peer_id);
3380                 return;
3381         }
3382
3383         Strfnd fn(id);
3384         std::string id0 = fn.next(":");
3385
3386         if(id0 == "nodemeta")
3387         {
3388                 v3s16 p;
3389                 p.X = stoi(fn.next(","));
3390                 p.Y = stoi(fn.next(","));
3391                 p.Z = stoi(fn.next(","));
3392                 v3s16 blockpos = getNodeBlockPos(p);
3393
3394                 NodeMetadata *meta = m_env.getMap().getNodeMetadata(p);
3395                 if(meta)
3396                         meta->inventoryModified();
3397
3398                 for(core::map<u16, RemoteClient*>::Iterator
3399                         i = m_clients.getIterator();
3400                         i.atEnd()==false; i++)
3401                 {
3402                         RemoteClient *client = i.getNode()->getValue();
3403                         client->SetBlockNotSent(blockpos);
3404                 }
3405
3406                 return;
3407         }
3408
3409         infostream<<__FUNCTION_NAME<<": unknown id "<<id<<std::endl;
3410 }
3411
3412 core::list<PlayerInfo> Server::getPlayerInfo()
3413 {
3414         DSTACK(__FUNCTION_NAME);
3415         JMutexAutoLock envlock(m_env_mutex);
3416         JMutexAutoLock conlock(m_con_mutex);
3417
3418         core::list<PlayerInfo> list;
3419
3420         core::list<Player*> players = m_env.getPlayers();
3421
3422         core::list<Player*>::Iterator i;
3423         for(i = players.begin();
3424                         i != players.end(); i++)
3425         {
3426                 PlayerInfo info;
3427
3428                 Player *player = *i;
3429
3430                 try{
3431                         con::Peer *peer = m_con.GetPeer(player->peer_id);
3432                         // Copy info from peer to info struct
3433                         info.id = peer->id;
3434                         info.address = peer->address;
3435                         info.avg_rtt = peer->avg_rtt;
3436                 }
3437                 catch(con::PeerNotFoundException &e)
3438                 {
3439                         // Set dummy peer info
3440                         info.id = 0;
3441                         info.address = Address(0,0,0,0,0);
3442                         info.avg_rtt = 0.0;
3443                 }
3444
3445                 snprintf(info.name, PLAYERNAME_SIZE, "%s", player->getName());
3446                 info.position = player->getPosition();
3447
3448                 list.push_back(info);
3449         }
3450
3451         return list;
3452 }
3453
3454
3455 void Server::peerAdded(con::Peer *peer)
3456 {
3457         DSTACK(__FUNCTION_NAME);
3458         infostream<<"Server::peerAdded(): peer->id="
3459                         <<peer->id<<std::endl;
3460
3461         PeerChange c;
3462         c.type = PEER_ADDED;
3463         c.peer_id = peer->id;
3464         c.timeout = false;
3465         m_peer_change_queue.push_back(c);
3466 }
3467
3468 void Server::deletingPeer(con::Peer *peer, bool timeout)
3469 {
3470         DSTACK(__FUNCTION_NAME);
3471         infostream<<"Server::deletingPeer(): peer->id="
3472                         <<peer->id<<", timeout="<<timeout<<std::endl;
3473
3474         PeerChange c;
3475         c.type = PEER_REMOVED;
3476         c.peer_id = peer->id;
3477         c.timeout = timeout;
3478         m_peer_change_queue.push_back(c);
3479 }
3480
3481 /*
3482         Static send methods
3483 */
3484
3485 void Server::SendHP(con::Connection &con, u16 peer_id, u8 hp)
3486 {
3487         DSTACK(__FUNCTION_NAME);
3488         std::ostringstream os(std::ios_base::binary);
3489
3490         writeU16(os, TOCLIENT_HP);
3491         writeU8(os, hp);
3492
3493         // Make data buffer
3494         std::string s = os.str();
3495         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3496         // Send as reliable
3497         con.Send(peer_id, 0, data, true);
3498 }
3499
3500 void Server::SendAccessDenied(con::Connection &con, u16 peer_id,
3501                 const std::wstring &reason)
3502 {
3503         DSTACK(__FUNCTION_NAME);
3504         std::ostringstream os(std::ios_base::binary);
3505
3506         writeU16(os, TOCLIENT_ACCESS_DENIED);
3507         os<<serializeWideString(reason);
3508
3509         // Make data buffer
3510         std::string s = os.str();
3511         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3512         // Send as reliable
3513         con.Send(peer_id, 0, data, true);
3514 }
3515
3516 void Server::SendDeathscreen(con::Connection &con, u16 peer_id,
3517                 bool set_camera_point_target, v3f camera_point_target)
3518 {
3519         DSTACK(__FUNCTION_NAME);
3520         std::ostringstream os(std::ios_base::binary);
3521
3522         writeU16(os, TOCLIENT_DEATHSCREEN);
3523         writeU8(os, set_camera_point_target);
3524         writeV3F1000(os, camera_point_target);
3525
3526         // Make data buffer
3527         std::string s = os.str();
3528         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3529         // Send as reliable
3530         con.Send(peer_id, 0, data, true);
3531 }
3532
3533 /*
3534         Non-static send methods
3535 */
3536
3537 void Server::SendObjectData(float dtime)
3538 {
3539         DSTACK(__FUNCTION_NAME);
3540
3541         core::map<v3s16, bool> stepped_blocks;
3542
3543         for(core::map<u16, RemoteClient*>::Iterator
3544                 i = m_clients.getIterator();
3545                 i.atEnd() == false; i++)
3546         {
3547                 u16 peer_id = i.getNode()->getKey();
3548                 RemoteClient *client = i.getNode()->getValue();
3549                 assert(client->peer_id == peer_id);
3550
3551                 if(client->serialization_version == SER_FMT_VER_INVALID)
3552                         continue;
3553
3554                 client->SendObjectData(this, dtime, stepped_blocks);
3555         }
3556 }
3557
3558 void Server::SendPlayerInfos()
3559 {
3560         DSTACK(__FUNCTION_NAME);
3561
3562         //JMutexAutoLock envlock(m_env_mutex);
3563
3564         // Get connected players
3565         core::list<Player*> players = m_env.getPlayers(true);
3566
3567         u32 player_count = players.getSize();
3568         u32 datasize = 2+(2+PLAYERNAME_SIZE)*player_count;
3569
3570         SharedBuffer<u8> data(datasize);
3571         writeU16(&data[0], TOCLIENT_PLAYERINFO);
3572
3573         u32 start = 2;
3574         core::list<Player*>::Iterator i;
3575         for(i = players.begin();
3576                         i != players.end(); i++)
3577         {
3578                 Player *player = *i;
3579
3580                 /*infostream<<"Server sending player info for player with "
3581                                 "peer_id="<<player->peer_id<<std::endl;*/
3582
3583                 writeU16(&data[start], player->peer_id);
3584                 memset((char*)&data[start+2], 0, PLAYERNAME_SIZE);
3585                 snprintf((char*)&data[start+2], PLAYERNAME_SIZE, "%s", player->getName());
3586                 start += 2+PLAYERNAME_SIZE;
3587         }
3588
3589         //JMutexAutoLock conlock(m_con_mutex);
3590
3591         // Send as reliable
3592         m_con.SendToAll(0, data, true);
3593 }
3594
3595 void Server::SendInventory(u16 peer_id)
3596 {
3597         DSTACK(__FUNCTION_NAME);
3598
3599         Player* player = m_env.getPlayer(peer_id);
3600         assert(player);
3601
3602         /*
3603                 Serialize it
3604         */
3605
3606         std::ostringstream os;
3607         //os.imbue(std::locale("C"));
3608
3609         player->inventory.serialize(os);
3610
3611         std::string s = os.str();
3612
3613         SharedBuffer<u8> data(s.size()+2);
3614         writeU16(&data[0], TOCLIENT_INVENTORY);
3615         memcpy(&data[2], s.c_str(), s.size());
3616
3617         // Send as reliable
3618         m_con.Send(peer_id, 0, data, true);
3619 }
3620
3621 std::string getWieldedItemString(const Player *player)
3622 {
3623         const InventoryItem *item = player->getWieldItem();
3624         if (item == NULL)
3625                 return std::string("");
3626         std::ostringstream os(std::ios_base::binary);
3627         item->serialize(os);
3628         return os.str();
3629 }
3630
3631 void Server::SendWieldedItem(const Player* player)
3632 {
3633         DSTACK(__FUNCTION_NAME);
3634
3635         assert(player);
3636
3637         std::ostringstream os(std::ios_base::binary);
3638
3639         writeU16(os, TOCLIENT_PLAYERITEM);
3640         writeU16(os, 1);
3641         writeU16(os, player->peer_id);
3642         os<<serializeString(getWieldedItemString(player));
3643
3644         // Make data buffer
3645         std::string s = os.str();
3646         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3647
3648         m_con.SendToAll(0, data, true);
3649 }
3650
3651 void Server::SendPlayerItems()
3652 {
3653         DSTACK(__FUNCTION_NAME);
3654
3655         std::ostringstream os(std::ios_base::binary);
3656         core::list<Player *> players = m_env.getPlayers(true);
3657
3658         writeU16(os, TOCLIENT_PLAYERITEM);
3659         writeU16(os, players.size());
3660         core::list<Player *>::Iterator i;
3661         for(i = players.begin(); i != players.end(); ++i)
3662         {
3663                 Player *p = *i;
3664                 writeU16(os, p->peer_id);
3665                 os<<serializeString(getWieldedItemString(p));
3666         }
3667
3668         // Make data buffer
3669         std::string s = os.str();
3670         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3671
3672         m_con.SendToAll(0, data, true);
3673 }
3674
3675 void Server::SendChatMessage(u16 peer_id, const std::wstring &message)
3676 {
3677         DSTACK(__FUNCTION_NAME);
3678
3679         std::ostringstream os(std::ios_base::binary);
3680         u8 buf[12];
3681
3682         // Write command
3683         writeU16(buf, TOCLIENT_CHAT_MESSAGE);
3684         os.write((char*)buf, 2);
3685
3686         // Write length
3687         writeU16(buf, message.size());
3688         os.write((char*)buf, 2);
3689
3690         // Write string
3691         for(u32 i=0; i<message.size(); i++)
3692         {
3693                 u16 w = message[i];
3694                 writeU16(buf, w);
3695                 os.write((char*)buf, 2);
3696         }
3697
3698         // Make data buffer
3699         std::string s = os.str();
3700         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3701         // Send as reliable
3702         m_con.Send(peer_id, 0, data, true);
3703 }
3704
3705 void Server::BroadcastChatMessage(const std::wstring &message)
3706 {
3707         for(core::map<u16, RemoteClient*>::Iterator
3708                 i = m_clients.getIterator();
3709                 i.atEnd() == false; i++)
3710         {
3711                 // Get client and check that it is valid
3712                 RemoteClient *client = i.getNode()->getValue();
3713                 assert(client->peer_id == i.getNode()->getKey());
3714                 if(client->serialization_version == SER_FMT_VER_INVALID)
3715                         continue;
3716
3717                 SendChatMessage(client->peer_id, message);
3718         }
3719 }
3720
3721 void Server::SendPlayerHP(Player *player)
3722 {
3723         SendHP(m_con, player->peer_id, player->hp);
3724 }
3725
3726 void Server::SendMovePlayer(Player *player)
3727 {
3728         DSTACK(__FUNCTION_NAME);
3729         std::ostringstream os(std::ios_base::binary);
3730
3731         writeU16(os, TOCLIENT_MOVE_PLAYER);
3732         writeV3F1000(os, player->getPosition());
3733         writeF1000(os, player->getPitch());
3734         writeF1000(os, player->getYaw());
3735
3736         {
3737                 v3f pos = player->getPosition();
3738                 f32 pitch = player->getPitch();
3739                 f32 yaw = player->getYaw();
3740                 infostream<<"Server sending TOCLIENT_MOVE_PLAYER"
3741                                 <<" pos=("<<pos.X<<","<<pos.Y<<","<<pos.Z<<")"
3742                                 <<" pitch="<<pitch
3743                                 <<" yaw="<<yaw
3744                                 <<std::endl;
3745         }
3746
3747         // Make data buffer
3748         std::string s = os.str();
3749         SharedBuffer<u8> data((u8*)s.c_str(), s.size());
3750         // Send as reliable
3751         m_con.Send(player->peer_id, 0, data, true);
3752 }
3753
3754 void Server::sendRemoveNode(v3s16 p, u16 ignore_id,
3755         core::list<u16> *far_players, float far_d_nodes)
3756 {
3757         float maxd = far_d_nodes*BS;
3758         v3f p_f = intToFloat(p, BS);
3759
3760         // Create packet
3761         u32 replysize = 8;
3762         SharedBuffer<u8> reply(replysize);
3763         writeU16(&reply[0], TOCLIENT_REMOVENODE);
3764         writeS16(&reply[2], p.X);
3765         writeS16(&reply[4], p.Y);
3766         writeS16(&reply[6], p.Z);
3767
3768         for(core::map<u16, RemoteClient*>::Iterator
3769                 i = m_clients.getIterator();
3770                 i.atEnd() == false; i++)
3771         {
3772                 // Get client and check that it is valid
3773                 RemoteClient *client = i.getNode()->getValue();
3774                 assert(client->peer_id == i.getNode()->getKey());
3775                 if(client->serialization_version == SER_FMT_VER_INVALID)
3776                         continue;
3777
3778                 // Don't send if it's the same one
3779                 if(client->peer_id == ignore_id)
3780                         continue;
3781
3782                 if(far_players)
3783                 {
3784                         // Get player
3785                         Player *player = m_env.getPlayer(client->peer_id);
3786                         if(player)
3787                         {
3788                                 // If player is far away, only set modified blocks not sent
3789                                 v3f player_pos = player->getPosition();
3790                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3791                                 {
3792                                         far_players->push_back(client->peer_id);
3793                                         continue;
3794                                 }
3795                         }
3796                 }
3797
3798                 // Send as reliable
3799                 m_con.Send(client->peer_id, 0, reply, true);
3800         }
3801 }
3802
3803 void Server::sendAddNode(v3s16 p, MapNode n, u16 ignore_id,
3804                 core::list<u16> *far_players, float far_d_nodes)
3805 {
3806         float maxd = far_d_nodes*BS;
3807         v3f p_f = intToFloat(p, BS);
3808
3809         for(core::map<u16, RemoteClient*>::Iterator
3810                 i = m_clients.getIterator();
3811                 i.atEnd() == false; i++)
3812         {
3813                 // Get client and check that it is valid
3814                 RemoteClient *client = i.getNode()->getValue();
3815                 assert(client->peer_id == i.getNode()->getKey());
3816                 if(client->serialization_version == SER_FMT_VER_INVALID)
3817                         continue;
3818
3819                 // Don't send if it's the same one
3820                 if(client->peer_id == ignore_id)
3821                         continue;
3822
3823                 if(far_players)
3824                 {
3825                         // Get player
3826                         Player *player = m_env.getPlayer(client->peer_id);
3827                         if(player)
3828                         {
3829                                 // If player is far away, only set modified blocks not sent
3830                                 v3f player_pos = player->getPosition();
3831                                 if(player_pos.getDistanceFrom(p_f) > maxd)
3832                                 {
3833                                         far_players->push_back(client->peer_id);
3834                                         continue;
3835                                 }
3836                         }
3837                 }
3838
3839                 // Create packet
3840                 u32 replysize = 8 + MapNode::serializedLength(client->serialization_version);
3841                 SharedBuffer<u8> reply(replysize);
3842                 writeU16(&reply[0], TOCLIENT_ADDNODE);
3843                 writeS16(&reply[2], p.X);
3844                 writeS16(&reply[4], p.Y);
3845                 writeS16(&reply[6], p.Z);
3846                 n.serialize(&reply[8], client->serialization_version);
3847
3848                 // Send as reliable
3849                 m_con.Send(client->peer_id, 0, reply, true);
3850         }
3851 }
3852
3853 void Server::setBlockNotSent(v3s16 p)
3854 {
3855         for(core::map<u16, RemoteClient*>::Iterator
3856                 i = m_clients.getIterator();
3857                 i.atEnd()==false; i++)
3858         {
3859                 RemoteClient *client = i.getNode()->getValue();
3860                 client->SetBlockNotSent(p);
3861         }
3862 }
3863
3864 void Server::SendBlockNoLock(u16 peer_id, MapBlock *block, u8 ver)
3865 {
3866         DSTACK(__FUNCTION_NAME);
3867
3868         v3s16 p = block->getPos();
3869
3870 #if 0
3871         // Analyze it a bit
3872         bool completely_air = true;
3873         for(s16 z0=0; z0<MAP_BLOCKSIZE; z0++)
3874         for(s16 x0=0; x0<MAP_BLOCKSIZE; x0++)
3875         for(s16 y0=0; y0<MAP_BLOCKSIZE; y0++)
3876         {
3877                 if(block->getNodeNoEx(v3s16(x0,y0,z0)).d != CONTENT_AIR)
3878                 {
3879                         completely_air = false;
3880                         x0 = y0 = z0 = MAP_BLOCKSIZE; // Break out
3881                 }
3882         }
3883
3884         // Print result
3885         infostream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<"): ";
3886         if(completely_air)
3887                 infostream<<"[completely air] ";
3888         infostream<<std::endl;
3889 #endif
3890
3891         /*
3892                 Create a packet with the block in the right format
3893         */
3894
3895         std::ostringstream os(std::ios_base::binary);
3896         block->serialize(os, ver);
3897         std::string s = os.str();
3898         SharedBuffer<u8> blockdata((u8*)s.c_str(), s.size());
3899
3900         u32 replysize = 8 + blockdata.getSize();
3901         SharedBuffer<u8> reply(replysize);
3902         writeU16(&reply[0], TOCLIENT_BLOCKDATA);
3903         writeS16(&reply[2], p.X);
3904         writeS16(&reply[4], p.Y);
3905         writeS16(&reply[6], p.Z);
3906         memcpy(&reply[8], *blockdata, blockdata.getSize());
3907
3908         /*infostream<<"Server: Sending block ("<<p.X<<","<<p.Y<<","<<p.Z<<")"
3909                         <<":  \tpacket size: "<<replysize<<std::endl;*/
3910
3911         /*
3912                 Send packet
3913         */
3914         m_con.Send(peer_id, 1, reply, true);
3915 }
3916
3917 void Server::SendBlocks(float dtime)
3918 {
3919         DSTACK(__FUNCTION_NAME);
3920
3921         JMutexAutoLock envlock(m_env_mutex);
3922         JMutexAutoLock conlock(m_con_mutex);
3923
3924         //TimeTaker timer("Server::SendBlocks");
3925
3926         core::array<PrioritySortedBlockTransfer> queue;
3927
3928         s32 total_sending = 0;
3929
3930         {
3931                 ScopeProfiler sp(g_profiler, "Server: selecting blocks for sending");
3932
3933                 for(core::map<u16, RemoteClient*>::Iterator
3934                         i = m_clients.getIterator();
3935                         i.atEnd() == false; i++)
3936                 {
3937                         RemoteClient *client = i.getNode()->getValue();
3938                         assert(client->peer_id == i.getNode()->getKey());
3939
3940                         total_sending += client->SendingCount();
3941
3942                         if(client->serialization_version == SER_FMT_VER_INVALID)
3943                                 continue;
3944
3945                         client->GetNextBlocks(this, dtime, queue);
3946                 }
3947         }
3948
3949         // Sort.
3950         // Lowest priority number comes first.
3951         // Lowest is most important.
3952         queue.sort();
3953
3954         for(u32 i=0; i<queue.size(); i++)
3955         {
3956                 //TODO: Calculate limit dynamically
3957                 if(total_sending >= g_settings->getS32
3958                                 ("max_simultaneous_block_sends_server_total"))
3959                         break;
3960
3961                 PrioritySortedBlockTransfer q = queue[i];
3962
3963                 MapBlock *block = NULL;
3964                 try
3965                 {
3966                         block = m_env.getMap().getBlockNoCreate(q.pos);
3967                 }
3968                 catch(InvalidPositionException &e)
3969                 {
3970                         continue;
3971                 }
3972
3973                 RemoteClient *client = getClient(q.peer_id);
3974
3975                 SendBlockNoLock(q.peer_id, block, client->serialization_version);
3976
3977                 client->SentBlock(q.pos);
3978
3979                 total_sending++;
3980         }
3981 }
3982
3983 /*
3984         Something random
3985 */
3986
3987 void Server::HandlePlayerHP(Player *player, s16 damage)
3988 {
3989         if(player->hp > damage)
3990         {
3991                 player->hp -= damage;
3992                 SendPlayerHP(player);
3993         }
3994         else
3995         {
3996                 infostream<<"Server::HandlePlayerHP(): Player "
3997                                 <<player->getName()<<" dies"<<std::endl;
3998
3999                 player->hp = 0;
4000
4001                 //TODO: Throw items around
4002
4003                 // Handle players that are not connected
4004                 if(player->peer_id == PEER_ID_INEXISTENT){
4005                         RespawnPlayer(player);
4006                         return;
4007                 }
4008
4009                 SendPlayerHP(player);
4010
4011                 RemoteClient *client = getClient(player->peer_id);
4012                 if(client->net_proto_version >= 3)
4013                 {
4014                         SendDeathscreen(m_con, player->peer_id, false, v3f(0,0,0));
4015                 }
4016                 else
4017                 {
4018                         RespawnPlayer(player);
4019                 }
4020         }
4021 }
4022
4023 void Server::RespawnPlayer(Player *player)
4024 {
4025         v3f pos = findSpawnPos(m_env.getServerMap());
4026         player->setPosition(pos);
4027         player->hp = 20;
4028         SendMovePlayer(player);
4029         SendPlayerHP(player);
4030 }
4031
4032 void Server::UpdateCrafting(u16 peer_id)
4033 {
4034         DSTACK(__FUNCTION_NAME);
4035
4036         Player* player = m_env.getPlayer(peer_id);
4037         assert(player);
4038
4039         /*
4040                 Calculate crafting stuff
4041         */
4042         if(g_settings->getBool("creative_mode") == false)
4043         {
4044                 InventoryList *clist = player->inventory.getList("craft");
4045                 InventoryList *rlist = player->inventory.getList("craftresult");
4046
4047                 if(rlist && rlist->getUsedSlots() == 0)
4048                         player->craftresult_is_preview = true;
4049
4050                 if(rlist && player->craftresult_is_preview)
4051                 {
4052                         rlist->clearItems();
4053                 }
4054                 if(clist && rlist && player->craftresult_is_preview)
4055                 {
4056                         InventoryItem *items[9];
4057                         for(u16 i=0; i<9; i++)
4058                         {
4059                                 items[i] = clist->getItem(i);
4060                         }
4061
4062                         // Get result of crafting grid
4063                         InventoryItem *result = craft_get_result(items);
4064                         if(result)
4065                                 rlist->addItem(result);
4066                 }
4067
4068         } // if creative_mode == false
4069 }
4070
4071 RemoteClient* Server::getClient(u16 peer_id)
4072 {
4073         DSTACK(__FUNCTION_NAME);
4074         //JMutexAutoLock lock(m_con_mutex);
4075         core::map<u16, RemoteClient*>::Node *n;
4076         n = m_clients.find(peer_id);
4077         // A client should exist for all peers
4078         assert(n != NULL);
4079         return n->getValue();
4080 }
4081
4082 std::wstring Server::getStatusString()
4083 {
4084         std::wostringstream os(std::ios_base::binary);
4085         os<<L"# Server: ";
4086         // Version
4087         os<<L"version="<<narrow_to_wide(VERSION_STRING);
4088         // Uptime
4089         os<<L", uptime="<<m_uptime.get();
4090         // Information about clients
4091         os<<L", clients={";
4092         for(core::map<u16, RemoteClient*>::Iterator
4093                 i = m_clients.getIterator();
4094                 i.atEnd() == false; i++)
4095         {
4096                 // Get client and check that it is valid
4097                 RemoteClient *client = i.getNode()->getValue();
4098                 assert(client->peer_id == i.getNode()->getKey());
4099                 if(client->serialization_version == SER_FMT_VER_INVALID)
4100                         continue;
4101                 // Get player
4102                 Player *player = m_env.getPlayer(client->peer_id);
4103                 // Get name of player
4104                 std::wstring name = L"unknown";
4105                 if(player != NULL)
4106                         name = narrow_to_wide(player->getName());
4107                 // Add name to information string
4108                 os<<name<<L",";
4109         }
4110         os<<L"}";
4111         if(((ServerMap*)(&m_env.getMap()))->isSavingEnabled() == false)
4112                 os<<std::endl<<L"# Server: "<<" WARNING: Map saving is disabled.";
4113         if(g_settings->get("motd") != "")
4114                 os<<std::endl<<L"# Server: "<<narrow_to_wide(g_settings->get("motd"));
4115         return os.str();
4116 }
4117
4118 // Saves g_settings to configpath given at initialization
4119 void Server::saveConfig()
4120 {
4121         if(m_configpath != "")
4122                 g_settings->updateConfigFile(m_configpath.c_str());
4123 }
4124
4125 void Server::notifyPlayer(const char *name, const std::wstring msg)
4126 {
4127         Player *player = m_env.getPlayer(name);
4128         if(!player)
4129                 return;
4130         SendChatMessage(player->peer_id, std::wstring(L"Server: -!- ")+msg);
4131 }
4132
4133 void Server::notifyPlayers(const std::wstring msg)
4134 {
4135         BroadcastChatMessage(msg);
4136 }
4137
4138 v3f findSpawnPos(ServerMap &map)
4139 {
4140         //return v3f(50,50,50)*BS;
4141
4142         v2s16 nodepos;
4143         s16 groundheight = 0;
4144
4145 #if 0
4146         nodepos = v2s16(0,0);
4147         groundheight = 20;
4148 #endif
4149
4150 #if 1
4151         // Try to find a good place a few times
4152         for(s32 i=0; i<1000; i++)
4153         {
4154                 s32 range = 1 + i;
4155                 // We're going to try to throw the player to this position
4156                 nodepos = v2s16(-range + (myrand()%(range*2)),
4157                                 -range + (myrand()%(range*2)));
4158                 v2s16 sectorpos = getNodeSectorPos(nodepos);
4159                 // Get sector (NOTE: Don't get because it's slow)
4160                 //m_env.getMap().emergeSector(sectorpos);
4161                 // Get ground height at point (fallbacks to heightmap function)
4162                 groundheight = map.findGroundLevel(nodepos);
4163                 // Don't go underwater
4164                 if(groundheight < WATER_LEVEL)
4165                 {
4166                         //infostream<<"-> Underwater"<<std::endl;
4167                         continue;
4168                 }
4169                 // Don't go to high places
4170                 if(groundheight > WATER_LEVEL + 4)
4171                 {
4172                         //infostream<<"-> Underwater"<<std::endl;
4173                         continue;
4174                 }
4175
4176                 // Found a good place
4177                 //infostream<<"Searched through "<<i<<" places."<<std::endl;
4178                 break;
4179         }
4180 #endif
4181
4182         // If no suitable place was not found, go above water at least.
4183         if(groundheight < WATER_LEVEL)
4184                 groundheight = WATER_LEVEL;
4185
4186         return intToFloat(v3s16(
4187                         nodepos.X,
4188                         groundheight + 3,
4189                         nodepos.Y
4190                         ), BS);
4191 }
4192
4193 Player *Server::emergePlayer(const char *name, const char *password, u16 peer_id)
4194 {
4195         /*
4196                 Try to get an existing player
4197         */
4198         Player *player = m_env.getPlayer(name);
4199         if(player != NULL)
4200         {
4201                 // If player is already connected, cancel
4202                 if(player->peer_id != 0)
4203                 {
4204                         infostream<<"emergePlayer(): Player already connected"<<std::endl;
4205                         return NULL;
4206                 }
4207
4208                 // Got one.
4209                 player->peer_id = peer_id;
4210
4211                 // Reset inventory to creative if in creative mode
4212                 if(g_settings->getBool("creative_mode"))
4213                 {
4214                         // Warning: double code below
4215                         // Backup actual inventory
4216                         player->inventory_backup = new Inventory();
4217                         *(player->inventory_backup) = player->inventory;
4218                         // Set creative inventory
4219                         craft_set_creative_inventory(player);
4220                 }
4221
4222                 return player;
4223         }
4224
4225         /*
4226                 If player with the wanted peer_id already exists, cancel.
4227         */
4228         if(m_env.getPlayer(peer_id) != NULL)
4229         {
4230                 infostream<<"emergePlayer(): Player with wrong name but same"
4231                                 " peer_id already exists"<<std::endl;
4232                 return NULL;
4233         }
4234
4235         /*
4236                 Create a new player
4237         */
4238         {
4239                 player = new ServerRemotePlayer();
4240                 //player->peer_id = c.peer_id;
4241                 //player->peer_id = PEER_ID_INEXISTENT;
4242                 player->peer_id = peer_id;
4243                 player->updateName(name);
4244                 m_authmanager.add(name);
4245                 m_authmanager.setPassword(name, password);
4246                 m_authmanager.setPrivs(name,
4247                                 stringToPrivs(g_settings->get("default_privs")));
4248
4249                 /*
4250                         Set player position
4251                 */
4252
4253                 infostream<<"Server: Finding spawn place for player \""
4254                                 <<player->getName()<<"\""<<std::endl;
4255
4256                 v3f pos = findSpawnPos(m_env.getServerMap());
4257
4258                 player->setPosition(pos);
4259
4260                 /*
4261                         Add player to environment
4262                 */
4263
4264                 m_env.addPlayer(player);
4265
4266                 /*
4267                         Add stuff to inventory
4268                 */
4269
4270                 if(g_settings->getBool("creative_mode"))
4271                 {
4272                         // Warning: double code above
4273                         // Backup actual inventory
4274                         player->inventory_backup = new Inventory();
4275                         *(player->inventory_backup) = player->inventory;
4276                         // Set creative inventory
4277                         craft_set_creative_inventory(player);
4278                 }
4279                 else if(g_settings->getBool("give_initial_stuff"))
4280                 {
4281                         craft_give_initial_stuff(player);
4282                 }
4283
4284                 return player;
4285
4286         } // create new player
4287 }
4288
4289 void Server::handlePeerChange(PeerChange &c)
4290 {
4291         JMutexAutoLock envlock(m_env_mutex);
4292         JMutexAutoLock conlock(m_con_mutex);
4293
4294         if(c.type == PEER_ADDED)
4295         {
4296                 /*
4297                         Add
4298                 */
4299
4300                 // Error check
4301                 core::map<u16, RemoteClient*>::Node *n;
4302                 n = m_clients.find(c.peer_id);
4303                 // The client shouldn't already exist
4304                 assert(n == NULL);
4305
4306                 // Create client
4307                 RemoteClient *client = new RemoteClient();
4308                 client->peer_id = c.peer_id;
4309                 m_clients.insert(client->peer_id, client);
4310
4311         } // PEER_ADDED
4312         else if(c.type == PEER_REMOVED)
4313         {
4314                 /*
4315                         Delete
4316                 */
4317
4318                 // Error check
4319                 core::map<u16, RemoteClient*>::Node *n;
4320                 n = m_clients.find(c.peer_id);
4321                 // The client should exist
4322                 assert(n != NULL);
4323
4324                 /*
4325                         Mark objects to be not known by the client
4326                 */
4327                 RemoteClient *client = n->getValue();
4328                 // Handle objects
4329                 for(core::map<u16, bool>::Iterator
4330                                 i = client->m_known_objects.getIterator();
4331                                 i.atEnd()==false; i++)
4332                 {
4333                         // Get object
4334                         u16 id = i.getNode()->getKey();
4335                         ServerActiveObject* obj = m_env.getActiveObject(id);
4336
4337                         if(obj && obj->m_known_by_count > 0)
4338                                 obj->m_known_by_count--;
4339                 }
4340
4341                 // Collect information about leaving in chat
4342                 std::wstring message;
4343                 {
4344                         Player *player = m_env.getPlayer(c.peer_id);
4345                         if(player != NULL)
4346                         {
4347                                 std::wstring name = narrow_to_wide(player->getName());
4348                                 message += L"*** ";
4349                                 message += name;
4350                                 message += L" left game";
4351                                 if(c.timeout)
4352                                         message += L" (timed out)";
4353                         }
4354                 }
4355
4356                 /*// Delete player
4357                 {
4358                         m_env.removePlayer(c.peer_id);
4359                 }*/
4360
4361                 // Set player client disconnected
4362                 {
4363                         Player *player = m_env.getPlayer(c.peer_id);
4364                         if(player != NULL)
4365                                 player->peer_id = 0;
4366
4367                         /*
4368                                 Print out action
4369                         */
4370                         if(player != NULL)
4371                         {
4372                                 std::ostringstream os(std::ios_base::binary);
4373                                 for(core::map<u16, RemoteClient*>::Iterator
4374                                         i = m_clients.getIterator();
4375                                         i.atEnd() == false; i++)
4376                                 {
4377                                         RemoteClient *client = i.getNode()->getValue();
4378                                         assert(client->peer_id == i.getNode()->getKey());
4379                                         if(client->serialization_version == SER_FMT_VER_INVALID)
4380                                                 continue;
4381                                         // Get player
4382                                         Player *player = m_env.getPlayer(client->peer_id);
4383                                         if(!player)
4384                                                 continue;
4385                                         // Get name of player
4386                                         os<<player->getName()<<" ";
4387                                 }
4388
4389                                 actionstream<<player->getName()<<" "
4390                                                 <<(c.timeout?"times out.":"leaves game.")
4391                                                 <<" List of players: "
4392                                                 <<os.str()<<std::endl;
4393                         }
4394                 }
4395
4396                 // Delete client
4397                 delete m_clients[c.peer_id];
4398                 m_clients.remove(c.peer_id);
4399
4400                 // Send player info to all remaining clients
4401                 SendPlayerInfos();
4402
4403                 // Send leave chat message to all remaining clients
4404                 BroadcastChatMessage(message);
4405
4406         } // PEER_REMOVED
4407         else
4408         {
4409                 assert(0);
4410         }
4411 }
4412
4413 void Server::handlePeerChanges()
4414 {
4415         while(m_peer_change_queue.size() > 0)
4416         {
4417                 PeerChange c = m_peer_change_queue.pop_front();
4418
4419                 infostream<<"Server: Handling peer change: "
4420                                 <<"id="<<c.peer_id<<", timeout="<<c.timeout
4421                                 <<std::endl;
4422
4423                 handlePeerChange(c);
4424         }
4425 }
4426
4427 u64 Server::getPlayerPrivs(Player *player)
4428 {
4429         if(player==NULL)
4430                 return 0;
4431         std::string playername = player->getName();
4432         // Local player gets all privileges regardless of
4433         // what's set on their account.
4434         if(g_settings->get("name") == playername)
4435         {
4436                 return PRIV_ALL;
4437         }
4438         else
4439         {
4440                 return getPlayerAuthPrivs(playername);
4441         }
4442 }
4443
4444 void dedicated_server_loop(Server &server, bool &kill)
4445 {
4446         DSTACK(__FUNCTION_NAME);
4447
4448         infostream<<DTIME<<std::endl;
4449         infostream<<"========================"<<std::endl;
4450         infostream<<"Running dedicated server"<<std::endl;
4451         infostream<<"========================"<<std::endl;
4452         infostream<<std::endl;
4453
4454         IntervalLimiter m_profiler_interval;
4455
4456         for(;;)
4457         {
4458                 // This is kind of a hack but can be done like this
4459                 // because server.step() is very light
4460                 {
4461                         ScopeProfiler sp(g_profiler, "dedicated server sleep");
4462                         sleep_ms(30);
4463                 }
4464                 server.step(0.030);
4465
4466                 if(server.getShutdownRequested() || kill)
4467                 {
4468                         infostream<<DTIME<<" dedicated_server_loop(): Quitting."<<std::endl;
4469                         break;
4470                 }
4471
4472                 /*
4473                         Profiler
4474                 */
4475                 float profiler_print_interval =
4476                                 g_settings->getFloat("profiler_print_interval");
4477                 if(profiler_print_interval != 0)
4478                 {
4479                         if(m_profiler_interval.step(0.030, profiler_print_interval))
4480                         {
4481                                 infostream<<"Profiler:"<<std::endl;
4482                                 g_profiler->print(infostream);
4483                                 g_profiler->clear();
4484                         }
4485                 }
4486
4487                 /*
4488                         Player info
4489                 */
4490                 static int counter = 0;
4491                 counter--;
4492                 if(counter <= 0)
4493                 {
4494                         counter = 10;
4495
4496                         core::list<PlayerInfo> list = server.getPlayerInfo();
4497                         core::list<PlayerInfo>::Iterator i;
4498                         static u32 sum_old = 0;
4499                         u32 sum = PIChecksum(list);
4500                         if(sum != sum_old)
4501                         {
4502                                 infostream<<DTIME<<"Player info:"<<std::endl;
4503                                 for(i=list.begin(); i!=list.end(); i++)
4504                                 {
4505                                         i->PrintLine(&infostream);
4506                                 }
4507                         }
4508                         sum_old = sum;
4509                 }
4510         }
4511 }
4512
4513