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         s16 d_max = full_d_max;
 178         s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
 179
 180         // Don't loop very much at a time
 181         s16 max_d_increment_at_time = 2;
 182         if(d_max > d_start + max_d_increment_at_time)
 183                 d_max = d_start + max_d_increment_at_time;
 184
 185         s32 nearest_emerged_d = -1;
 186         s32 nearest_emergefull_d = -1;
 187         s32 nearest_sent_d = -1;
 188         //bool queue_is_full = false;
 189
 190         s16 d;
 191         for(d = d_start; d <= d_max; d++) {
 192                 /*
 193                         Get the border/face dot coordinates of a "d-radiused"
 194                         box
 195                 */
 196                 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
 197
 198                 std::vector<v3s16>::iterator li;
 199                 for(li = list.begin(); li != list.end(); ++li) {
 200                         v3s16 p = *li + center;
 201
 202                         /*
 203                                 Send throttling
 204                                 - Don't allow too many simultaneous transfers
 205                                 - EXCEPT when the blocks are very close
 206
 207                                 Also, don't send blocks that are already flying.
 208                         */
 209
 210                         // Start with the usual maximum
 211                         u16 max_simul_dynamic = max_simul_sends_usually;
 212
 213                         // If block is very close, allow full maximum
 214                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 215                                 max_simul_dynamic = max_simul_sends_setting;
 216
 217                         // Don't select too many blocks for sending
 218                         if (num_blocks_selected >= max_simul_dynamic) {
 219                                 //queue_is_full = true;
 220                                 goto queue_full_break;
 221                         }
 222
 223                         // Don't send blocks that are currently being transferred
 224                         if (m_blocks_sending.find(p) != m_blocks_sending.end())
 225                                 continue;
 226
 227                         /*
 228                                 Do not go over-limit
 229                         */
 230                         if (blockpos_over_limit(p))
 231                                 continue;
 232
 233                         // If this is true, inexistent block will be made from scratch
 234                         bool generate = d <= d_max_gen;
 235
 236                         {
 237                                 /*// Limit the generating area vertically to 2/3
 238                                 if(abs(p.Y - center.Y) > d_max_gen - d_max_gen / 3)
 239                                         generate = false;*/
 240
 241                                 // Limit the send area vertically to 1/2
 242                                 if (abs(p.Y - center.Y) > full_d_max / 2)
 243                                         continue;
 244                         }
 245
 246                         /*
 247                                 Don't generate or send if not in sight
 248                                 FIXME This only works if the client uses a small enough
 249                                 FOV setting. The default of 72 degrees is fine.
 250                         */
 251
 252                         float camera_fov = (72.0*M_PI/180) * 4./3.;
 253                         if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, 10000*BS) == false)
 254                         {
 255                                 continue;
 256                         }
 257
 258                         /*
 259                                 Don't send already sent blocks
 260                         */
 261                         {
 262                                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 263                                 {
 264                                         continue;
 265                                 }
 266                         }
 267
 268                         /*
 269                                 Check if map has this block
 270                         */
 271                         MapBlock *block = env->getMap().getBlockNoCreateNoEx(p);
 272
 273                         bool surely_not_found_on_disk = false;
 274                         bool block_is_invalid = false;
 275                         if(block != NULL)
 276                         {
 277                                 // Reset usage timer, this block will be of use in the future.
 278                                 block->resetUsageTimer();
 279
 280                                 // Block is dummy if data doesn't exist.
 281                                 // It means it has been not found from disk and not generated
 282                                 if(block->isDummy())
 283                                 {
 284                                         surely_not_found_on_disk = true;
 285                                 }
 286
 287                                 // Block is valid if lighting is up-to-date and data exists
 288                                 if(block->isValid() == false)
 289                                 {
 290                                         block_is_invalid = true;
 291                                 }
 292
 293                                 if(block->isGenerated() == false)
 294                                         block_is_invalid = true;
 295
 296                                 /*
 297                                         If block is not close, don't send it unless it is near
 298                                         ground level.
 299
 300                                         Block is near ground level if night-time mesh
 301                                         differs from day-time mesh.
 302                                 */
 303                                 if(d >= 4)
 304                                 {
 305                                         if(block->getDayNightDiff() == false)
 306                                                 continue;
 307                                 }
 308                         }
 309
 310                         /*
 311                                 If block has been marked to not exist on disk (dummy)
 312                                 and generating new ones is not wanted, skip block.
 313                         */
 314                         if(generate == false && surely_not_found_on_disk == true)
 315                         {
 316                                 // get next one.
 317                                 continue;
 318                         }
 319
 320                         /*
 321                                 Add inexistent block to emerge queue.
 322                         */
 323                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 324                         {
 325                                 if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
 326                                         if (nearest_emerged_d == -1)
 327                                                 nearest_emerged_d = d;
 328                                 } else {
 329                                         if (nearest_emergefull_d == -1)
 330                                                 nearest_emergefull_d = d;
 331                                         goto queue_full_break;
 332                                 }
 333
 334                                 // get next one.
 335                                 continue;
 336                         }
 337
 338                         if(nearest_sent_d == -1)
 339                                 nearest_sent_d = d;
 340
 341                         /*
 342                                 Add block to send queue
 343                         */
 344                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 345
 346                         dest.push_back(q);
 347
 348                         num_blocks_selected += 1;
 349                 }
 350         }
 351 queue_full_break:
 352
 353         // If nothing was found for sending and nothing was queued for
 354         // emerging, continue next time browsing from here
 355         if(nearest_emerged_d != -1){
 356                 new_nearest_unsent_d = nearest_emerged_d;
 357         } else if(nearest_emergefull_d != -1){
 358                 new_nearest_unsent_d = nearest_emergefull_d;
 359         } else {
 360                 if(d > g_settings->getS16("max_block_send_distance")){
 361                         new_nearest_unsent_d = 0;
 362                         m_nothing_to_send_pause_timer = 2.0;
 363                 } else {
 364                         if(nearest_sent_d != -1)
 365                                 new_nearest_unsent_d = nearest_sent_d;
 366                         else
 367                                 new_nearest_unsent_d = d;
 368                 }
 369         }
 370
 371         if(new_nearest_unsent_d != -1)
 372                 m_nearest_unsent_d = new_nearest_unsent_d;
 373 }
 374
 375 void RemoteClient::GotBlock(v3s16 p)
 376 {
 377         if (m_blocks_modified.find(p) == m_blocks_modified.end()) {
 378                 if (m_blocks_sending.find(p) != m_blocks_sending.end())
 379                         m_blocks_sending.erase(p);
 380                 else
 381                         m_excess_gotblocks++;
 382
 383                 m_blocks_sent.insert(p);
 384         }
 385 }
 386
 387 void RemoteClient::SentBlock(v3s16 p)
 388 {
 389         if (m_blocks_modified.find(p) != m_blocks_modified.end())
 390                 m_blocks_modified.erase(p);
 391
 392         if(m_blocks_sending.find(p) == m_blocks_sending.end())
 393                 m_blocks_sending[p] = 0.0;
 394         else
 395                 infostream<<"RemoteClient::SentBlock(): Sent block"
 396                                 " already in m_blocks_sending"<<std::endl;
 397 }
 398
 399 void RemoteClient::SetBlockNotSent(v3s16 p)
 400 {
 401         m_nearest_unsent_d = 0;
 402         m_nothing_to_send_pause_timer = 0;
 403
 404         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 405                 m_blocks_sending.erase(p);
 406         if(m_blocks_sent.find(p) != m_blocks_sent.end())
 407                 m_blocks_sent.erase(p);
 408         m_blocks_modified.insert(p);
 409 }
 410
 411 void RemoteClient::SetBlocksNotSent(std::map<v3s16, MapBlock*> &blocks)
 412 {
 413         m_nearest_unsent_d = 0;
 414         m_nothing_to_send_pause_timer = 0;
 415
 416         for(std::map<v3s16, MapBlock*>::iterator
 417                         i = blocks.begin();
 418                         i != blocks.end(); ++i)
 419         {
 420                 v3s16 p = i->first;
 421                 m_blocks_modified.insert(p);
 422
 423                 if(m_blocks_sending.find(p) != m_blocks_sending.end())
 424                         m_blocks_sending.erase(p);
 425                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 426                         m_blocks_sent.erase(p);
 427         }
 428 }
 429
 430 void RemoteClient::notifyEvent(ClientStateEvent event)
 431 {
 432         std::ostringstream myerror;
 433         switch (m_state)
 434         {
 435         case CS_Invalid:
 436                 //intentionally do nothing
 437                 break;
 438         case CS_Created:
 439                 switch (event) {
 440                 case CSE_Hello:
 441                         m_state = CS_HelloSent;
 442                         break;
 443                 case CSE_InitLegacy:
 444                         m_state = CS_AwaitingInit2;
 445                         break;
 446                 case CSE_Disconnect:
 447                         m_state = CS_Disconnecting;
 448                         break;
 449                 case CSE_SetDenied:
 450                         m_state = CS_Denied;
 451                         break;
 452                 /* GotInit2 SetDefinitionsSent SetMediaSent */
 453                 default:
 454                         myerror << "Created: Invalid client state transition! " << event;
 455                         throw ClientStateError(myerror.str());
 456                 }
 457                 break;
 458         case CS_Denied:
 459                 /* don't do anything if in denied state */
 460                 break;
 461         case CS_HelloSent:
 462                 switch(event)
 463                 {
 464                 case CSE_AuthAccept:
 465                         m_state = CS_AwaitingInit2;
 466                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 467                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 468                                 srp_verifier_delete((SRPVerifier *) auth_data);
 469                         chosen_mech = AUTH_MECHANISM_NONE;
 470                         break;
 471                 case CSE_Disconnect:
 472                         m_state = CS_Disconnecting;
 473                         break;
 474                 case CSE_SetDenied:
 475                         m_state = CS_Denied;
 476                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 477                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 478                                 srp_verifier_delete((SRPVerifier *) auth_data);
 479                         chosen_mech = AUTH_MECHANISM_NONE;
 480                         break;
 481                 default:
 482                         myerror << "HelloSent: Invalid client state transition! " << event;
 483                         throw ClientStateError(myerror.str());
 484                 }
 485                 break;
 486         case CS_AwaitingInit2:
 487                 switch(event)
 488                 {
 489                 case CSE_GotInit2:
 490                         confirmSerializationVersion();
 491                         m_state = CS_InitDone;
 492                         break;
 493                 case CSE_Disconnect:
 494                         m_state = CS_Disconnecting;
 495                         break;
 496                 case CSE_SetDenied:
 497                         m_state = CS_Denied;
 498                         break;
 499
 500                 /* Init SetDefinitionsSent SetMediaSent */
 501                 default:
 502                         myerror << "InitSent: Invalid client state transition! " << event;
 503                         throw ClientStateError(myerror.str());
 504                 }
 505                 break;
 506
 507         case CS_InitDone:
 508                 switch(event)
 509                 {
 510                 case CSE_SetDefinitionsSent:
 511                         m_state = CS_DefinitionsSent;
 512                         break;
 513                 case CSE_Disconnect:
 514                         m_state = CS_Disconnecting;
 515                         break;
 516                 case CSE_SetDenied:
 517                         m_state = CS_Denied;
 518                         break;
 519
 520                 /* Init GotInit2 SetMediaSent */
 521                 default:
 522                         myerror << "InitDone: Invalid client state transition! " << event;
 523                         throw ClientStateError(myerror.str());
 524                 }
 525                 break;
 526         case CS_DefinitionsSent:
 527                 switch(event)
 528                 {
 529                 case CSE_SetClientReady:
 530                         m_state = CS_Active;
 531                         break;
 532                 case CSE_Disconnect:
 533                         m_state = CS_Disconnecting;
 534                         break;
 535                 case CSE_SetDenied:
 536                         m_state = CS_Denied;
 537                         break;
 538                 /* Init GotInit2 SetDefinitionsSent */
 539                 default:
 540                         myerror << "DefinitionsSent: Invalid client state transition! " << event;
 541                         throw ClientStateError(myerror.str());
 542                 }
 543                 break;
 544         case CS_Active:
 545                 switch(event)
 546                 {
 547                 case CSE_SetDenied:
 548                         m_state = CS_Denied;
 549                         break;
 550                 case CSE_Disconnect:
 551                         m_state = CS_Disconnecting;
 552                         break;
 553                 case CSE_SudoSuccess:
 554                         m_state = CS_SudoMode;
 555                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 556                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 557                                 srp_verifier_delete((SRPVerifier *) auth_data);
 558                         chosen_mech = AUTH_MECHANISM_NONE;
 559                         break;
 560                 /* Init GotInit2 SetDefinitionsSent SetMediaSent SetDenied */
 561                 default:
 562                         myerror << "Active: Invalid client state transition! " << event;
 563                         throw ClientStateError(myerror.str());
 564                         break;
 565                 }
 566                 break;
 567         case CS_SudoMode:
 568                 switch(event)
 569                 {
 570                 case CSE_SetDenied:
 571                         m_state = CS_Denied;
 572                         break;
 573                 case CSE_Disconnect:
 574                         m_state = CS_Disconnecting;
 575                         break;
 576                 case CSE_SudoLeave:
 577                         m_state = CS_Active;
 578                         break;
 579                 default:
 580                         myerror << "Active: Invalid client state transition! " << event;
 581                         throw ClientStateError(myerror.str());
 582                         break;
 583                 }
 584                 break;
 585         case CS_Disconnecting:
 586                 /* we are already disconnecting */
 587                 break;
 588         }
 589 }
 590
 591 u32 RemoteClient::uptime()
 592 {
 593         return getTime(PRECISION_SECONDS) - m_connection_time;
 594 }
 595
 596 ClientInterface::ClientInterface(con::Connection* con)
 597 :
 598         m_con(con),
 599         m_env(NULL),
 600         m_print_info_timer(0.0)
 601 {
 602
 603 }
 604 ClientInterface::~ClientInterface()
 605 {
 606         /*
 607                 Delete clients
 608         */
 609         {
 610                 MutexAutoLock clientslock(m_clients_mutex);
 611
 612                 for (UNORDERED_MAP<u16, RemoteClient*>::iterator i = m_clients.begin();
 613                         i != m_clients.end(); ++i) {
 614                         // Delete client
 615                         delete i->second;
 616                 }
 617         }
 618 }
 619
 620 std::vector<u16> ClientInterface::getClientIDs(ClientState min_state)
 621 {
 622         std::vector<u16> reply;
 623         MutexAutoLock clientslock(m_clients_mutex);
 624
 625         for(UNORDERED_MAP<u16, RemoteClient*>::iterator i = m_clients.begin();
 626                 i != m_clients.end(); ++i) {
 627                 if (i->second->getState() >= min_state)
 628                         reply.push_back(i->second->peer_id);
 629         }
 630
 631         return reply;
 632 }
 633
 634 void ClientInterface::step(float dtime)
 635 {
 636         m_print_info_timer += dtime;
 637         if(m_print_info_timer >= 30.0)
 638         {
 639                 m_print_info_timer = 0.0;
 640                 UpdatePlayerList();
 641         }
 642 }
 643
 644 void ClientInterface::UpdatePlayerList()
 645 {
 646         if (m_env != NULL) {
 647                 std::vector<u16> clients = getClientIDs();
 648                 m_clients_names.clear();
 649
 650
 651                 if(!clients.empty())
 652                         infostream<<"Players:"<<std::endl;
 653
 654                 for (std::vector<u16>::iterator i = clients.begin(); i != clients.end(); ++i) {
 655                         RemotePlayer *player = m_env->getPlayer(*i);
 656
 657                         if (player == NULL)
 658                                 continue;
 659
 660                         infostream << "* " << player->getName() << "\t";
 661
 662                         {
 663                                 MutexAutoLock clientslock(m_clients_mutex);
 664                                 RemoteClient* client = lockedGetClientNoEx(*i);
 665                                 if(client != NULL)
 666                                         client->PrintInfo(infostream);
 667                         }
 668
 669                         m_clients_names.push_back(player->getName());
 670                 }
 671         }
 672 }
 673
 674 void ClientInterface::send(u16 peer_id, u8 channelnum,
 675                 NetworkPacket* pkt, bool reliable)
 676 {
 677         m_con->Send(peer_id, channelnum, pkt, reliable);
 678 }
 679
 680 void ClientInterface::sendToAll(u16 channelnum,
 681                 NetworkPacket* pkt, bool reliable)
 682 {
 683         MutexAutoLock clientslock(m_clients_mutex);
 684         for(UNORDERED_MAP<u16, RemoteClient*>::iterator i = m_clients.begin();
 685                 i != m_clients.end(); ++i) {
 686                 RemoteClient *client = i->second;
 687
 688                 if (client->net_proto_version != 0) {
 689                         m_con->Send(client->peer_id, channelnum, pkt, reliable);
 690                 }
 691         }
 692 }
 693
 694 RemoteClient* ClientInterface::getClientNoEx(u16 peer_id, ClientState state_min)
 695 {
 696         MutexAutoLock clientslock(m_clients_mutex);
 697         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 698         // The client may not exist; clients are immediately removed if their
 699         // access is denied, and this event occurs later then.
 700         if (n == m_clients.end())
 701                 return NULL;
 702
 703         if (n->second->getState() >= state_min)
 704                 return n->second;
 705         else
 706                 return NULL;
 707 }
 708
 709 RemoteClient* ClientInterface::lockedGetClientNoEx(u16 peer_id, ClientState state_min)
 710 {
 711         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 712         // The client may not exist; clients are immediately removed if their
 713         // access is denied, and this event occurs later then.
 714         if (n == m_clients.end())
 715                 return NULL;
 716
 717         if (n->second->getState() >= state_min)
 718                 return n->second;
 719         else
 720                 return NULL;
 721 }
 722
 723 ClientState ClientInterface::getClientState(u16 peer_id)
 724 {
 725         MutexAutoLock clientslock(m_clients_mutex);
 726         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 727         // The client may not exist; clients are immediately removed if their
 728         // access is denied, and this event occurs later then.
 729         if (n == m_clients.end())
 730                 return CS_Invalid;
 731
 732         return n->second->getState();
 733 }
 734
 735 void ClientInterface::setPlayerName(u16 peer_id,std::string name)
 736 {
 737         MutexAutoLock clientslock(m_clients_mutex);
 738         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 739         // The client may not exist; clients are immediately removed if their
 740         // access is denied, and this event occurs later then.
 741         if (n != m_clients.end())
 742                 n->second->setName(name);
 743 }
 744
 745 void ClientInterface::DeleteClient(u16 peer_id)
 746 {
 747         MutexAutoLock conlock(m_clients_mutex);
 748
 749         // Error check
 750         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 751         // The client may not exist; clients are immediately removed if their
 752         // access is denied, and this event occurs later then.
 753         if (n == m_clients.end())
 754                 return;
 755
 756         /*
 757                 Mark objects to be not known by the client
 758         */
 759         //TODO this should be done by client destructor!!!
 760         RemoteClient *client = n->second;
 761         // Handle objects
 762         for(std::set<u16>::iterator
 763                         i = client->m_known_objects.begin();
 764                         i != client->m_known_objects.end(); ++i)
 765         {
 766                 // Get object
 767                 u16 id = *i;
 768                 ServerActiveObject* obj = m_env->getActiveObject(id);
 769
 770                 if(obj && obj->m_known_by_count > 0)
 771                         obj->m_known_by_count--;
 772         }
 773
 774         // Delete client
 775         delete m_clients[peer_id];
 776         m_clients.erase(peer_id);
 777 }
 778
 779 void ClientInterface::CreateClient(u16 peer_id)
 780 {
 781         MutexAutoLock conlock(m_clients_mutex);
 782
 783         // Error check
 784         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 785         // The client shouldn't already exist
 786         if (n != m_clients.end()) return;
 787
 788         // Create client
 789         RemoteClient *client = new RemoteClient();
 790         client->peer_id = peer_id;
 791         m_clients[client->peer_id] = client;
 792 }
 793
 794 void ClientInterface::event(u16 peer_id, ClientStateEvent event)
 795 {
 796         {
 797                 MutexAutoLock clientlock(m_clients_mutex);
 798
 799                 // Error check
 800                 UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 801
 802                 // No client to deliver event
 803                 if (n == m_clients.end())
 804                         return;
 805                 n->second->notifyEvent(event);
 806         }
 807
 808         if ((event == CSE_SetClientReady) ||
 809                 (event == CSE_Disconnect)     ||
 810                 (event == CSE_SetDenied))
 811         {
 812                 UpdatePlayerList();
 813         }
 814 }
 815
 816 u16 ClientInterface::getProtocolVersion(u16 peer_id)
 817 {
 818         MutexAutoLock conlock(m_clients_mutex);
 819
 820         // Error check
 821         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 822
 823         // No client to get version
 824         if (n == m_clients.end())
 825                 return 0;
 826
 827         return n->second->net_proto_version;
 828 }
 829
 830 void ClientInterface::setClientVersion(u16 peer_id, u8 major, u8 minor, u8 patch, std::string full)
 831 {
 832         MutexAutoLock conlock(m_clients_mutex);
 833
 834         // Error check
 835         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 836
 837         // No client to set versions
 838         if (n == m_clients.end())
 839                 return;
 840
 841         n->second->setVersionInfo(major,minor,patch,full);
 842 }