src/netserv.c

   1 // ============================================================================
   2 // Rocks'n'Diamonds - McDuffin Strikes Back!
   3 // ----------------------------------------------------------------------------
   4 // (c) 1995-2014 by Artsoft Entertainment
   5 //                  Holger Schemel
   6 //                  info@artsoft.org
   7 //                  http://www.artsoft.org/
   8 // ----------------------------------------------------------------------------
   9 // netserv.c
  10 // ============================================================================
  11
  12 #include "libgame/platform.h"
  13
  14 #if defined(NETWORK_AVALIABLE)
  15
  16 #include <fcntl.h>
  17 #include <sys/time.h>
  18 #include <signal.h>
  19 #include <errno.h>
  20
  21 #if defined(TARGET_SDL)
  22 #include "main.h"
  23 #else
  24 #include <sys/socket.h>
  25 #include <netinet/in.h>
  26 #include <netinet/tcp.h>
  27 #include <arpa/inet.h>
  28 #include <netdb.h>
  29 #include <sys/select.h>                 /* apparently needed for OS/2 port */
  30 #endif
  31
  32 #include "libgame/libgame.h"
  33
  34 #include "netserv.h"
  35
  36 static int clients = 0;
  37 static int onceonly = 0;
  38
  39 struct NetworkServerPlayerInfo
  40 {
  41 #if defined(TARGET_SDL)
  42   TCPsocket fd;
  43 #else
  44   int fd;
  45 #endif
  46
  47   char player_name[16];
  48   unsigned char number;
  49   struct NetworkServerPlayerInfo *next;
  50   char active;
  51   char introduced;
  52   unsigned char readbuffer[MAX_BUFFER_SIZE];
  53   unsigned char writbuffer[MAX_BUFFER_SIZE];
  54   int nread, nwrite;
  55   byte action;
  56   boolean action_received;
  57 };
  58
  59 static struct NetworkServerPlayerInfo *first_player = NULL;
  60
  61 #define NEXT(player) ((player)->next ? (player)->next : first_player)
  62
  63 #if defined(TARGET_SDL)
  64 /* TODO: peer address */
  65 static TCPsocket lfd;           /* listening socket */
  66 static SDLNet_SocketSet fds;    /* socket set */
  67 #else
  68 static struct sockaddr_in saddr;
  69 static int lfd;                 /* listening socket */
  70 static fd_set fds;              /* socket set */
  71 static int tcp = -1;
  72 #endif
  73
  74 static unsigned char realbuffer[512], *buffer = realbuffer + 4;
  75
  76 static int interrupt;
  77
  78 static unsigned int ServerFrameCounter = 0;
  79
  80 static void addtobuffer(struct NetworkServerPlayerInfo *player,
  81                         unsigned char *b, int len)
  82 {
  83   if (player->nwrite + len >= MAX_BUFFER_SIZE)
  84     Error(ERR_EXIT_NETWORK_SERVER,
  85           "internal error: network send buffer overflow");
  86
  87   memcpy(player->writbuffer + player->nwrite, b, len);
  88   player->nwrite += len;
  89 }
  90
  91 static void flushuser(struct NetworkServerPlayerInfo *player)
  92 {
  93   if (player->nwrite)
  94   {
  95 #if defined(TARGET_SDL)
  96     SDLNet_TCP_Send(player->fd, player->writbuffer, player->nwrite);
  97 #else
  98     if (write(player->fd, player->writbuffer, player->nwrite) == -1)
  99       Error(ERR_WARN, "write() failed; %s", strerror(errno));
 100 #endif
 101     player->nwrite = 0;
 102   }
 103 }
 104
 105 static void broadcast(struct NetworkServerPlayerInfo *except,
 106                       int len, int activeonly)
 107 {
 108   struct NetworkServerPlayerInfo *player;
 109
 110   realbuffer[0] = realbuffer[1] = realbuffer[2] = 0;
 111   realbuffer[3] = (unsigned char)len;
 112   for (player = first_player; player; player = player->next)
 113     if (player != except && player->introduced &&
 114         (player->active || !activeonly))
 115       addtobuffer(player, realbuffer, 4 + len);
 116 }
 117
 118 static void sendtoone(struct NetworkServerPlayerInfo *to, int len)
 119 {
 120   realbuffer[0] = realbuffer[1] = realbuffer[2] = 0;
 121   realbuffer[3] = (unsigned char)len;
 122   addtobuffer(to, realbuffer, 4 + len);
 123 }
 124
 125 static void RemovePlayer(struct NetworkServerPlayerInfo *player)
 126 {
 127   struct NetworkServerPlayerInfo *v;
 128
 129   if (options.verbose)
 130     Error(ERR_NETWORK_SERVER, "dropping client %d (%s)",
 131           player->number, player->player_name);
 132
 133   if (player == first_player)
 134     first_player = player->next;
 135   else
 136   {
 137     for (v = first_player; v; v = v->next)
 138     {
 139       if (v->next && v->next == player)
 140       {
 141         v->next = player->next;
 142         break;
 143       }
 144     }
 145   }
 146
 147 #if defined(TARGET_SDL)
 148   SDLNet_TCP_DelSocket(fds, player->fd);
 149   SDLNet_TCP_Close(player->fd);
 150 #else
 151   close(player->fd);
 152 #endif
 153
 154   if (player->introduced)
 155   {
 156     buffer[0] = player->number;
 157     buffer[1] = OP_PLAYER_DISCONNECTED;
 158     broadcast(player, 2, 0);
 159   }
 160
 161   free(player);
 162   clients--;
 163
 164   if (onceonly && clients == 0)
 165   {
 166     if (options.verbose)
 167     {
 168       Error(ERR_NETWORK_SERVER, "no clients left");
 169       Error(ERR_NETWORK_SERVER, "aborting");
 170     }
 171     exit(0);
 172   }
 173 }
 174
 175 #if defined(TARGET_SDL)
 176 static void AddPlayer(TCPsocket fd)
 177 #else
 178 static void AddPlayer(int fd)
 179 #endif
 180 {
 181   struct NetworkServerPlayerInfo *player, *v;
 182   unsigned char nxn;
 183   boolean again = TRUE;
 184
 185   player = checked_malloc(sizeof (struct NetworkServerPlayerInfo));
 186
 187   player->fd = fd;
 188   player->player_name[0] = 0;
 189   player->next = first_player;
 190   player->active = 0;
 191   player->nread = 0;
 192   player->nwrite = 0;
 193   player->introduced = 0;
 194   player->action = 0;
 195   player->action_received = FALSE;
 196
 197 #if defined(TARGET_SDL)
 198   SDLNet_TCP_AddSocket(fds, fd);
 199 #endif
 200
 201   first_player = player;
 202
 203   nxn = 1;
 204
 205   while (again)
 206   {
 207     again = FALSE;
 208     v = player->next;
 209
 210     while (v)
 211     {
 212       if (v->number == nxn)
 213       {
 214         nxn++;
 215
 216         again = TRUE;
 217         break;
 218       }
 219       v = v->next;
 220     }
 221   }
 222
 223   player->number = nxn;
 224 #if !defined(TARGET_SDL)
 225   if (options.verbose)
 226     Error(ERR_NETWORK_SERVER, "client %d connecting from %s",
 227           nxn, inet_ntoa(saddr.sin_addr));
 228 #endif
 229   clients++;
 230
 231   buffer[0] = 0;
 232   buffer[1] = OP_YOUR_NUMBER;
 233   buffer[2] = player->number;
 234   sendtoone(player, 3);
 235 }
 236
 237 static void Handle_OP_PROTOCOL_VERSION(struct NetworkServerPlayerInfo *player,
 238                                        unsigned int len)
 239 {
 240   if (len != 5 ||
 241       buffer[2] != PROTOCOL_VERSION_1 ||
 242       buffer[3] != PROTOCOL_VERSION_2)
 243   {
 244     if (options.verbose)
 245       Error(ERR_NETWORK_SERVER,
 246             "client %d (%s) has wrong protocol version %d.%d.%d",
 247             player->number, player->player_name, buffer[2], buffer[3], buffer[4]);
 248
 249     buffer[0] = 0;
 250     buffer[1] = OP_BAD_PROTOCOL_VERSION;
 251     buffer[2] = PROTOCOL_VERSION_1;
 252     buffer[3] = PROTOCOL_VERSION_2;
 253     buffer[4] = PROTOCOL_VERSION_3;
 254     sendtoone(player, 5);
 255     flushuser(player);
 256
 257     RemovePlayer(player);
 258     interrupt = 1;
 259   }
 260   else
 261   {
 262     if (options.verbose)
 263       Error(ERR_NETWORK_SERVER,
 264             "client %d (%s) uses protocol version %d.%d.%d",
 265             player->number, player->player_name, buffer[2], buffer[3], buffer[4]);
 266   }
 267 }
 268
 269 static void Handle_OP_NUMBER_WANTED(struct NetworkServerPlayerInfo *player)
 270 {
 271   struct NetworkServerPlayerInfo *v;
 272   int client_nr = player->number;
 273   int nr_wanted = buffer[2];
 274   int nr_is_free = 1;
 275
 276   if (options.verbose)
 277       Error(ERR_NETWORK_SERVER, "client %d (%s) wants to switch to # %d",
 278             player->number, player->player_name, nr_wanted);
 279
 280   for (v = first_player; v; v = v->next)
 281   {
 282     if (v->number == nr_wanted)
 283     {
 284       nr_is_free = 0;
 285       break;
 286     }
 287   }
 288
 289   if (options.verbose)
 290   {
 291     if (nr_is_free)
 292       Error(ERR_NETWORK_SERVER, "client %d (%s) switches to # %d",
 293             player->number, player->player_name, nr_wanted);
 294     else if (player->number == nr_wanted)
 295       Error(ERR_NETWORK_SERVER, "client %d (%s) already has # %d",
 296             player->number, player->player_name, nr_wanted);
 297     else
 298       Error(ERR_NETWORK_SERVER,
 299             "client %d (%s) cannot switch (client %d already exists)",
 300             player->number, player->player_name, nr_wanted);
 301   }
 302
 303   if (nr_is_free)
 304     player->number = nr_wanted;
 305
 306   buffer[0] = client_nr;
 307   buffer[1] = OP_NUMBER_WANTED;
 308   buffer[2] = nr_wanted;
 309   buffer[3] = player->number;
 310
 311   /*
 312   sendtoone(player, 4);
 313   */
 314
 315   broadcast(NULL, 4, 0);
 316 }
 317
 318 static void Handle_OP_PLAYER_NAME(struct NetworkServerPlayerInfo *player,
 319                                   unsigned int len)
 320 {
 321   struct NetworkServerPlayerInfo *v;
 322   int i;
 323
 324   if (len>16)
 325     len=16;
 326   memcpy(player->player_name, &buffer[2], len-2);
 327   player->player_name[len-2] = 0;
 328   for (i = 0; i < len - 2; i++)
 329   {
 330     if (player->player_name[i] < ' ' ||
 331         ((unsigned char)(player->player_name[i]) > 0x7e &&
 332          (unsigned char)(player->player_name[i]) <= 0xa0))
 333     {
 334       player->player_name[i] = 0;
 335       break;
 336     }
 337   }
 338
 339   if (!player->introduced)
 340   {
 341     buffer[0] = player->number;
 342     buffer[1] = OP_PLAYER_CONNECTED;
 343     broadcast(player, 2, 0);
 344   }
 345
 346   if (options.verbose)
 347     Error(ERR_NETWORK_SERVER, "client %d calls itself \"%s\"",
 348           player->number, player->player_name);
 349   buffer[1] = OP_PLAYER_NAME;
 350   broadcast(player, len, 0);
 351
 352   if (!player->introduced)
 353   {
 354     for (v = first_player; v; v = v->next)
 355     {
 356       if (v != player && v->introduced)
 357       {
 358         buffer[0] = v->number;
 359         buffer[1] = OP_PLAYER_CONNECTED;
 360         sendtoone(player, 2);
 361         buffer[1] = OP_PLAYER_NAME;
 362         memcpy(&buffer[2], v->player_name, 14);
 363         sendtoone(player, 2+strlen(v->player_name));
 364       }
 365     }
 366   }
 367
 368   player->introduced = 1;
 369 }
 370
 371 static void Handle_OP_START_PLAYING(struct NetworkServerPlayerInfo *player)
 372 {
 373   struct NetworkServerPlayerInfo *v, *w;
 374
 375   if (options.verbose)
 376     Error(ERR_NETWORK_SERVER,
 377           "client %d (%s) starts game [level %d from leveldir %d (%s)]",
 378           player->number, player->player_name,
 379           (buffer[2] << 8) + buffer[3],
 380           (buffer[4] << 8) + buffer[5],
 381           &buffer[10]);
 382
 383   for (w = first_player; w; w = w->next)
 384     if (w->introduced)
 385       w->active = 1;
 386
 387   /* reset frame counter */
 388   ServerFrameCounter = 0;
 389
 390   Error(ERR_NETWORK_SERVER, "resetting ServerFrameCounter to 0");
 391
 392   /* reset player actions */
 393   for (v = first_player; v; v = v->next)
 394   {
 395     v->action = 0;
 396     v->action_received = FALSE;
 397   }
 398
 399   broadcast(NULL, 10 + strlen((char *)&buffer[10])+1, 0);
 400 }
 401
 402 static void Handle_OP_PAUSE_PLAYING(struct NetworkServerPlayerInfo *player)
 403 {
 404   if (options.verbose)
 405     Error(ERR_NETWORK_SERVER, "client %d (%s) pauses game",
 406           player->number, player->player_name);
 407   broadcast(NULL, 2, 0);
 408 }
 409
 410 static void Handle_OP_CONTINUE_PLAYING(struct NetworkServerPlayerInfo *player)
 411 {
 412   if (options.verbose)
 413     Error(ERR_NETWORK_SERVER, "client %d (%s) continues game",
 414           player->number, player->player_name);
 415   broadcast(NULL, 2, 0);
 416 }
 417
 418 static void Handle_OP_STOP_PLAYING(struct NetworkServerPlayerInfo *player)
 419 {
 420   int cause_for_stopping = buffer[2];
 421
 422   if (options.verbose)
 423     Error(ERR_NETWORK_SERVER, "client %d (%s) stops game [%d]",
 424           player->number, player->player_name, cause_for_stopping);
 425   broadcast(NULL, 3, 0);
 426 }
 427
 428 static void Handle_OP_MOVE_PLAYER(struct NetworkServerPlayerInfo *player)
 429 {
 430   struct NetworkServerPlayerInfo *v;
 431   int last_client_nr = 0;
 432   int i;
 433
 434   /* store player action */
 435   for (v = first_player; v; v = v->next)
 436   {
 437     if (v->number == player->number)
 438     {
 439       v->action = buffer[2];
 440       v->action_received = TRUE;
 441     }
 442   }
 443
 444   /* check if server received action from each player */
 445   for (v = first_player; v; v = v->next)
 446   {
 447     if (!v->action_received)
 448       return;
 449
 450     if (v->number > last_client_nr)
 451       last_client_nr = v->number;
 452   }
 453
 454   /* initialize all player actions to zero */
 455   for (i = 0; i < last_client_nr; i++)
 456     buffer[6 + i] = 0;
 457
 458   /* broadcast actions of all players to all players */
 459   for (v = first_player; v; v = v->next)
 460   {
 461     buffer[6 + v->number-1] = v->action;
 462     v->action = 0;
 463     v->action_received = FALSE;
 464   }
 465
 466   buffer[2] = (unsigned char)((ServerFrameCounter >> 24) & 0xff);
 467   buffer[3] = (unsigned char)((ServerFrameCounter >> 16) & 0xff);
 468   buffer[4] = (unsigned char)((ServerFrameCounter >>  8) & 0xff);
 469   buffer[5] = (unsigned char)((ServerFrameCounter >>  0) & 0xff);
 470
 471   broadcast(NULL, 6 + last_client_nr, 0);
 472
 473 #if 0
 474   Error(ERR_NETWORK_SERVER, "sending ServerFrameCounter value %d",
 475         ServerFrameCounter);
 476 #endif
 477
 478   ServerFrameCounter++;
 479 }
 480
 481 #if defined(TARGET_SDL)
 482 /* the following is not used for a standalone server;
 483    the pointer points to an integer containing the port-number */
 484 int NetworkServerThread(void *ptr)
 485 {
 486   NetworkServer(*((int *) ptr), 0);
 487
 488   /* should never be reached */
 489   return 0;
 490 }
 491 #endif
 492
 493 void NetworkServer(int port, int serveronly)
 494 {
 495   int sl;
 496   struct NetworkServerPlayerInfo *player;
 497   int r;
 498   unsigned int len;
 499 #if defined(TARGET_SDL)
 500   IPaddress ip;
 501 #else
 502   int i, on;
 503   int is_daemon = 0;
 504   struct protoent *tcpproto;
 505   struct timeval tv;
 506   int mfd;
 507 #endif
 508
 509 #if defined(PLATFORM_UNIX) && !defined(PLATFORM_NEXT)
 510   struct sigaction sact;
 511 #endif
 512
 513   if (port == 0)
 514     port = DEFAULT_SERVER_PORT;
 515
 516   if (!serveronly)
 517     onceonly = 1;
 518
 519 #if !defined(TARGET_SDL)
 520   if ((tcpproto = getprotobyname("tcp")) != NULL)
 521     tcp = tcpproto->p_proto;
 522 #endif
 523
 524 #if defined(PLATFORM_UNIX)
 525 #if defined(PLATFORM_NEXT)
 526   signal(SIGPIPE, SIG_IGN);
 527 #else
 528   sact.sa_handler = SIG_IGN;
 529   sigemptyset(&sact.sa_mask);
 530   sact.sa_flags = 0;
 531   sigaction(SIGPIPE, &sact, NULL);
 532 #endif
 533 #endif
 534
 535 #if defined(TARGET_SDL)
 536
 537   /* assume that SDL is already initialized */
 538 #if 0
 539   if (SDLNet_Init() == -1)
 540     Error(ERR_EXIT_NETWORK_SERVER, "SDLNet_Init() failed");
 541   atexit(SDLNet_Quit);
 542 #endif
 543
 544   if (SDLNet_ResolveHost(&ip, NULL, port) == -1)
 545     Error(ERR_EXIT_NETWORK_SERVER, "SDLNet_ResolveHost() failed");
 546
 547   lfd = SDLNet_TCP_Open(&ip);
 548   if (!lfd)
 549     Error(ERR_EXIT_NETWORK_SERVER, "SDLNet_TCP_Open() failed");
 550
 551   fds = SDLNet_AllocSocketSet(MAX_PLAYERS+1);
 552   SDLNet_TCP_AddSocket(fds, lfd);
 553
 554 #else
 555
 556   if ((lfd = socket(PF_INET, SOCK_STREAM, 0)) < 0)
 557     Error(ERR_EXIT_NETWORK_SERVER, "socket() failed");
 558
 559   saddr.sin_family = AF_INET;
 560   saddr.sin_addr.s_addr = htonl(INADDR_ANY);
 561   saddr.sin_port = htons(port);
 562
 563   on = 1;
 564
 565   setsockopt(lfd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(int));
 566   if (bind(lfd, (struct sockaddr *)&saddr, sizeof(saddr)) < 0)
 567     Error(ERR_EXIT_NETWORK_SERVER, "bind() failed");
 568
 569   listen(lfd, 5);
 570 #endif
 571
 572 #if !defined(TARGET_SDL)
 573   if (is_daemon)
 574   {
 575     /* become a daemon, breaking all ties with the controlling terminal */
 576     options.verbose = FALSE;
 577     for (i = 0; i < 255; i++)
 578     {
 579       if (i != lfd)
 580         close(i);
 581     }
 582
 583     if (fork())
 584       exit(0);
 585     setsid();
 586     if (fork())
 587       exit(0);
 588     if (chdir("/") == -1)
 589       Error(ERR_WARN, "chdir() failed; %s", strerror(errno));
 590
 591     /* open a fake stdin, stdout, stderr, just in case */
 592     open("/dev/null", O_RDONLY);
 593     open("/dev/null", O_WRONLY);
 594     open("/dev/null", O_WRONLY);
 595   }
 596 #endif
 597
 598   if (options.verbose)
 599   {
 600     Error(ERR_NETWORK_SERVER, "started up, listening on port %d", port);
 601     Error(ERR_NETWORK_SERVER, "using protocol version %d.%d.%d",
 602           PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, PROTOCOL_VERSION_3);
 603   }
 604
 605   while (1)
 606   {
 607     interrupt = 0;
 608
 609     for (player = first_player; player; player = player->next)
 610       flushuser(player);
 611
 612 #if defined(TARGET_SDL)
 613     if ((sl = SDLNet_CheckSockets(fds, 500000)) < 1)
 614     {
 615       Error(ERR_NETWORK_SERVER, "SDLNet_CheckSockets failed: %s",
 616             SDLNet_GetError());
 617       perror("SDLNet_CheckSockets");
 618     }
 619
 620 #else
 621
 622     FD_ZERO(&fds);
 623     mfd = lfd;
 624     player = first_player;
 625     while (player)
 626     {
 627       FD_SET(player->fd, &fds);
 628       if (player->fd > mfd)
 629         mfd = player->fd;
 630       player = player->next;
 631     }
 632     FD_SET(lfd, &fds);
 633     tv.tv_sec = 0;
 634     tv.tv_usec = 500000;
 635     if ((sl = select(mfd + 1, &fds, NULL, NULL, &tv)) < 0)
 636     {
 637       if (errno != EINTR)
 638         Error(ERR_EXIT_NETWORK_SERVER, "select() failed");
 639       else
 640         continue;
 641     }
 642 #endif
 643
 644     if (sl < 0)
 645       continue;
 646
 647     if (sl == 0)
 648       continue;
 649
 650     /* accept incoming connections */
 651 #if defined(TARGET_SDL)
 652     if (SDLNet_SocketReady(lfd))
 653     {
 654       TCPsocket newsock;
 655
 656       newsock = SDLNet_TCP_Accept(lfd);
 657
 658       if (newsock)
 659         AddPlayer(newsock);
 660     }
 661
 662 #else
 663
 664     if (FD_ISSET(lfd, &fds))
 665     {
 666       int newfd;
 667       socklen_t slen;
 668
 669       slen = sizeof(saddr);
 670       newfd = accept(lfd, (struct sockaddr *)&saddr, &slen);
 671       if (newfd < 0)
 672       {
 673         if (errno != EINTR)
 674           Error(ERR_EXIT_NETWORK_SERVER, "accept() failed");
 675       }
 676       else
 677       {
 678         if (tcp != -1)
 679         {
 680           on = 1;
 681           setsockopt(newfd, tcp, TCP_NODELAY, (char *)&on, sizeof(int));
 682         }
 683         AddPlayer(newfd);
 684       }
 685       continue;
 686     }
 687 #endif
 688
 689     player = first_player;
 690
 691     do
 692     {
 693 #if defined(TARGET_SDL)
 694       if (SDLNet_SocketReady(player->fd))
 695 #else
 696       if (FD_ISSET(player->fd, &fds))
 697 #endif
 698       {
 699 #if defined(TARGET_SDL)
 700         /* read only 1 byte, because SDLNet blocks when we want more than is
 701            in the buffer */
 702         r = SDLNet_TCP_Recv(player->fd, player->readbuffer + player->nread, 1);
 703 #else
 704         r = read(player->fd, player->readbuffer + player->nread,
 705                  MAX_BUFFER_SIZE - player->nread);
 706 #endif
 707
 708         if (r <= 0)
 709         {
 710           if (options.verbose)
 711             Error(ERR_NETWORK_SERVER, "EOF from client %d (%s)",
 712                   player->number, player->player_name);
 713           RemovePlayer(player);
 714           interrupt = 1;
 715           break;
 716         }
 717         player->nread += r;
 718         while (player->nread >= 4 && player->nread >= 4 + player->readbuffer[3])
 719         {
 720           len = player->readbuffer[3];
 721           if (player->readbuffer[0] || player->readbuffer[1] || player->readbuffer[2])
 722           {
 723             if (options.verbose)
 724               Error(ERR_NETWORK_SERVER, "crap from client %d (%s)",
 725                     player->number, player->player_name);
 726             RemovePlayer(player);
 727             interrupt = 1;
 728             break;
 729           }
 730           memcpy(buffer, &player->readbuffer[4], len);
 731           player->nread -= 4 + len;
 732           memmove(player->readbuffer, player->readbuffer + 4 + len, player->nread);
 733
 734           buffer[0] = player->number;
 735           if (!player->introduced && buffer[1] != OP_PLAYER_NAME)
 736           {
 737             if (options.verbose)
 738               Error(ERR_NETWORK_SERVER, "!(client %d)->introduced && buffer[1]==%d (expected OP_PLAYER_NAME)", buffer[0], buffer[1]);
 739
 740             RemovePlayer(player);
 741             interrupt = 1;
 742             break;
 743           }
 744
 745           switch (buffer[1])
 746           {
 747             case OP_PLAYER_NAME:
 748               Handle_OP_PLAYER_NAME(player, len);
 749               break;
 750
 751             case OP_PROTOCOL_VERSION:
 752               Handle_OP_PROTOCOL_VERSION(player, len);
 753               break;
 754
 755             case OP_NUMBER_WANTED:
 756               Handle_OP_NUMBER_WANTED(player);
 757               break;
 758
 759             case OP_START_PLAYING:
 760               Handle_OP_START_PLAYING(player);
 761               break;
 762
 763             case OP_PAUSE_PLAYING:
 764               Handle_OP_PAUSE_PLAYING(player);
 765               break;
 766
 767             case OP_CONTINUE_PLAYING:
 768               Handle_OP_CONTINUE_PLAYING(player);
 769               break;
 770
 771             case OP_STOP_PLAYING:
 772               Handle_OP_STOP_PLAYING(player);
 773               break;
 774
 775             case OP_MOVE_PLAYER:
 776               Handle_OP_MOVE_PLAYER(player);
 777               break;
 778
 779             case OP_BROADCAST_MESSAGE:
 780               buffer[len] = '\0';
 781               if (options.verbose)
 782                 Error(ERR_NETWORK_SERVER, "client %d (%s) sends message: %s",
 783                       player->number, player->player_name, &buffer[2]);
 784               broadcast(player, len, 0);
 785               break;
 786
 787             default:
 788               if (options.verbose)
 789                 Error(ERR_NETWORK_SERVER,
 790                       "unknown opcode %d from client %d (%s)",
 791                       buffer[0], player->number, player->player_name);
 792           }
 793         }
 794       }
 795
 796       if (player && !interrupt)
 797         player = player->next;
 798     }
 799     while (player && !interrupt);
 800   }
 801 }
 802
 803 #endif /* NETWORK_AVALIABLE */