src/clientiface.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2014 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include <sstream>
  21
  22 #include "clientiface.h"
  23 #include "util/numeric.h"
  24 #include "util/mathconstants.h"
  25 #include "player.h"
  26 #include "settings.h"
  27 #include "mapblock.h"
  28 #include "network/connection.h"
  29 #include "environment.h"
  30 #include "map.h"
  31 #include "emerge.h"
  32 #include "serverobject.h"              // TODO this is used for cleanup of only
  33 #include "log.h"
  34 #include "util/srp.h"
  35
  36 const char *ClientInterface::statenames[] = {
  37         "Invalid",
  38         "Disconnecting",
  39         "Denied",
  40         "Created",
  41         "InitSent",
  42         "InitDone",
  43         "DefinitionsSent",
  44         "Active"
  45 };
  46
  47
  48
  49 std::string ClientInterface::state2Name(ClientState state)
  50 {
  51         return statenames[state];
  52 }
  53
  54 void RemoteClient::ResendBlockIfOnWire(v3s16 p)
  55 {
  56         // if this block is on wire, mark it for sending again as soon as possible
  57         if (m_blocks_sending.find(p) != m_blocks_sending.end()) {
  58                 SetBlockNotSent(p);
  59         }
  60 }
  61
  62 void RemoteClient::GetNextBlocks (
  63                 ServerEnvironment *env,
  64                 EmergeManager * emerge,
  65                 float dtime,
  66                 std::vector<PrioritySortedBlockTransfer> &dest)
  67 {
  68         DSTACK(__FUNCTION_NAME);
  69
  70
  71         // Increment timers
  72         m_nothing_to_send_pause_timer -= dtime;
  73         m_nearest_unsent_reset_timer += dtime;
  74
  75         if(m_nothing_to_send_pause_timer >= 0)
  76                 return;
  77
  78         Player *player = env->getPlayer(peer_id);
  79         // This can happen sometimes; clients and players are not in perfect sync.
  80         if(player == NULL)
  81                 return;
  82
  83         // Won't send anything if already sending
  84         if(m_blocks_sending.size() >= g_settings->getU16
  85                         ("max_simultaneous_block_sends_per_client"))
  86         {
  87                 //infostream<<"Not sending any blocks, Queue full."<<std::endl;
  88                 return;
  89         }
  90
  91         v3f playerpos = player->getPosition();
  92         v3f playerspeed = player->getSpeed();
  93         v3f playerspeeddir(0,0,0);
  94         if(playerspeed.getLength() > 1.0*BS)
  95                 playerspeeddir = playerspeed / playerspeed.getLength();
  96         // Predict to next block
  97         v3f playerpos_predicted = playerpos + playerspeeddir*MAP_BLOCKSIZE*BS;
  98
  99         v3s16 center_nodepos = floatToInt(playerpos_predicted, BS);
 100
 101         v3s16 center = getNodeBlockPos(center_nodepos);
 102
 103         // Camera position and direction
 104         v3f camera_pos = player->getEyePosition();
 105         v3f camera_dir = v3f(0,0,1);
 106         camera_dir.rotateYZBy(player->getPitch());
 107         camera_dir.rotateXZBy(player->getYaw());
 108
 109         /*infostream<<"camera_dir=("<<camera_dir.X<<","<<camera_dir.Y<<","
 110                         <<camera_dir.Z<<")"<<std::endl;*/
 111
 112         /*
 113                 Get the starting value of the block finder radius.
 114         */
 115
 116         if(m_last_center != center)
 117         {
 118                 m_nearest_unsent_d = 0;
 119                 m_last_center = center;
 120         }
 121
 122         /*infostream<<"m_nearest_unsent_reset_timer="
 123                         <<m_nearest_unsent_reset_timer<<std::endl;*/
 124
 125         // Reset periodically to workaround for some bugs or stuff
 126         if(m_nearest_unsent_reset_timer > 20.0)
 127         {
 128                 m_nearest_unsent_reset_timer = 0;
 129                 m_nearest_unsent_d = 0;
 130                 //infostream<<"Resetting m_nearest_unsent_d for "
 131                 //              <<server->getPlayerName(peer_id)<<std::endl;
 132         }
 133
 134         //s16 last_nearest_unsent_d = m_nearest_unsent_d;
 135         s16 d_start = m_nearest_unsent_d;
 136
 137         //infostream<<"d_start="<<d_start<<std::endl;
 138
 139         u16 max_simul_sends_setting = g_settings->getU16
 140                         ("max_simultaneous_block_sends_per_client");
 141         u16 max_simul_sends_usually = max_simul_sends_setting;
 142
 143         /*
 144                 Check the time from last addNode/removeNode.
 145
 146                 Decrease send rate if player is building stuff.
 147         */
 148         m_time_from_building += dtime;
 149         if(m_time_from_building < g_settings->getFloat(
 150                                 "full_block_send_enable_min_time_from_building"))
 151         {
 152                 max_simul_sends_usually
 153                         = LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS;
 154         }
 155
 156         /*
 157                 Number of blocks sending + number of blocks selected for sending
 158         */
 159         u32 num_blocks_selected = m_blocks_sending.size();
 160
 161         /*
 162                 next time d will be continued from the d from which the nearest
 163                 unsent block was found this time.
 164
 165                 This is because not necessarily any of the blocks found this
 166                 time are actually sent.
 167         */
 168         s32 new_nearest_unsent_d = -1;
 169
 170         const s16 full_d_max = g_settings->getS16("max_block_send_distance");
 171         s16 d_max = full_d_max;
 172         s16 d_max_gen = g_settings->getS16("max_block_generate_distance");
 173
 174         // Don't loop very much at a time
 175         s16 max_d_increment_at_time = 2;
 176         if(d_max > d_start + max_d_increment_at_time)
 177                 d_max = d_start + max_d_increment_at_time;
 178
 179         s32 nearest_emerged_d = -1;
 180         s32 nearest_emergefull_d = -1;
 181         s32 nearest_sent_d = -1;
 182         //bool queue_is_full = false;
 183
 184         s16 d;
 185         for(d = d_start; d <= d_max; d++) {
 186                 /*
 187                         Get the border/face dot coordinates of a "d-radiused"
 188                         box
 189                 */
 190                 std::vector<v3s16> list = FacePositionCache::getFacePositions(d);
 191
 192                 std::vector<v3s16>::iterator li;
 193                 for(li = list.begin(); li != list.end(); ++li) {
 194                         v3s16 p = *li + center;
 195
 196                         /*
 197                                 Send throttling
 198                                 - Don't allow too many simultaneous transfers
 199                                 - EXCEPT when the blocks are very close
 200
 201                                 Also, don't send blocks that are already flying.
 202                         */
 203
 204                         // Start with the usual maximum
 205                         u16 max_simul_dynamic = max_simul_sends_usually;
 206
 207                         // If block is very close, allow full maximum
 208                         if(d <= BLOCK_SEND_DISABLE_LIMITS_MAX_D)
 209                                 max_simul_dynamic = max_simul_sends_setting;
 210
 211                         // Don't select too many blocks for sending
 212                         if(num_blocks_selected >= max_simul_dynamic)
 213                         {
 214                                 //queue_is_full = true;
 215                                 goto queue_full_break;
 216                         }
 217
 218                         // Don't send blocks that are currently being transferred
 219                         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 220                                 continue;
 221
 222                         /*
 223                                 Do not go over-limit
 224                         */
 225                         if(p.X < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 226                         || p.X > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 227                         || p.Y < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 228                         || p.Y > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 229                         || p.Z < -MAP_GENERATION_LIMIT / MAP_BLOCKSIZE
 230                         || p.Z > MAP_GENERATION_LIMIT / MAP_BLOCKSIZE)
 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_sending.find(p) != m_blocks_sending.end())
 378                 m_blocks_sending.erase(p);
 379         else
 380         {
 381                 m_excess_gotblocks++;
 382         }
 383         m_blocks_sent.insert(p);
 384 }
 385
 386 void RemoteClient::SentBlock(v3s16 p)
 387 {
 388         if(m_blocks_sending.find(p) == m_blocks_sending.end())
 389                 m_blocks_sending[p] = 0.0;
 390         else
 391                 infostream<<"RemoteClient::SentBlock(): Sent block"
 392                                 " already in m_blocks_sending"<<std::endl;
 393 }
 394
 395 void RemoteClient::SetBlockNotSent(v3s16 p)
 396 {
 397         m_nearest_unsent_d = 0;
 398
 399         if(m_blocks_sending.find(p) != m_blocks_sending.end())
 400                 m_blocks_sending.erase(p);
 401         if(m_blocks_sent.find(p) != m_blocks_sent.end())
 402                 m_blocks_sent.erase(p);
 403 }
 404
 405 void RemoteClient::SetBlocksNotSent(std::map<v3s16, MapBlock*> &blocks)
 406 {
 407         m_nearest_unsent_d = 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
 415                 if(m_blocks_sending.find(p) != m_blocks_sending.end())
 416                         m_blocks_sending.erase(p);
 417                 if(m_blocks_sent.find(p) != m_blocks_sent.end())
 418                         m_blocks_sent.erase(p);
 419         }
 420 }
 421
 422 void RemoteClient::notifyEvent(ClientStateEvent event)
 423 {
 424         std::ostringstream myerror;
 425         switch (m_state)
 426         {
 427         case CS_Invalid:
 428                 //intentionally do nothing
 429                 break;
 430         case CS_Created:
 431                 switch (event) {
 432                 case CSE_Hello:
 433                         m_state = CS_HelloSent;
 434                         break;
 435                 case CSE_InitLegacy:
 436                         m_state = CS_AwaitingInit2;
 437                         break;
 438                 case CSE_Disconnect:
 439                         m_state = CS_Disconnecting;
 440                         break;
 441                 case CSE_SetDenied:
 442                         m_state = CS_Denied;
 443                         break;
 444                 /* GotInit2 SetDefinitionsSent SetMediaSent */
 445                 default:
 446                         myerror << "Created: Invalid client state transition! " << event;
 447                         throw ClientStateError(myerror.str());
 448                 }
 449                 break;
 450         case CS_Denied:
 451                 /* don't do anything if in denied state */
 452                 break;
 453         case CS_HelloSent:
 454                 switch(event)
 455                 {
 456                 case CSE_AuthAccept:
 457                         m_state = CS_AwaitingInit2;
 458                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 459                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 460                                 srp_verifier_delete((SRPVerifier *) auth_data);
 461                         chosen_mech = AUTH_MECHANISM_NONE;
 462                         break;
 463                 case CSE_Disconnect:
 464                         m_state = CS_Disconnecting;
 465                         break;
 466                 case CSE_SetDenied:
 467                         m_state = CS_Denied;
 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                 default:
 474                         myerror << "HelloSent: Invalid client state transition! " << event;
 475                         throw ClientStateError(myerror.str());
 476                 }
 477                 break;
 478         case CS_AwaitingInit2:
 479                 switch(event)
 480                 {
 481                 case CSE_GotInit2:
 482                         confirmSerializationVersion();
 483                         m_state = CS_InitDone;
 484                         break;
 485                 case CSE_Disconnect:
 486                         m_state = CS_Disconnecting;
 487                         break;
 488                 case CSE_SetDenied:
 489                         m_state = CS_Denied;
 490                         break;
 491
 492                 /* Init SetDefinitionsSent SetMediaSent */
 493                 default:
 494                         myerror << "InitSent: Invalid client state transition! " << event;
 495                         throw ClientStateError(myerror.str());
 496                 }
 497                 break;
 498
 499         case CS_InitDone:
 500                 switch(event)
 501                 {
 502                 case CSE_SetDefinitionsSent:
 503                         m_state = CS_DefinitionsSent;
 504                         break;
 505                 case CSE_Disconnect:
 506                         m_state = CS_Disconnecting;
 507                         break;
 508                 case CSE_SetDenied:
 509                         m_state = CS_Denied;
 510                         break;
 511
 512                 /* Init GotInit2 SetMediaSent */
 513                 default:
 514                         myerror << "InitDone: Invalid client state transition! " << event;
 515                         throw ClientStateError(myerror.str());
 516                 }
 517                 break;
 518         case CS_DefinitionsSent:
 519                 switch(event)
 520                 {
 521                 case CSE_SetClientReady:
 522                         m_state = CS_Active;
 523                         break;
 524                 case CSE_Disconnect:
 525                         m_state = CS_Disconnecting;
 526                         break;
 527                 case CSE_SetDenied:
 528                         m_state = CS_Denied;
 529                         break;
 530                 /* Init GotInit2 SetDefinitionsSent */
 531                 default:
 532                         myerror << "DefinitionsSent: Invalid client state transition! " << event;
 533                         throw ClientStateError(myerror.str());
 534                 }
 535                 break;
 536         case CS_Active:
 537                 switch(event)
 538                 {
 539                 case CSE_SetDenied:
 540                         m_state = CS_Denied;
 541                         break;
 542                 case CSE_Disconnect:
 543                         m_state = CS_Disconnecting;
 544                         break;
 545                 case CSE_SudoSuccess:
 546                         m_state = CS_SudoMode;
 547                         if ((chosen_mech == AUTH_MECHANISM_SRP)
 548                                         || (chosen_mech == AUTH_MECHANISM_LEGACY_PASSWORD))
 549                                 srp_verifier_delete((SRPVerifier *) auth_data);
 550                         chosen_mech = AUTH_MECHANISM_NONE;
 551                         break;
 552                 /* Init GotInit2 SetDefinitionsSent SetMediaSent SetDenied */
 553                 default:
 554                         myerror << "Active: Invalid client state transition! " << event;
 555                         throw ClientStateError(myerror.str());
 556                         break;
 557                 }
 558                 break;
 559         case CS_SudoMode:
 560                 switch(event)
 561                 {
 562                 case CSE_SetDenied:
 563                         m_state = CS_Denied;
 564                         break;
 565                 case CSE_Disconnect:
 566                         m_state = CS_Disconnecting;
 567                         break;
 568                 case CSE_SudoLeave:
 569                         m_state = CS_Active;
 570                         break;
 571                 default:
 572                         myerror << "Active: Invalid client state transition! " << event;
 573                         throw ClientStateError(myerror.str());
 574                         break;
 575                 }
 576                 break;
 577         case CS_Disconnecting:
 578                 /* we are already disconnecting */
 579                 break;
 580         }
 581 }
 582
 583 u32 RemoteClient::uptime()
 584 {
 585         return getTime(PRECISION_SECONDS) - m_connection_time;
 586 }
 587
 588 ClientInterface::ClientInterface(con::Connection* con)
 589 :
 590         m_con(con),
 591         m_env(NULL),
 592         m_print_info_timer(0.0)
 593 {
 594
 595 }
 596 ClientInterface::~ClientInterface()
 597 {
 598         /*
 599                 Delete clients
 600         */
 601         {
 602                 JMutexAutoLock clientslock(m_clients_mutex);
 603
 604                 for(std::map<u16, RemoteClient*>::iterator
 605                         i = m_clients.begin();
 606                         i != m_clients.end(); ++i)
 607                 {
 608
 609                         // Delete client
 610                         delete i->second;
 611                 }
 612         }
 613 }
 614
 615 std::vector<u16> ClientInterface::getClientIDs(ClientState min_state)
 616 {
 617         std::vector<u16> reply;
 618         JMutexAutoLock clientslock(m_clients_mutex);
 619
 620         for(std::map<u16, RemoteClient*>::iterator
 621                 i = m_clients.begin();
 622                 i != m_clients.end(); ++i)
 623         {
 624                 if (i->second->getState() >= min_state)
 625                         reply.push_back(i->second->peer_id);
 626         }
 627
 628         return reply;
 629 }
 630
 631 std::vector<std::string> ClientInterface::getPlayerNames()
 632 {
 633         return m_clients_names;
 634 }
 635
 636
 637 void ClientInterface::step(float dtime)
 638 {
 639         m_print_info_timer += dtime;
 640         if(m_print_info_timer >= 30.0)
 641         {
 642                 m_print_info_timer = 0.0;
 643                 UpdatePlayerList();
 644         }
 645 }
 646
 647 void ClientInterface::UpdatePlayerList()
 648 {
 649         if (m_env != NULL)
 650                 {
 651                 std::vector<u16> clients = getClientIDs();
 652                 m_clients_names.clear();
 653
 654
 655                 if(!clients.empty())
 656                         infostream<<"Players:"<<std::endl;
 657
 658                 for(std::vector<u16>::iterator
 659                         i = clients.begin();
 660                         i != clients.end(); ++i) {
 661                         Player *player = m_env->getPlayer(*i);
 662
 663                         if (player == NULL)
 664                                 continue;
 665
 666                         infostream << "* " << player->getName() << "\t";
 667
 668                         {
 669                                 JMutexAutoLock clientslock(m_clients_mutex);
 670                                 RemoteClient* client = lockedGetClientNoEx(*i);
 671                                 if(client != NULL)
 672                                         client->PrintInfo(infostream);
 673                         }
 674
 675                         m_clients_names.push_back(player->getName());
 676                 }
 677         }
 678 }
 679
 680 void ClientInterface::send(u16 peer_id, u8 channelnum,
 681                 NetworkPacket* pkt, bool reliable)
 682 {
 683         m_con->Send(peer_id, channelnum, pkt, reliable);
 684 }
 685
 686 void ClientInterface::sendToAll(u16 channelnum,
 687                 NetworkPacket* pkt, bool reliable)
 688 {
 689         JMutexAutoLock clientslock(m_clients_mutex);
 690         for(std::map<u16, RemoteClient*>::iterator
 691                 i = m_clients.begin();
 692                 i != m_clients.end(); ++i) {
 693                 RemoteClient *client = i->second;
 694
 695                 if (client->net_proto_version != 0) {
 696                         m_con->Send(client->peer_id, channelnum, pkt, reliable);
 697                 }
 698         }
 699 }
 700
 701 RemoteClient* ClientInterface::getClientNoEx(u16 peer_id, ClientState state_min)
 702 {
 703         JMutexAutoLock clientslock(m_clients_mutex);
 704         std::map<u16, RemoteClient*>::iterator n;
 705         n = m_clients.find(peer_id);
 706         // The client may not exist; clients are immediately removed if their
 707         // access is denied, and this event occurs later then.
 708         if(n == m_clients.end())
 709                 return NULL;
 710
 711         if (n->second->getState() >= state_min)
 712                 return n->second;
 713         else
 714                 return NULL;
 715 }
 716
 717 RemoteClient* ClientInterface::lockedGetClientNoEx(u16 peer_id, ClientState state_min)
 718 {
 719         std::map<u16, RemoteClient*>::iterator n;
 720         n = m_clients.find(peer_id);
 721         // The client may not exist; clients are immediately removed if their
 722         // access is denied, and this event occurs later then.
 723         if(n == m_clients.end())
 724                 return NULL;
 725
 726         if (n->second->getState() >= state_min)
 727                 return n->second;
 728         else
 729                 return NULL;
 730 }
 731
 732 ClientState ClientInterface::getClientState(u16 peer_id)
 733 {
 734         JMutexAutoLock clientslock(m_clients_mutex);
 735         std::map<u16, RemoteClient*>::iterator n;
 736         n = m_clients.find(peer_id);
 737         // The client may not exist; clients are immediately removed if their
 738         // access is denied, and this event occurs later then.
 739         if(n == m_clients.end())
 740                 return CS_Invalid;
 741
 742         return n->second->getState();
 743 }
 744
 745 void ClientInterface::setPlayerName(u16 peer_id,std::string name)
 746 {
 747         JMutexAutoLock clientslock(m_clients_mutex);
 748         std::map<u16, RemoteClient*>::iterator n;
 749         n = m_clients.find(peer_id);
 750         // The client may not exist; clients are immediately removed if their
 751         // access is denied, and this event occurs later then.
 752         if(n != m_clients.end())
 753                 n->second->setName(name);
 754 }
 755
 756 void ClientInterface::DeleteClient(u16 peer_id)
 757 {
 758         JMutexAutoLock conlock(m_clients_mutex);
 759
 760         // Error check
 761         std::map<u16, RemoteClient*>::iterator n;
 762         n = m_clients.find(peer_id);
 763         // The client may not exist; clients are immediately removed if their
 764         // access is denied, and this event occurs later then.
 765         if(n == m_clients.end())
 766                 return;
 767
 768         /*
 769                 Mark objects to be not known by the client
 770         */
 771         //TODO this should be done by client destructor!!!
 772         RemoteClient *client = n->second;
 773         // Handle objects
 774         for(std::set<u16>::iterator
 775                         i = client->m_known_objects.begin();
 776                         i != client->m_known_objects.end(); ++i)
 777         {
 778                 // Get object
 779                 u16 id = *i;
 780                 ServerActiveObject* obj = m_env->getActiveObject(id);
 781
 782                 if(obj && obj->m_known_by_count > 0)
 783                         obj->m_known_by_count--;
 784         }
 785
 786         // Delete client
 787         delete m_clients[peer_id];
 788         m_clients.erase(peer_id);
 789 }
 790
 791 void ClientInterface::CreateClient(u16 peer_id)
 792 {
 793         JMutexAutoLock conlock(m_clients_mutex);
 794
 795         // Error check
 796         std::map<u16, RemoteClient*>::iterator n;
 797         n = m_clients.find(peer_id);
 798         // The client shouldn't already exist
 799         if(n != m_clients.end()) return;
 800
 801         // Create client
 802         RemoteClient *client = new RemoteClient();
 803         client->peer_id = peer_id;
 804         m_clients[client->peer_id] = client;
 805 }
 806
 807 void ClientInterface::event(u16 peer_id, ClientStateEvent event)
 808 {
 809         {
 810                 JMutexAutoLock clientlock(m_clients_mutex);
 811
 812                 // Error check
 813                 std::map<u16, RemoteClient*>::iterator n;
 814                 n = m_clients.find(peer_id);
 815
 816                 // No client to deliver event
 817                 if (n == m_clients.end())
 818                         return;
 819                 n->second->notifyEvent(event);
 820         }
 821
 822         if ((event == CSE_SetClientReady) ||
 823                 (event == CSE_Disconnect)     ||
 824                 (event == CSE_SetDenied))
 825         {
 826                 UpdatePlayerList();
 827         }
 828 }
 829
 830 u16 ClientInterface::getProtocolVersion(u16 peer_id)
 831 {
 832         JMutexAutoLock conlock(m_clients_mutex);
 833
 834         // Error check
 835         std::map<u16, RemoteClient*>::iterator n;
 836         n = m_clients.find(peer_id);
 837
 838         // No client to get version
 839         if (n == m_clients.end())
 840                 return 0;
 841
 842         return n->second->net_proto_version;
 843 }
 844
 845 void ClientInterface::setClientVersion(u16 peer_id, u8 major, u8 minor, u8 patch, std::string full)
 846 {
 847         JMutexAutoLock conlock(m_clients_mutex);
 848
 849         // Error check
 850         std::map<u16, RemoteClient*>::iterator n;
 851         n = m_clients.find(peer_id);
 852
 853         // No client to set versions
 854         if (n == m_clients.end())
 855                 return;
 856
 857         n->second->setVersionInfo(major,minor,patch,full);
 858 }