src/clientiface.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2014 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 Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser 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 <sstream>
  21
  22 #include "clientiface.h"
  23 #include "util/numeric.h"
  24 #include "util/mathconstants.h"
  25 #include "player.h"
  26 #include "settings.h"
  27 #include "mapblock.h"
  28 #include "network/connection.h"
  29 #include "environment.h"
  30 #include "map.h"
  31 #include "emerge.h"
  32 #include "serverobject.h"              // TODO this is used for cleanup of only
  33 #include "log.h"
  34 #include "util/srp.h"
  35
  36 const char *ClientInterface::statenames[] = {
  37         "Invalid",
  38         "Disconnecting",
  39         "Denied",
  40         "Created",
  41         "AwaitingInit2",
  42         "HelloSent",
  43         "InitDone",
  44         "DefinitionsSent",
  45         "Active",
  46         "SudoMode",
  47 };
  48
  49
  50
  51 std::string ClientInterface::state2Name(ClientState state)
  52 {
  53         return statenames[state];
  54 }
  55
  56 void RemoteClient::ResendBlockIfOnWire(v3s16 p)
  57 {
  58         // if this block is on wire, mark it for sending again as soon as possible
  59         if (m_blocks_sending.find(p) != m_blocks_sending.end()) {
  60                 SetBlockNotSent(p);
  61         }
  62 }
  63
  64 void RemoteClient::GetNextBlocks (
  65                 ServerEnvironment *env,
  66                 EmergeManager * emerge,
  67                 float dtime,
  68                 std::vector<PrioritySortedBlockTransfer> &dest)
  69 {
  70         DSTACK(FUNCTION_NAME);
  71
  72
  73         // Increment timers
  74         m_nothing_to_send_pause_timer -= dtime;
  75         m_nearest_unsent_reset_timer += dtime;
  76
  77         if(m_nothing_to_send_pause_timer >= 0)
  78                 return;
  79
  80         Player *player = env->getPlayer(peer_id);
  81         // This can happen sometimes; clients and players are not in perfect sync.
  82         if(player == NULL)
  83                 return;
  84
  85         // Won't send anything if already sending
  86         if(m_blocks_sending.size() >= g_settings->getU16
  87                         ("max_simultaneous_block_sends_per_client"))
  88         {
  89                 //infostream<<"Not sending any blocks, Queue full."<<std::endl;
  90                 return;
  91         }
  92
  93         v3f playerpos = player->getPosition();
  94         v3f playerspeed = player->getSpeed();
  95         v3f playerspeeddir(0,0,0);
  96         if(playerspeed.getLength() > 1.0*BS)
  97                 playerspeeddir = playerspeed / playerspeed.getLength();
  98         // Predict to next block
  99         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
 100
 101         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
 102
 103         v3s16 center = getNodeBlockPos(center_nodepos);
 104
 105         // Camera position and direction
 106         v3f camera_pos = player->getEyePosition();
 107         v3f camera_dir = v3f(0,0,1);
 108         camera_dir.rotateYZBy(player->getPitch());
 109         camera_dir.rotateXZBy(player->getYaw());
 110
 111         /*infostream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 112                         <<camera_dir.Z<<")"<<std::endl;*/
 113
 114         /*
 115                 Get the starting value of the block finder radius.
 116         */
 117
 118         if(m_last_center != center)
 119         {
 120                 m_nearest_unsent_d = 0;
 121                 m_last_center = center;
 122         }
 123
 124         /*infostream<<"m_nearest_unsent_reset_timer="
 125                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 126
 127         // Reset periodically to workaround for some bugs or stuff
 128         if(m_nearest_unsent_reset_timer > 20.0)
 129         {
 130                 m_nearest_unsent_reset_timer = 0;
 131                 m_nearest_unsent_d = 0;
 132                 //infostream<<"Resetting m_nearest_unsent_d for "
 133                 //              <<server->getPlayerName(peer_id)<<std::endl;
 134         }
 135
 136         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 137         s16 d_start = m_nearest_unsent_d;
 138
 139         //infostream<<"d_start="<<d_start<<std::endl;
 140
 141         u16 max_simul_sends_setting = g_settings->getU16
 142                         ("max_simultaneous_block_sends_per_client");
 143         u16 max_simul_sends_usually = max_simul_sends_setting;
 144
 145         /*
 146                 Check the time from last addNode/removeNode.
 147
 148                 Decrease send rate if player is building stuff.
 149         */
 150         m_time_from_building += dtime;
 151         if(m_time_from_building < g_settings->getFloat(
 152                                 "full_block_send_enable_min_time_from_building"))
 153         {
 154                 max_simul_sends_usually
 155                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 156         }
 157
 158         /*
 159                 Number of blocks sending + number of blocks selected for sending
 160         */
 161         u32 num_blocks_selected = m_blocks_sending.size();
 162
 163         /*
 164                 next time d will be continued from the d from which the nearest
 165                 unsent block was found this time.
 166
 167                 This is because not necessarily any of the blocks found this
 168                 time are actually sent.
 169         */
 170         s32 new_nearest_unsent_d = -1;
 171
 172         const s16 full_d_max = g_settings->getS16("max_block_send_distance");
 173         s16 d_max = full_d_max;
 174         s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
 175
 176         // Don't loop very much at a time
 177         s16 max_d_increment_at_time = 2;
 178         if(d_max > d_start + max_d_increment_at_time)
 179                 d_max = d_start + max_d_increment_at_time;
 180
 181         s32 nearest_emerged_d = -1;
 182         s32 nearest_emergefull_d = -1;
 183         s32 nearest_sent_d = -1;
 184         //bool queue_is_full = false;
 185
 186         s16 d;
 187         for(d = d_start; d <= d_max; d++) {
 188                 /*
 189                         Get the border/face dot coordinates of a "d-radiused"
 190                         box
 191                 */
 192                 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
 193
 194                 std::vector<v3s16>::iterator li;
 195                 for(li = list.begin(); li != list.end(); ++li) {
 196                         v3s16 p = *li + center;
 197
 198                         /*
 199                                 Send throttling
 200                                 - Don't allow too many simultaneous transfers
 201                                 - EXCEPT when the blocks are very close
 202
 203                                 Also, don't send blocks that are already flying.
 204                         */
 205
 206                         // Start with the usual maximum
 207                         u16 max_simul_dynamic = max_simul_sends_usually;
 208
 209                         // If block is very close, allow full maximum
 210                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 211                                 max_simul_dynamic = max_simul_sends_setting;
 212
 213                         // Don't select too many blocks for sending
 214                         if (num_blocks_selected >= max_simul_dynamic) {
 215                                 //queue_is_full = true;
 216                                 goto queue_full_break;
 217                         }
 218
 219                         // Don't send blocks that are currently being transferred
 220                         if (m_blocks_sending.find(p) != m_blocks_sending.end())
 221                                 continue;
 222
 223                         /*
 224                                 Do not go over-limit
 225                         */
 226                         if (blockpos_over_limit(p))
 227                                 continue;
 228
 229                         // If this is true, inexistent block will be made from scratch
 230                         bool generate = d <= d_max_gen;
 231
 232                         {
 233                                 /*// Limit the generating area vertically to 2/3
 234                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 235                                         generate = false;*/
 236
 237                                 // Limit the send area vertically to 1/2
 238                                 if (abs(p.Y - center.Y) > full_d_max / 2)
 239                                         continue;
 240                         }
 241
 242                         /*
 243                                 Don't generate or send if not in sight
 244                                 FIXME This only works if the client uses a small enough
 245                                 FOV setting. The default of 72 degrees is fine.
 246                         */
 247
 248                         float camera_fov = (72.0*M_PI/180) * 4./3.;
 249                         if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, 10000*BS) == false)
 250                         {
 251                                 continue;
 252                         }
 253
 254                         /*
 255                                 Don't send already sent blocks
 256                         */
 257                         {
 258                                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 259                                 {
 260                                         continue;
 261                                 }
 262                         }
 263
 264                         /*
 265                                 Check if map has this block
 266                         */
 267                         MapBlock *block = env->getMap().getBlockNoCreateNoEx(p);
 268
 269                         bool surely_not_found_on_disk = false;
 270                         bool block_is_invalid = false;
 271                         if(block != NULL)
 272                         {
 273                                 // Reset usage timer, this block will be of use in the future.
 274                                 block->resetUsageTimer();
 275
 276                                 // Block is dummy if data doesn't exist.
 277                                 // It means it has been not found from disk and not generated
 278                                 if(block->isDummy())
 279                                 {
 280                                         surely_not_found_on_disk = true;
 281                                 }
 282
 283                                 // Block is valid if lighting is up-to-date and data exists
 284                                 if(block->isValid() == false)
 285                                 {
 286                                         block_is_invalid = true;
 287                                 }
 288
 289                                 if(block->isGenerated() == false)
 290                                         block_is_invalid = true;
 291
 292                                 /*
 293                                         If block is not close, don't send it unless it is near
 294                                         ground level.
 295
 296                                         Block is near ground level if night-time mesh
 297                                         differs from day-time mesh.
 298                                 */
 299                                 if(d >= 4)
 300                                 {
 301                                         if(block->getDayNightDiff() == false)
 302                                                 continue;
 303                                 }
 304                         }
 305
 306                         /*
 307                                 If block has been marked to not exist on disk (dummy)
 308                                 and generating new ones is not wanted, skip block.
 309                         */
 310                         if(generate == false && surely_not_found_on_disk == true)
 311                         {
 312                                 // get next one.
 313                                 continue;
 314                         }
 315
 316                         /*
 317                                 Add inexistent block to emerge queue.
 318                         */
 319                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 320                         {
 321                                 if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
 322                                         if (nearest_emerged_d == -1)
 323                                                 nearest_emerged_d = d;
 324                                 } else {
 325                                         if (nearest_emergefull_d == -1)
 326                                                 nearest_emergefull_d = d;
 327                                         goto queue_full_break;
 328                                 }
 329
 330                                 // get next one.
 331                                 continue;
 332                         }
 333
 334                         if(nearest_sent_d == -1)
 335                                 nearest_sent_d = d;
 336
 337                         /*
 338                                 Add block to send queue
 339                         */
 340                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 341
 342                         dest.push_back(q);
 343
 344                         num_blocks_selected += 1;
 345                 }
 346         }
 347 queue_full_break:
 348
 349         // If nothing was found for sending and nothing was queued for
 350         // emerging, continue next time browsing from here
 351         if(nearest_emerged_d != -1){
 352                 new_nearest_unsent_d = nearest_emerged_d;
 353         } else if(nearest_emergefull_d != -1){
 354                 new_nearest_unsent_d = nearest_emergefull_d;
 355         } else {
 356                 if(d > g_settings->getS16("max_block_send_distance")){
 357                         new_nearest_unsent_d = 0;
 358                         m_nothing_to_send_pause_timer = 2.0;
 359                 } else {
 360                         if(nearest_sent_d != -1)
 361                                 new_nearest_unsent_d = nearest_sent_d;
 362                         else
 363                                 new_nearest_unsent_d = d;
 364                 }
 365         }
 366
 367         if(new_nearest_unsent_d != -1)
 368                 m_nearest_unsent_d = new_nearest_unsent_d;
 369 }
 370
 371 void RemoteClient::GotBlock(v3s16 p)
 372 {
 373         if (m_blocks_modified.find(p) == m_blocks_modified.end()) {
 374                 if (m_blocks_sending.find(p) != m_blocks_sending.end())
 375                         m_blocks_sending.erase(p);
 376                 else
 377                         m_excess_gotblocks++;
 378
 379                 m_blocks_sent.insert(p);
 380         }
 381 }
 382
 383 void RemoteClient::SentBlock(v3s16 p)
 384 {
 385         if (m_blocks_modified.find(p) != m_blocks_modified.end())
 386                 m_blocks_modified.erase(p);
 387
 388         if(m_blocks_sending.find(p) == m_blocks_sending.end())
 389                 m_blocks_sending[p] = 0.0;
 390         else
 391                 infostream<<"RemoteClient::SentBlock(): Sent block"
 392                                 " already in m_blocks_sending"<<std::endl;
 393 }
 394
 395 void RemoteClient::SetBlockNotSent(v3s16 p)
 396 {
 397         m_nearest_unsent_d = 0;
 398         m_nothing_to_send_pause_timer = 0;
 399
 400         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 401                 m_blocks_sending.erase(p);
 402         if(m_blocks_sent.find(p) != m_blocks_sent.end())
 403                 m_blocks_sent.erase(p);
 404         m_blocks_modified.insert(p);
 405 }
 406
 407 void RemoteClient::SetBlocksNotSent(std::map<v3s16, MapBlock*> &blocks)
 408 {
 409         m_nearest_unsent_d = 0;
 410         m_nothing_to_send_pause_timer = 0;
 411
 412         for(std::map<v3s16, MapBlock*>::iterator
 413                         i = blocks.begin();
 414                         i != blocks.end(); ++i)
 415         {
 416                 v3s16 p = i->first;
 417                 m_blocks_modified.insert(p);
 418
 419                 if(m_blocks_sending.find(p) != m_blocks_sending.end())
 420                         m_blocks_sending.erase(p);
 421                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 422                         m_blocks_sent.erase(p);
 423         }
 424 }
 425
 426 void RemoteClient::notifyEvent(ClientStateEvent event)
 427 {
 428         std::ostringstream myerror;
 429         switch (m_state)
 430         {
 431         case CS_Invalid:
 432                 //intentionally do nothing
 433                 break;
 434         case CS_Created:
 435                 switch (event) {
 436                 case CSE_Hello:
 437                         m_state = CS_HelloSent;
 438                         break;
 439                 case CSE_InitLegacy:
 440                         m_state = CS_AwaitingInit2;
 441                         break;
 442                 case CSE_Disconnect:
 443                         m_state = CS_Disconnecting;
 444                         break;
 445                 case CSE_SetDenied:
 446                         m_state = CS_Denied;
 447                         break;
 448                 /* GotInit2 SetDefinitionsSent SetMediaSent */
 449                 default:
 450                         myerror << "Created: Invalid client state transition! " << event;
 451                         throw ClientStateError(myerror.str());
 452                 }
 453                 break;
 454         case CS_Denied:
 455                 /* don't do anything if in denied state */
 456                 break;
 457         case CS_HelloSent:
 458                 switch(event)
 459                 {
 460                 case CSE_AuthAccept:
 461                         m_state = CS_AwaitingInit2;
 462                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 463                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 464                                 srp_verifier_delete((SRPVerifier *) auth_data);
 465                         chosen_mech = AUTH_MECHANISM_NONE;
 466                         break;
 467                 case CSE_Disconnect:
 468                         m_state = CS_Disconnecting;
 469                         break;
 470                 case CSE_SetDenied:
 471                         m_state = CS_Denied;
 472                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 473                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 474                                 srp_verifier_delete((SRPVerifier *) auth_data);
 475                         chosen_mech = AUTH_MECHANISM_NONE;
 476                         break;
 477                 default:
 478                         myerror << "HelloSent: Invalid client state transition! " << event;
 479                         throw ClientStateError(myerror.str());
 480                 }
 481                 break;
 482         case CS_AwaitingInit2:
 483                 switch(event)
 484                 {
 485                 case CSE_GotInit2:
 486                         confirmSerializationVersion();
 487                         m_state = CS_InitDone;
 488                         break;
 489                 case CSE_Disconnect:
 490                         m_state = CS_Disconnecting;
 491                         break;
 492                 case CSE_SetDenied:
 493                         m_state = CS_Denied;
 494                         break;
 495
 496                 /* Init SetDefinitionsSent SetMediaSent */
 497                 default:
 498                         myerror << "InitSent: Invalid client state transition! " << event;
 499                         throw ClientStateError(myerror.str());
 500                 }
 501                 break;
 502
 503         case CS_InitDone:
 504                 switch(event)
 505                 {
 506                 case CSE_SetDefinitionsSent:
 507                         m_state = CS_DefinitionsSent;
 508                         break;
 509                 case CSE_Disconnect:
 510                         m_state = CS_Disconnecting;
 511                         break;
 512                 case CSE_SetDenied:
 513                         m_state = CS_Denied;
 514                         break;
 515
 516                 /* Init GotInit2 SetMediaSent */
 517                 default:
 518                         myerror << "InitDone: Invalid client state transition! " << event;
 519                         throw ClientStateError(myerror.str());
 520                 }
 521                 break;
 522         case CS_DefinitionsSent:
 523                 switch(event)
 524                 {
 525                 case CSE_SetClientReady:
 526                         m_state = CS_Active;
 527                         break;
 528                 case CSE_Disconnect:
 529                         m_state = CS_Disconnecting;
 530                         break;
 531                 case CSE_SetDenied:
 532                         m_state = CS_Denied;
 533                         break;
 534                 /* Init GotInit2 SetDefinitionsSent */
 535                 default:
 536                         myerror << "DefinitionsSent: Invalid client state transition! " << event;
 537                         throw ClientStateError(myerror.str());
 538                 }
 539                 break;
 540         case CS_Active:
 541                 switch(event)
 542                 {
 543                 case CSE_SetDenied:
 544                         m_state = CS_Denied;
 545                         break;
 546                 case CSE_Disconnect:
 547                         m_state = CS_Disconnecting;
 548                         break;
 549                 case CSE_SudoSuccess:
 550                         m_state = CS_SudoMode;
 551                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 552                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 553                                 srp_verifier_delete((SRPVerifier *) auth_data);
 554                         chosen_mech = AUTH_MECHANISM_NONE;
 555                         break;
 556                 /* Init GotInit2 SetDefinitionsSent SetMediaSent SetDenied */
 557                 default:
 558                         myerror << "Active: Invalid client state transition! " << event;
 559                         throw ClientStateError(myerror.str());
 560                         break;
 561                 }
 562                 break;
 563         case CS_SudoMode:
 564                 switch(event)
 565                 {
 566                 case CSE_SetDenied:
 567                         m_state = CS_Denied;
 568                         break;
 569                 case CSE_Disconnect:
 570                         m_state = CS_Disconnecting;
 571                         break;
 572                 case CSE_SudoLeave:
 573                         m_state = CS_Active;
 574                         break;
 575                 default:
 576                         myerror << "Active: Invalid client state transition! " << event;
 577                         throw ClientStateError(myerror.str());
 578                         break;
 579                 }
 580                 break;
 581         case CS_Disconnecting:
 582                 /* we are already disconnecting */
 583                 break;
 584         }
 585 }
 586
 587 u32 RemoteClient::uptime()
 588 {
 589         return getTime(PRECISION_SECONDS) - m_connection_time;
 590 }
 591
 592 ClientInterface::ClientInterface(con::Connection* con)
 593 :
 594         m_con(con),
 595         m_env(NULL),
 596         m_print_info_timer(0.0)
 597 {
 598
 599 }
 600 ClientInterface::~ClientInterface()
 601 {
 602         /*
 603                 Delete clients
 604         */
 605         {
 606                 MutexAutoLock clientslock(m_clients_mutex);
 607
 608                 for(std::map<u16, RemoteClient*>::iterator
 609                         i = m_clients.begin();
 610                         i != m_clients.end(); ++i)
 611                 {
 612
 613                         // Delete client
 614                         delete i->second;
 615                 }
 616         }
 617 }
 618
 619 std::vector<u16> ClientInterface::getClientIDs(ClientState min_state)
 620 {
 621         std::vector<u16> reply;
 622         MutexAutoLock clientslock(m_clients_mutex);
 623
 624         for(std::map<u16, RemoteClient*>::iterator
 625                 i = m_clients.begin();
 626                 i != m_clients.end(); ++i)
 627         {
 628                 if (i->second->getState() >= min_state)
 629                         reply.push_back(i->second->peer_id);
 630         }
 631
 632         return reply;
 633 }
 634
 635 std::vector<std::string> ClientInterface::getPlayerNames()
 636 {
 637         return m_clients_names;
 638 }
 639
 640
 641 void ClientInterface::step(float dtime)
 642 {
 643         m_print_info_timer += dtime;
 644         if(m_print_info_timer >= 30.0)
 645         {
 646                 m_print_info_timer = 0.0;
 647                 UpdatePlayerList();
 648         }
 649 }
 650
 651 void ClientInterface::UpdatePlayerList()
 652 {
 653         if (m_env != NULL)
 654                 {
 655                 std::vector<u16> clients = getClientIDs();
 656                 m_clients_names.clear();
 657
 658
 659                 if(!clients.empty())
 660                         infostream<<"Players:"<<std::endl;
 661
 662                 for(std::vector<u16>::iterator
 663                         i = clients.begin();
 664                         i != clients.end(); ++i) {
 665                         Player *player = m_env->getPlayer(*i);
 666
 667                         if (player == NULL)
 668                                 continue;
 669
 670                         infostream << "* " << player->getName() << "\t";
 671
 672                         {
 673                                 MutexAutoLock clientslock(m_clients_mutex);
 674                                 RemoteClient* client = lockedGetClientNoEx(*i);
 675                                 if(client != NULL)
 676                                         client->PrintInfo(infostream);
 677                         }
 678
 679                         m_clients_names.push_back(player->getName());
 680                 }
 681         }
 682 }
 683
 684 void ClientInterface::send(u16 peer_id, u8 channelnum,
 685                 NetworkPacket* pkt, bool reliable)
 686 {
 687         m_con->Send(peer_id, channelnum, pkt, reliable);
 688 }
 689
 690 void ClientInterface::sendToAll(u16 channelnum,
 691                 NetworkPacket* pkt, bool reliable)
 692 {
 693         MutexAutoLock clientslock(m_clients_mutex);
 694         for(std::map<u16, RemoteClient*>::iterator
 695                 i = m_clients.begin();
 696                 i != m_clients.end(); ++i) {
 697                 RemoteClient *client = i->second;
 698
 699                 if (client->net_proto_version != 0) {
 700                         m_con->Send(client->peer_id, channelnum, pkt, reliable);
 701                 }
 702         }
 703 }
 704
 705 RemoteClient* ClientInterface::getClientNoEx(u16 peer_id, ClientState state_min)
 706 {
 707         MutexAutoLock clientslock(m_clients_mutex);
 708         std::map<u16, RemoteClient*>::iterator n;
 709         n = m_clients.find(peer_id);
 710         // The client may not exist; clients are immediately removed if their
 711         // access is denied, and this event occurs later then.
 712         if(n == m_clients.end())
 713                 return NULL;
 714
 715         if (n->second->getState() >= state_min)
 716                 return n->second;
 717         else
 718                 return NULL;
 719 }
 720
 721 RemoteClient* ClientInterface::lockedGetClientNoEx(u16 peer_id, ClientState state_min)
 722 {
 723         std::map<u16, RemoteClient*>::iterator n;
 724         n = m_clients.find(peer_id);
 725         // The client may not exist; clients are immediately removed if their
 726         // access is denied, and this event occurs later then.
 727         if(n == m_clients.end())
 728                 return NULL;
 729
 730         if (n->second->getState() >= state_min)
 731                 return n->second;
 732         else
 733                 return NULL;
 734 }
 735
 736 ClientState ClientInterface::getClientState(u16 peer_id)
 737 {
 738         MutexAutoLock clientslock(m_clients_mutex);
 739         std::map<u16, RemoteClient*>::iterator n;
 740         n = m_clients.find(peer_id);
 741         // The client may not exist; clients are immediately removed if their
 742         // access is denied, and this event occurs later then.
 743         if(n == m_clients.end())
 744                 return CS_Invalid;
 745
 746         return n->second->getState();
 747 }
 748
 749 void ClientInterface::setPlayerName(u16 peer_id,std::string name)
 750 {
 751         MutexAutoLock clientslock(m_clients_mutex);
 752         std::map<u16, RemoteClient*>::iterator n;
 753         n = m_clients.find(peer_id);
 754         // The client may not exist; clients are immediately removed if their
 755         // access is denied, and this event occurs later then.
 756         if(n != m_clients.end())
 757                 n->second->setName(name);
 758 }
 759
 760 void ClientInterface::DeleteClient(u16 peer_id)
 761 {
 762         MutexAutoLock conlock(m_clients_mutex);
 763
 764         // Error check
 765         std::map<u16, RemoteClient*>::iterator n;
 766         n = m_clients.find(peer_id);
 767         // The client may not exist; clients are immediately removed if their
 768         // access is denied, and this event occurs later then.
 769         if(n == m_clients.end())
 770                 return;
 771
 772         /*
 773                 Mark objects to be not known by the client
 774         */
 775         //TODO this should be done by client destructor!!!
 776         RemoteClient *client = n->second;
 777         // Handle objects
 778         for(std::set<u16>::iterator
 779                         i = client->m_known_objects.begin();
 780                         i != client->m_known_objects.end(); ++i)
 781         {
 782                 // Get object
 783                 u16 id = *i;
 784                 ServerActiveObject* obj = m_env->getActiveObject(id);
 785
 786                 if(obj && obj->m_known_by_count > 0)
 787                         obj->m_known_by_count--;
 788         }
 789
 790         // Delete client
 791         delete m_clients[peer_id];
 792         m_clients.erase(peer_id);
 793 }
 794
 795 void ClientInterface::CreateClient(u16 peer_id)
 796 {
 797         MutexAutoLock conlock(m_clients_mutex);
 798
 799         // Error check
 800         std::map<u16, RemoteClient*>::iterator n;
 801         n = m_clients.find(peer_id);
 802         // The client shouldn't already exist
 803         if(n != m_clients.end()) return;
 804
 805         // Create client
 806         RemoteClient *client = new RemoteClient();
 807         client->peer_id = peer_id;
 808         m_clients[client->peer_id] = client;
 809 }
 810
 811 void ClientInterface::event(u16 peer_id, ClientStateEvent event)
 812 {
 813         {
 814                 MutexAutoLock clientlock(m_clients_mutex);
 815
 816                 // Error check
 817                 std::map<u16, RemoteClient*>::iterator n;
 818                 n = m_clients.find(peer_id);
 819
 820                 // No client to deliver event
 821                 if (n == m_clients.end())
 822                         return;
 823                 n->second->notifyEvent(event);
 824         }
 825
 826         if ((event == CSE_SetClientReady) ||
 827                 (event == CSE_Disconnect)     ||
 828                 (event == CSE_SetDenied))
 829         {
 830                 UpdatePlayerList();
 831         }
 832 }
 833
 834 u16 ClientInterface::getProtocolVersion(u16 peer_id)
 835 {
 836         MutexAutoLock conlock(m_clients_mutex);
 837
 838         // Error check
 839         std::map<u16, RemoteClient*>::iterator n;
 840         n = m_clients.find(peer_id);
 841
 842         // No client to get version
 843         if (n == m_clients.end())
 844                 return 0;
 845
 846         return n->second->net_proto_version;
 847 }
 848
 849 void ClientInterface::setClientVersion(u16 peer_id, u8 major, u8 minor, u8 patch, std::string full)
 850 {
 851         MutexAutoLock conlock(m_clients_mutex);
 852
 853         // Error check
 854         std::map<u16, RemoteClient*>::iterator n;
 855         n = m_clients.find(peer_id);
 856
 857         // No client to set versions
 858         if (n == m_clients.end())
 859                 return;
 860
 861         n->second->setVersionInfo(major,minor,patch,full);
 862 }