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