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 "remoteplayer.h"
  25 #include "settings.h"
  26 #include "mapblock.h"
  27 #include "network/connection.h"
  28 #include "serverenvironment.h"
  29 #include "map.h"
  30 #include "emerge.h"
  31 #include "content_sao.h"              // TODO this is used for cleanup of only
  32 #include "log.h"
  33 #include "util/srp.h"
  34
  35 const char *ClientInterface::statenames[] = {
  36         "Invalid",
  37         "Disconnecting",
  38         "Denied",
  39         "Created",
  40         "AwaitingInit2",
  41         "HelloSent",
  42         "InitDone",
  43         "DefinitionsSent",
  44         "Active",
  45         "SudoMode",
  46 };
  47
  48
  49
  50 std::string ClientInterface::state2Name(ClientState state)
  51 {
  52         return statenames[state];
  53 }
  54
  55 void RemoteClient::ResendBlockIfOnWire(v3s16 p)
  56 {
  57         // if this block is on wire, mark it for sending again as soon as possible
  58         if (m_blocks_sending.find(p) != m_blocks_sending.end()) {
  59                 SetBlockNotSent(p);
  60         }
  61 }
  62
  63 void RemoteClient::GetNextBlocks (
  64                 ServerEnvironment *env,
  65                 EmergeManager * emerge,
  66                 float dtime,
  67                 std::vector<PrioritySortedBlockTransfer> &dest)
  68 {
  69         DSTACK(FUNCTION_NAME);
  70
  71
  72         // Increment timers
  73         m_nothing_to_send_pause_timer -= dtime;
  74         m_nearest_unsent_reset_timer += dtime;
  75
  76         if(m_nothing_to_send_pause_timer >= 0)
  77                 return;
  78
  79         RemotePlayer *player = env->getPlayer(peer_id);
  80         // This can happen sometimes; clients and players are not in perfect sync.
  81         if (player == NULL)
  82                 return;
  83
  84         PlayerSAO *sao = player->getPlayerSAO();
  85         if (sao == NULL)
  86                 return;
  87
  88         // Won't send anything if already sending
  89         if(m_blocks_sending.size() >= g_settings->getU16
  90                         ("max_simultaneous_block_sends_per_client"))
  91         {
  92                 //infostream<<"Not sending any blocks, Queue full."<<std::endl;
  93                 return;
  94         }
  95
  96         v3f playerpos = sao->getBasePosition();
  97         v3f playerspeed = player->getSpeed();
  98         v3f playerspeeddir(0,0,0);
  99         if(playerspeed.getLength() > 1.0*BS)
 100                 playerspeeddir = playerspeed / playerspeed.getLength();
 101         // Predict to next block
 102         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
 103
 104         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
 105
 106         v3s16 center = getNodeBlockPos(center_nodepos);
 107
 108         // Camera position and direction
 109         v3f camera_pos = sao->getEyePosition();
 110         v3f camera_dir = v3f(0,0,1);
 111         camera_dir.rotateYZBy(sao->getPitch());
 112         camera_dir.rotateXZBy(sao->getYaw());
 113
 114         /*infostream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 115                         <<camera_dir.Z<<")"<<std::endl;*/
 116
 117         /*
 118                 Get the starting value of the block finder radius.
 119         */
 120
 121         if(m_last_center != center)
 122         {
 123                 m_nearest_unsent_d = 0;
 124                 m_last_center = center;
 125         }
 126
 127         /*infostream<<"m_nearest_unsent_reset_timer="
 128                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 129
 130         // Reset periodically to workaround for some bugs or stuff
 131         if(m_nearest_unsent_reset_timer > 20.0)
 132         {
 133                 m_nearest_unsent_reset_timer = 0;
 134                 m_nearest_unsent_d = 0;
 135                 //infostream<<"Resetting m_nearest_unsent_d for "
 136                 //              <<server->getPlayerName(peer_id)<<std::endl;
 137         }
 138
 139         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 140         s16 d_start = m_nearest_unsent_d;
 141
 142         //infostream<<"d_start="<<d_start<<std::endl;
 143
 144         u16 max_simul_sends_setting = g_settings->getU16
 145                         ("max_simultaneous_block_sends_per_client");
 146         u16 max_simul_sends_usually = max_simul_sends_setting;
 147
 148         /*
 149                 Check the time from last addNode/removeNode.
 150
 151                 Decrease send rate if player is building stuff.
 152         */
 153         m_time_from_building += dtime;
 154         if(m_time_from_building < g_settings->getFloat(
 155                                 "full_block_send_enable_min_time_from_building"))
 156         {
 157                 max_simul_sends_usually
 158                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 159         }
 160
 161         /*
 162                 Number of blocks sending + number of blocks selected for sending
 163         */
 164         u32 num_blocks_selected = m_blocks_sending.size();
 165
 166         /*
 167                 next time d will be continued from the d from which the nearest
 168                 unsent block was found this time.
 169
 170                 This is because not necessarily any of the blocks found this
 171                 time are actually sent.
 172         */
 173         s32 new_nearest_unsent_d = -1;
 174
 175         // get view range and camera fov from the client
 176         s16 wanted_range = sao->getWantedRange();
 177         float camera_fov = sao->getFov();
 178         // if FOV, wanted_range are not available (old client), fall back to old default
 179         if (wanted_range <= 0) wanted_range = 1000;
 180         if (camera_fov <= 0) camera_fov = (72.0*M_PI/180) * 4./3.;
 181
 182         const s16 full_d_max = MYMIN(g_settings->getS16("max_block_send_distance"), wanted_range);
 183         const s16 d_opt = MYMIN(g_settings->getS16("block_send_optimize_distance"), wanted_range);
 184         const s16 d_blocks_in_sight = full_d_max * BS * MAP_BLOCKSIZE;
 185         //infostream << "Fov from client " << camera_fov << " full_d_max " << full_d_max << std::endl;
 186
 187         s16 d_max = full_d_max;
 188         s16 d_max_gen = MYMIN(g_settings->getS16("max_block_generate_distance"), wanted_range);
 189
 190         // Don't loop very much at a time
 191         s16 max_d_increment_at_time = 2;
 192         if(d_max > d_start + max_d_increment_at_time)
 193                 d_max = d_start + max_d_increment_at_time;
 194
 195         s32 nearest_emerged_d = -1;
 196         s32 nearest_emergefull_d = -1;
 197         s32 nearest_sent_d = -1;
 198         //bool queue_is_full = false;
 199
 200         s16 d;
 201         for(d = d_start; d <= d_max; d++) {
 202                 /*
 203                         Get the border/face dot coordinates of a "d-radiused"
 204                         box
 205                 */
 206                 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
 207
 208                 std::vector<v3s16>::iterator li;
 209                 for(li = list.begin(); li != list.end(); ++li) {
 210                         v3s16 p = *li + center;
 211
 212                         /*
 213                                 Send throttling
 214                                 - Don't allow too many simultaneous transfers
 215                                 - EXCEPT when the blocks are very close
 216
 217                                 Also, don't send blocks that are already flying.
 218                         */
 219
 220                         // Start with the usual maximum
 221                         u16 max_simul_dynamic = max_simul_sends_usually;
 222
 223                         // If block is very close, allow full maximum
 224                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 225                                 max_simul_dynamic = max_simul_sends_setting;
 226
 227                         // Don't select too many blocks for sending
 228                         if (num_blocks_selected >= max_simul_dynamic) {
 229                                 //queue_is_full = true;
 230                                 goto queue_full_break;
 231                         }
 232
 233                         // Don't send blocks that are currently being transferred
 234                         if (m_blocks_sending.find(p) != m_blocks_sending.end())
 235                                 continue;
 236
 237                         /*
 238                                 Do not go over-limit
 239                         */
 240                         if (blockpos_over_limit(p))
 241                                 continue;
 242
 243                         // If this is true, inexistent block will be made from scratch
 244                         bool generate = d <= d_max_gen;
 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                         if(isBlockInSight(p, camera_pos, camera_dir, camera_fov, d_blocks_in_sight) == false)
 253                         {
 254                                 continue;
 255                         }
 256
 257                         /*
 258                                 Don't send already sent blocks
 259                         */
 260                         {
 261                                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 262                                 {
 263                                         continue;
 264                                 }
 265                         }
 266
 267                         /*
 268                                 Check if map has this block
 269                         */
 270                         MapBlock *block = env->getMap().getBlockNoCreateNoEx(p);
 271
 272                         bool surely_not_found_on_disk = false;
 273                         bool block_is_invalid = false;
 274                         if(block != NULL)
 275                         {
 276                                 // Reset usage timer, this block will be of use in the future.
 277                                 block->resetUsageTimer();
 278
 279                                 // Block is dummy if data doesn't exist.
 280                                 // It means it has been not found from disk and not generated
 281                                 if(block->isDummy())
 282                                 {
 283                                         surely_not_found_on_disk = true;
 284                                 }
 285
 286                                 if(block->isGenerated() == false)
 287                                         block_is_invalid = true;
 288
 289                                 /*
 290                                         If block is not close, don't send it unless it is near
 291                                         ground level.
 292
 293                                         Block is near ground level if night-time mesh
 294                                         differs from day-time mesh.
 295                                 */
 296                                 if(d >= d_opt)
 297                                 {
 298                                         if(block->getDayNightDiff() == false)
 299                                                 continue;
 300                                 }
 301                         }
 302
 303                         /*
 304                                 If block has been marked to not exist on disk (dummy)
 305                                 and generating new ones is not wanted, skip block.
 306                         */
 307                         if(generate == false && surely_not_found_on_disk == true)
 308                         {
 309                                 // get next one.
 310                                 continue;
 311                         }
 312
 313                         /*
 314                                 Add inexistent block to emerge queue.
 315                         */
 316                         if(block == NULL || surely_not_found_on_disk || block_is_invalid)
 317                         {
 318                                 if (emerge->enqueueBlockEmerge(peer_id, p, generate)) {
 319                                         if (nearest_emerged_d == -1)
 320                                                 nearest_emerged_d = d;
 321                                 } else {
 322                                         if (nearest_emergefull_d == -1)
 323                                                 nearest_emergefull_d = d;
 324                                         goto queue_full_break;
 325                                 }
 326
 327                                 // get next one.
 328                                 continue;
 329                         }
 330
 331                         if(nearest_sent_d == -1)
 332                                 nearest_sent_d = d;
 333
 334                         /*
 335                                 Add block to send queue
 336                         */
 337                         PrioritySortedBlockTransfer q((float)d, p, peer_id);
 338
 339                         dest.push_back(q);
 340
 341                         num_blocks_selected += 1;
 342                 }
 343         }
 344 queue_full_break:
 345
 346         // If nothing was found for sending and nothing was queued for
 347         // emerging, continue next time browsing from here
 348         if(nearest_emerged_d != -1){
 349                 new_nearest_unsent_d = nearest_emerged_d;
 350         } else if(nearest_emergefull_d != -1){
 351                 new_nearest_unsent_d = nearest_emergefull_d;
 352         } else {
 353                 if(d > full_d_max){
 354                         new_nearest_unsent_d = 0;
 355                         m_nothing_to_send_pause_timer = 2.0;
 356                 } else {
 357                         if(nearest_sent_d != -1)
 358                                 new_nearest_unsent_d = nearest_sent_d;
 359                         else
 360                                 new_nearest_unsent_d = d;
 361                 }
 362         }
 363
 364         if(new_nearest_unsent_d != -1)
 365                 m_nearest_unsent_d = new_nearest_unsent_d;
 366 }
 367
 368 void RemoteClient::GotBlock(v3s16 p)
 369 {
 370         if (m_blocks_modified.find(p) == m_blocks_modified.end()) {
 371                 if (m_blocks_sending.find(p) != m_blocks_sending.end())
 372                         m_blocks_sending.erase(p);
 373                 else
 374                         m_excess_gotblocks++;
 375
 376                 m_blocks_sent.insert(p);
 377         }
 378 }
 379
 380 void RemoteClient::SentBlock(v3s16 p)
 381 {
 382         if (m_blocks_modified.find(p) != m_blocks_modified.end())
 383                 m_blocks_modified.erase(p);
 384
 385         if(m_blocks_sending.find(p) == m_blocks_sending.end())
 386                 m_blocks_sending[p] = 0.0;
 387         else
 388                 infostream<<"RemoteClient::SentBlock(): Sent block"
 389                                 " already in m_blocks_sending"<<std::endl;
 390 }
 391
 392 void RemoteClient::SetBlockNotSent(v3s16 p)
 393 {
 394         m_nearest_unsent_d = 0;
 395         m_nothing_to_send_pause_timer = 0;
 396
 397         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 398                 m_blocks_sending.erase(p);
 399         if(m_blocks_sent.find(p) != m_blocks_sent.end())
 400                 m_blocks_sent.erase(p);
 401         m_blocks_modified.insert(p);
 402 }
 403
 404 void RemoteClient::SetBlocksNotSent(std::map<v3s16, MapBlock*> &blocks)
 405 {
 406         m_nearest_unsent_d = 0;
 407         m_nothing_to_send_pause_timer = 0;
 408
 409         for(std::map<v3s16, MapBlock*>::iterator
 410                         i = blocks.begin();
 411                         i != blocks.end(); ++i)
 412         {
 413                 v3s16 p = i->first;
 414                 m_blocks_modified.insert(p);
 415
 416                 if(m_blocks_sending.find(p) != m_blocks_sending.end())
 417                         m_blocks_sending.erase(p);
 418                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 419                         m_blocks_sent.erase(p);
 420         }
 421 }
 422
 423 void RemoteClient::notifyEvent(ClientStateEvent event)
 424 {
 425         std::ostringstream myerror;
 426         switch (m_state)
 427         {
 428         case CS_Invalid:
 429                 //intentionally do nothing
 430                 break;
 431         case CS_Created:
 432                 switch (event) {
 433                 case CSE_Hello:
 434                         m_state = CS_HelloSent;
 435                         break;
 436                 case CSE_InitLegacy:
 437                         m_state = CS_AwaitingInit2;
 438                         break;
 439                 case CSE_Disconnect:
 440                         m_state = CS_Disconnecting;
 441                         break;
 442                 case CSE_SetDenied:
 443                         m_state = CS_Denied;
 444                         break;
 445                 /* GotInit2 SetDefinitionsSent SetMediaSent */
 446                 default:
 447                         myerror << "Created: Invalid client state transition! " << event;
 448                         throw ClientStateError(myerror.str());
 449                 }
 450                 break;
 451         case CS_Denied:
 452                 /* don't do anything if in denied state */
 453                 break;
 454         case CS_HelloSent:
 455                 switch(event)
 456                 {
 457                 case CSE_AuthAccept:
 458                         m_state = CS_AwaitingInit2;
 459                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 460                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 461                                 srp_verifier_delete((SRPVerifier *) auth_data);
 462                         chosen_mech = AUTH_MECHANISM_NONE;
 463                         break;
 464                 case CSE_Disconnect:
 465                         m_state = CS_Disconnecting;
 466                         break;
 467                 case CSE_SetDenied:
 468                         m_state = CS_Denied;
 469                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 470                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 471                                 srp_verifier_delete((SRPVerifier *) auth_data);
 472                         chosen_mech = AUTH_MECHANISM_NONE;
 473                         break;
 474                 default:
 475                         myerror << "HelloSent: Invalid client state transition! " << event;
 476                         throw ClientStateError(myerror.str());
 477                 }
 478                 break;
 479         case CS_AwaitingInit2:
 480                 switch(event)
 481                 {
 482                 case CSE_GotInit2:
 483                         confirmSerializationVersion();
 484                         m_state = CS_InitDone;
 485                         break;
 486                 case CSE_Disconnect:
 487                         m_state = CS_Disconnecting;
 488                         break;
 489                 case CSE_SetDenied:
 490                         m_state = CS_Denied;
 491                         break;
 492
 493                 /* Init SetDefinitionsSent SetMediaSent */
 494                 default:
 495                         myerror << "InitSent: Invalid client state transition! " << event;
 496                         throw ClientStateError(myerror.str());
 497                 }
 498                 break;
 499
 500         case CS_InitDone:
 501                 switch(event)
 502                 {
 503                 case CSE_SetDefinitionsSent:
 504                         m_state = CS_DefinitionsSent;
 505                         break;
 506                 case CSE_Disconnect:
 507                         m_state = CS_Disconnecting;
 508                         break;
 509                 case CSE_SetDenied:
 510                         m_state = CS_Denied;
 511                         break;
 512
 513                 /* Init GotInit2 SetMediaSent */
 514                 default:
 515                         myerror << "InitDone: Invalid client state transition! " << event;
 516                         throw ClientStateError(myerror.str());
 517                 }
 518                 break;
 519         case CS_DefinitionsSent:
 520                 switch(event)
 521                 {
 522                 case CSE_SetClientReady:
 523                         m_state = CS_Active;
 524                         break;
 525                 case CSE_Disconnect:
 526                         m_state = CS_Disconnecting;
 527                         break;
 528                 case CSE_SetDenied:
 529                         m_state = CS_Denied;
 530                         break;
 531                 /* Init GotInit2 SetDefinitionsSent */
 532                 default:
 533                         myerror << "DefinitionsSent: Invalid client state transition! " << event;
 534                         throw ClientStateError(myerror.str());
 535                 }
 536                 break;
 537         case CS_Active:
 538                 switch(event)
 539                 {
 540                 case CSE_SetDenied:
 541                         m_state = CS_Denied;
 542                         break;
 543                 case CSE_Disconnect:
 544                         m_state = CS_Disconnecting;
 545                         break;
 546                 case CSE_SudoSuccess:
 547                         m_state = CS_SudoMode;
 548                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 549                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 550                                 srp_verifier_delete((SRPVerifier *) auth_data);
 551                         chosen_mech = AUTH_MECHANISM_NONE;
 552                         break;
 553                 /* Init GotInit2 SetDefinitionsSent SetMediaSent SetDenied */
 554                 default:
 555                         myerror << "Active: Invalid client state transition! " << event;
 556                         throw ClientStateError(myerror.str());
 557                         break;
 558                 }
 559                 break;
 560         case CS_SudoMode:
 561                 switch(event)
 562                 {
 563                 case CSE_SetDenied:
 564                         m_state = CS_Denied;
 565                         break;
 566                 case CSE_Disconnect:
 567                         m_state = CS_Disconnecting;
 568                         break;
 569                 case CSE_SudoLeave:
 570                         m_state = CS_Active;
 571                         break;
 572                 default:
 573                         myerror << "Active: Invalid client state transition! " << event;
 574                         throw ClientStateError(myerror.str());
 575                         break;
 576                 }
 577                 break;
 578         case CS_Disconnecting:
 579                 /* we are already disconnecting */
 580                 break;
 581         }
 582 }
 583
 584 u32 RemoteClient::uptime()
 585 {
 586         return getTime(PRECISION_SECONDS) - m_connection_time;
 587 }
 588
 589 ClientInterface::ClientInterface(con::Connection* con)
 590 :
 591         m_con(con),
 592         m_env(NULL),
 593         m_print_info_timer(0.0)
 594 {
 595
 596 }
 597 ClientInterface::~ClientInterface()
 598 {
 599         /*
 600                 Delete clients
 601         */
 602         {
 603                 MutexAutoLock clientslock(m_clients_mutex);
 604
 605                 for (UNORDERED_MAP<u16, RemoteClient*>::iterator i = m_clients.begin();
 606                         i != m_clients.end(); ++i) {
 607                         // Delete client
 608                         delete i->second;
 609                 }
 610         }
 611 }
 612
 613 std::vector<u16> ClientInterface::getClientIDs(ClientState min_state)
 614 {
 615         std::vector<u16> reply;
 616         MutexAutoLock clientslock(m_clients_mutex);
 617
 618         for(UNORDERED_MAP<u16, RemoteClient*>::iterator i = m_clients.begin();
 619                 i != m_clients.end(); ++i) {
 620                 if (i->second->getState() >= min_state)
 621                         reply.push_back(i->second->peer_id);
 622         }
 623
 624         return reply;
 625 }
 626
 627 void ClientInterface::step(float dtime)
 628 {
 629         m_print_info_timer += dtime;
 630         if(m_print_info_timer >= 30.0)
 631         {
 632                 m_print_info_timer = 0.0;
 633                 UpdatePlayerList();
 634         }
 635 }
 636
 637 void ClientInterface::UpdatePlayerList()
 638 {
 639         if (m_env != NULL) {
 640                 std::vector<u16> clients = getClientIDs();
 641                 m_clients_names.clear();
 642
 643
 644                 if(!clients.empty())
 645                         infostream<<"Players:"<<std::endl;
 646
 647                 for (std::vector<u16>::iterator i = clients.begin(); i != clients.end(); ++i) {
 648                         RemotePlayer *player = m_env->getPlayer(*i);
 649
 650                         if (player == NULL)
 651                                 continue;
 652
 653                         infostream << "* " << player->getName() << "\t";
 654
 655                         {
 656                                 MutexAutoLock clientslock(m_clients_mutex);
 657                                 RemoteClient* client = lockedGetClientNoEx(*i);
 658                                 if(client != NULL)
 659                                         client->PrintInfo(infostream);
 660                         }
 661
 662                         m_clients_names.push_back(player->getName());
 663                 }
 664         }
 665 }
 666
 667 void ClientInterface::send(u16 peer_id, u8 channelnum,
 668                 NetworkPacket* pkt, bool reliable)
 669 {
 670         m_con->Send(peer_id, channelnum, pkt, reliable);
 671 }
 672
 673 void ClientInterface::sendToAll(u16 channelnum,
 674                 NetworkPacket* pkt, bool reliable)
 675 {
 676         MutexAutoLock clientslock(m_clients_mutex);
 677         for(UNORDERED_MAP<u16, RemoteClient*>::iterator i = m_clients.begin();
 678                 i != m_clients.end(); ++i) {
 679                 RemoteClient *client = i->second;
 680
 681                 if (client->net_proto_version != 0) {
 682                         m_con->Send(client->peer_id, channelnum, pkt, reliable);
 683                 }
 684         }
 685 }
 686
 687 RemoteClient* ClientInterface::getClientNoEx(u16 peer_id, ClientState state_min)
 688 {
 689         MutexAutoLock clientslock(m_clients_mutex);
 690         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 691         // The client may not exist; clients are immediately removed if their
 692         // access is denied, and this event occurs later then.
 693         if (n == m_clients.end())
 694                 return NULL;
 695
 696         if (n->second->getState() >= state_min)
 697                 return n->second;
 698         else
 699                 return NULL;
 700 }
 701
 702 RemoteClient* ClientInterface::lockedGetClientNoEx(u16 peer_id, ClientState state_min)
 703 {
 704         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 705         // The client may not exist; clients are immediately removed if their
 706         // access is denied, and this event occurs later then.
 707         if (n == m_clients.end())
 708                 return NULL;
 709
 710         if (n->second->getState() >= state_min)
 711                 return n->second;
 712         else
 713                 return NULL;
 714 }
 715
 716 ClientState ClientInterface::getClientState(u16 peer_id)
 717 {
 718         MutexAutoLock clientslock(m_clients_mutex);
 719         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 720         // The client may not exist; clients are immediately removed if their
 721         // access is denied, and this event occurs later then.
 722         if (n == m_clients.end())
 723                 return CS_Invalid;
 724
 725         return n->second->getState();
 726 }
 727
 728 void ClientInterface::setPlayerName(u16 peer_id,std::string name)
 729 {
 730         MutexAutoLock clientslock(m_clients_mutex);
 731         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 732         // The client may not exist; clients are immediately removed if their
 733         // access is denied, and this event occurs later then.
 734         if (n != m_clients.end())
 735                 n->second->setName(name);
 736 }
 737
 738 void ClientInterface::DeleteClient(u16 peer_id)
 739 {
 740         MutexAutoLock conlock(m_clients_mutex);
 741
 742         // Error check
 743         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 744         // The client may not exist; clients are immediately removed if their
 745         // access is denied, and this event occurs later then.
 746         if (n == m_clients.end())
 747                 return;
 748
 749         /*
 750                 Mark objects to be not known by the client
 751         */
 752         //TODO this should be done by client destructor!!!
 753         RemoteClient *client = n->second;
 754         // Handle objects
 755         for(std::set<u16>::iterator
 756                         i = client->m_known_objects.begin();
 757                         i != client->m_known_objects.end(); ++i)
 758         {
 759                 // Get object
 760                 u16 id = *i;
 761                 ServerActiveObject* obj = m_env->getActiveObject(id);
 762
 763                 if(obj && obj->m_known_by_count > 0)
 764                         obj->m_known_by_count--;
 765         }
 766
 767         // Delete client
 768         delete m_clients[peer_id];
 769         m_clients.erase(peer_id);
 770 }
 771
 772 void ClientInterface::CreateClient(u16 peer_id)
 773 {
 774         MutexAutoLock conlock(m_clients_mutex);
 775
 776         // Error check
 777         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 778         // The client shouldn't already exist
 779         if (n != m_clients.end()) return;
 780
 781         // Create client
 782         RemoteClient *client = new RemoteClient();
 783         client->peer_id = peer_id;
 784         m_clients[client->peer_id] = client;
 785 }
 786
 787 void ClientInterface::event(u16 peer_id, ClientStateEvent event)
 788 {
 789         {
 790                 MutexAutoLock clientlock(m_clients_mutex);
 791
 792                 // Error check
 793                 UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 794
 795                 // No client to deliver event
 796                 if (n == m_clients.end())
 797                         return;
 798                 n->second->notifyEvent(event);
 799         }
 800
 801         if ((event == CSE_SetClientReady) ||
 802                 (event == CSE_Disconnect)     ||
 803                 (event == CSE_SetDenied))
 804         {
 805                 UpdatePlayerList();
 806         }
 807 }
 808
 809 u16 ClientInterface::getProtocolVersion(u16 peer_id)
 810 {
 811         MutexAutoLock conlock(m_clients_mutex);
 812
 813         // Error check
 814         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 815
 816         // No client to get version
 817         if (n == m_clients.end())
 818                 return 0;
 819
 820         return n->second->net_proto_version;
 821 }
 822
 823 void ClientInterface::setClientVersion(u16 peer_id, u8 major, u8 minor, u8 patch, std::string full)
 824 {
 825         MutexAutoLock conlock(m_clients_mutex);
 826
 827         // Error check
 828         UNORDERED_MAP<u16, RemoteClient*>::iterator n = m_clients.find(peer_id);
 829
 830         // No client to set versions
 831         if (n == m_clients.end())
 832                 return;
 833
 834         n->second->setVersionInfo(major,minor,patch,full);
 835 }