epan/dissectors/packet-quake3.c

   1 /* packet-quake3.c
   2  * Routines for Quake III Arena packet dissection
   3  *
   4  * Uwe Girlich <uwe@planetquake.com>
   5  *
   6  * $Id$
   7  *
   8  * Ethereal - Network traffic analyzer
   9  * By Gerald Combs <gerald@ethereal.com>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * Copied from packet-quake2.c
  13  *
  14  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License
  16  * as published by the Free Software Foundation; either version 2
  17  * of the License, or (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  27  */
  28
  29
  30 /*
  31    All informations used in this decoding were gathered from
  32         * some own captures of a private server,
  33         * the "Server commands howto" document written by id Software
  34                 (http://www.quake3arena.com/tech/ServerCommandsHowto.html)
  35         * source code of the game server browser tool qstat
  36                 (http://www.qstat.org).
  37 */
  38
  39
  40 #ifdef HAVE_CONFIG_H
  41 # include "config.h"
  42 #endif
  43
  44 #include <string.h>
  45 #include <glib.h>
  46 #include <epan/packet.h>
  47 #include "prefs.h"
  48 #include <epan/resolv.h>
  49
  50 static int proto_quake3 = -1;
  51
  52 static int hf_quake3_direction = -1;
  53 static int hf_quake3_connectionless = -1;
  54 static int hf_quake3_game = -1;
  55 static int hf_quake3_connectionless_marker = -1;
  56 static int hf_quake3_connectionless_text = -1;
  57 static int hf_quake3_connectionless_command = -1;
  58 static int hf_quake3_server_addr = -1;
  59 static int hf_quake3_server_port = -1;
  60 static int hf_quake3_game_seq1 = -1;
  61 static int hf_quake3_game_rel1 = -1;
  62 static int hf_quake3_game_seq2 = -1;
  63 static int hf_quake3_game_rel2 = -1;
  64 static int hf_quake3_game_qport = -1;
  65
  66 static gint ett_quake3 = -1;
  67 static gint ett_quake3_connectionless = -1;
  68 static gint ett_quake3_connectionless_text = -1;
  69 static gint ett_quake3_server = -1;
  70 static gint ett_quake3_game = -1;
  71 static gint ett_quake3_game_seq1 = -1;
  72 static gint ett_quake3_game_seq2 = -1;
  73 static gint ett_quake3_game_clc = -1;
  74 static gint ett_quake3_game_svc = -1;
  75
  76 static dissector_handle_t data_handle;
  77
  78 #define QUAKE3_SERVER_PORT 27960
  79 #define QUAKE3_MASTER_PORT 27950
  80 static unsigned int gbl_quake3_server_port=QUAKE3_SERVER_PORT;
  81 static unsigned int gbl_quake3_master_port=QUAKE3_MASTER_PORT;
  82
  83
  84 static const value_string names_direction[] = {
  85 #define DIR_UNKNOWN 0
  86         { DIR_UNKNOWN, "Unknown" },
  87 #define DIR_C2S 1
  88         { DIR_C2S, "Client to Server" },
  89 #define DIR_S2C 2
  90         { DIR_S2C, "Server to Client" },
  91 #define DIR_C2M 3
  92         { DIR_C2M, "Client to Master" },
  93 #define DIR_M2C 4
  94         { DIR_M2C, "Master to Client" },
  95         { 0, NULL }
  96 };
  97
  98
  99 #define string_starts_with(s1, s2) (strncmp((s1), (s2), strlen(s2)) == 0)
 100
 101
 102 static const value_string names_command[] = {
 103 #define COMMAND_UNKNOWN                 0
 104         { COMMAND_UNKNOWN,              "Unknown" },
 105 #define COMMAND_statusResponse          1
 106         { COMMAND_statusResponse,       "Reply Status" },
 107 #define COMMAND_getstatus               2
 108         { COMMAND_getstatus,            "Request Status" },
 109 #define COMMAND_infoResponse            3
 110         { COMMAND_infoResponse,         "Reply Info" },
 111 #define COMMAND_getinfo                 4
 112         { COMMAND_getinfo,              "Request Info" },
 113 #define COMMAND_challengeResponse       5
 114         { COMMAND_challengeResponse,    "Reply Challenge" },
 115 #define COMMAND_getchallenge            6
 116         { COMMAND_getchallenge,         "Request Challenge" },
 117 #define COMMAND_connectResponse         7
 118         { COMMAND_connectResponse,      "Reply Connect" },
 119 #define COMMAND_connect                 8
 120         { COMMAND_connect,              "Request Connect" },
 121 #define COMMAND_rconResponse            9
 122         { COMMAND_rconResponse,         "Reply Remote Command" },
 123 #define COMMAND_rcon                    10
 124         { COMMAND_rcon,                 "Request Remote Command" },
 125 #define COMMAND_getmotdResponse         11
 126         { COMMAND_getmotdResponse,      "Reply Motto of the Day" },
 127 #define COMMAND_getmotd                 12
 128         { COMMAND_getmotd,              "Request Motto of the Day" },
 129 #define COMMAND_getserversResponse      13
 130         { COMMAND_getserversResponse,   "Reply Servers" },
 131 #define COMMAND_getservers              14
 132         { COMMAND_getservers,           "Request Servers" },
 133 #define COMMAND_getKeyAuthorize         15
 134         { COMMAND_getKeyAuthorize,      "Request Key Authorization" },
 135 #define COMMAND_getIpAuthorize          16
 136         { COMMAND_getIpAuthorize,       "Request IP Authorization" },
 137 #define COMMAND_ipAuthorize             17
 138         { COMMAND_ipAuthorize,          "Reply IP Authorization" },
 139         { 0, NULL }
 140 };
 141
 142
 143 static void
 144 dissect_quake3_ConnectionlessPacket(tvbuff_t *tvb, packet_info *pinfo _U_,
 145         proto_tree *tree, int* direction)
 146 {
 147         proto_tree      *cl_tree = NULL;
 148         proto_item      *cl_item = NULL;
 149         proto_item      *text_item = NULL;
 150         proto_tree      *text_tree = NULL;
 151         guint8          text[2048];
 152         int             len;
 153         int             offset;
 154         guint32         marker;
 155         int             command;
 156         int             command_len;
 157         int             command_finished = FALSE;
 158
 159         marker = tvb_get_ntohl(tvb, 0);
 160         if (tree) {
 161                 cl_item = proto_tree_add_text(tree, tvb,
 162                                 0, -1, "Connectionless");
 163                 if (cl_item)
 164                         cl_tree = proto_item_add_subtree(
 165                                 cl_item, ett_quake3_connectionless);
 166         }
 167
 168         if (cl_tree) {
 169                 proto_tree_add_uint(cl_tree, hf_quake3_connectionless_marker,
 170                                 tvb, 0, 4, marker);
 171         }
 172
 173         /* all the rest of the packet is just text */
 174         offset = 4;
 175
 176         len = tvb_get_nstringz0(tvb, offset, sizeof(text), text);
 177         if (cl_tree) {
 178                 text_item = proto_tree_add_string(cl_tree,
 179                                 hf_quake3_connectionless_text,
 180                                 tvb, offset, len + 1, text);
 181                 if (text_item) {
 182                         text_tree = proto_item_add_subtree(
 183                                         text_item,
 184                                         ett_quake3_connectionless_text);
 185                 }
 186         }
 187
 188         command = COMMAND_UNKNOWN;
 189         command_len = 0;
 190
 191         if (strncmp(text, "statusResponse", 14) == 0) {
 192                 command = COMMAND_statusResponse;
 193                 *direction = DIR_S2C;
 194                 command_len = 14;
 195         }
 196         else if (strncmp(text, "getstatus", 9) == 0) {
 197                 command = COMMAND_getstatus;
 198                 *direction = DIR_C2S;
 199                 command_len = 9;
 200         }
 201         else if (strncmp(text, "infoResponse", 12) == 0) {
 202                 command = COMMAND_infoResponse;
 203                 *direction = DIR_S2C;
 204                 command_len = 12;
 205         }
 206         else if (strncmp(text, "getinfo", 7) == 0) {
 207                 command = COMMAND_getinfo;
 208                 *direction = DIR_C2S;
 209                 command_len = 7;
 210         }
 211         else if (strncmp(text, "challengeResponse", 17) == 0) {
 212                 command = COMMAND_challengeResponse;
 213                 *direction = DIR_S2C;
 214                 command_len = 17;
 215         }
 216         else if (strncmp(text, "getchallenge", 12) == 0) {
 217                 command = COMMAND_getchallenge;
 218                 *direction = DIR_C2S;
 219                 command_len = 12;
 220         }
 221         else if (strncmp(text, "connectResponse", 15) == 0) {
 222                 command = COMMAND_connectResponse;
 223                 *direction = DIR_S2C;
 224                 command_len = 15;
 225         }
 226         else if (strncmp(text, "connect", 7) == 0) {
 227                 command = COMMAND_connect;
 228                 *direction = DIR_C2S;
 229                 command_len = 7;
 230         }
 231         else if (strncmp(text, "rconResponse", 12) == 0) {
 232                 command = COMMAND_rconResponse;
 233                 *direction = DIR_S2C;
 234                 command_len = 12;
 235         }
 236         else if (strncmp(text, "rcon", 4) == 0) {
 237                 command = COMMAND_rcon;
 238                 *direction = DIR_C2S;
 239                 command_len = 4;
 240         }
 241         else if (strncmp(text, "getmotdResponse", 15) == 0) {
 242                 command = COMMAND_getmotdResponse;
 243                 *direction = DIR_M2C;
 244                 command_len = 15;
 245         }
 246         else if (strncmp(text, "getmotd", 7) == 0) {
 247                 command = COMMAND_getmotd;
 248                 *direction = DIR_C2M;
 249                 command_len = 7;
 250         }
 251         else if (strncmp(text, "getserversResponse", 18) == 0) {
 252                 int base;
 253                 command = COMMAND_getserversResponse;
 254                 *direction = DIR_M2C;
 255                 command_len = 18;
 256                 /* The data can contain 0's, and the text string is binary
 257                 anyway, so better replace the text string after the first
 258                 \ with "<DATA>". */
 259                 if (text_item) {
 260                         /* first correct the length until the end of the packet */
 261                         proto_item_set_len(text_item, tvb_length_remaining(tvb, offset));
 262                         /* then replace the text */
 263                         proto_item_set_text(text_item, "Text: getserversResponse<DATA>");
 264                 }
 265                 if (text_tree)
 266                         proto_tree_add_string(text_tree, hf_quake3_connectionless_command,
 267                                         tvb, offset, command_len,
 268                                         val_to_str(command, names_command, "Unknown"));
 269                 command_finished = TRUE;
 270
 271                 /* now we decode all the rest */
 272                 base = offset + 18;
 273                 /* '/', ip-address in network order, port in network order */
 274                 while (tvb_reported_length_remaining(tvb, base) >= 7) {
 275                         guint32         ip_addr;
 276                         guint16         udp_port;
 277                         proto_item      *server_item = NULL;
 278                         proto_tree      *server_tree = NULL;
 279
 280                         tvb_memcpy(tvb, (guint8 *)&ip_addr, base + 1, 4);
 281                         udp_port = tvb_get_ntohs(tvb, base + 5);
 282
 283                         /* It may be a good idea to create a conversation for
 284                                 every server in this list, as we'll see at
 285                                 least a getinfo request to each of them and they
 286                                 may run on totally unusual ports.  */
 287
 288                         if (text_tree) {
 289                                 server_item = proto_tree_add_text(text_tree,
 290                                         tvb, base, 7,
 291                                         "Server: %s:%u",
 292                                                 get_hostname(ip_addr),
 293                                                 udp_port);
 294                                 if (server_item)
 295                                         server_tree = proto_item_add_subtree(
 296                                                 server_item,
 297                                                 ett_quake3_server);
 298                         }
 299                         if (server_tree) {
 300                                 proto_tree_add_ipv4(server_tree, hf_quake3_server_addr,
 301                                         tvb, base + 1, 4, ip_addr);
 302                                 proto_tree_add_uint(server_tree, hf_quake3_server_port,
 303                                         tvb, base + 5, 2, udp_port);
 304                         }
 305
 306                         base += 7;
 307                 }
 308         }
 309         else if (strncmp(text, "getservers", 10) == 0) {
 310                 command = COMMAND_getservers;
 311                 *direction = DIR_C2M;
 312                 command_len = 10;
 313         }
 314         else if (strncmp(text, "getKeyAuthorize", 15) == 0) {
 315                 command = COMMAND_getKeyAuthorize;
 316                 *direction = DIR_C2M;
 317                 command_len = 15;
 318         }
 319         else if (strncmp(text, "getIpAuthorize", 14) == 0) {
 320                 command = COMMAND_getIpAuthorize;
 321                 *direction = DIR_C2M;
 322                 command_len = 14;
 323         }
 324         else if (strncmp(text, "ipAuthorize", 11) == 0) {
 325                 command = COMMAND_ipAuthorize;
 326                 *direction = DIR_M2C;
 327                 command_len = 11;
 328         }
 329         else {
 330                 *direction = DIR_UNKNOWN;
 331         }
 332
 333         if (text_tree && command_finished == FALSE) {
 334                 proto_tree_add_string(text_tree, hf_quake3_connectionless_command,
 335                                         tvb, offset, command_len,
 336                                         val_to_str(command, names_command, "Unknown"));
 337         }
 338
 339         offset += len + 1;
 340
 341 }
 342
 343
 344 static void
 345 dissect_quake3_client_commands(tvbuff_t *tvb, packet_info *pinfo,
 346         proto_tree *tree)
 347 {
 348         /* this shouldn't be too difficult */
 349         call_dissector(data_handle,tvb, pinfo, tree);
 350 }
 351
 352
 353 static void
 354 dissect_quake3_server_commands(tvbuff_t *tvb, packet_info *pinfo,
 355         proto_tree *tree)
 356 {
 357         /* It is totally forbidden to decode this any further,
 358         I wont do it. */
 359         call_dissector(data_handle,tvb, pinfo, tree);
 360 }
 361
 362
 363 static const value_string names_reliable[] = {
 364         { 0, "Non Reliable" },
 365         { 1, "Reliable" },
 366         { 0, NULL }
 367 };
 368
 369
 370 static void
 371 dissect_quake3_GamePacket(tvbuff_t *tvb, packet_info *pinfo,
 372         proto_tree *tree, int *direction)
 373 {
 374         proto_tree      *game_tree = NULL;
 375         proto_item      *game_item = NULL;
 376         guint32         seq1;
 377         guint32         seq2;
 378         int             rel1;
 379         int             rel2;
 380         int             offset;
 381         guint           rest_length;
 382
 383         *direction = (pinfo->destport == gbl_quake3_server_port) ?
 384                         DIR_C2S : DIR_S2C;
 385
 386         if (tree) {
 387                 game_item = proto_tree_add_text(tree, tvb,
 388                                 0, -1, "Game");
 389                 if (game_item)
 390                         game_tree = proto_item_add_subtree(
 391                                 game_item, ett_quake3_game);
 392         }
 393
 394         offset = 0;
 395
 396         seq1 = tvb_get_letohs(tvb, offset);
 397         rel1 = seq1 & 0x8000 ? 1 : 0;
 398         seq1 &= ~0x8000;
 399         if (game_tree) {
 400                 proto_item *seq1_item = proto_tree_add_text(game_tree,
 401                         tvb, offset, 2, "Current Sequence: %u (%s)",
 402                         seq1, val_to_str(rel1,names_reliable,"%u"));
 403                 if (seq1_item) {
 404                         proto_tree *seq1_tree = proto_item_add_subtree(
 405                                 seq1_item, ett_quake3_game_seq1);
 406                         proto_tree_add_uint(seq1_tree, hf_quake3_game_seq1,
 407                                         tvb, offset, 2, seq1);
 408                         proto_tree_add_boolean(seq1_tree, hf_quake3_game_rel1,
 409                                         tvb, offset+1, 1, rel1);
 410                 }
 411         }
 412         offset += 2;
 413
 414         seq2 = tvb_get_letohs(tvb, offset);
 415         rel2 = seq2 & 0x8000 ? 1 : 0;
 416         seq2 &= ~0x8000;
 417         if (game_tree) {
 418                 proto_item *seq2_item = proto_tree_add_text(game_tree,
 419                         tvb, offset, 2, "Acknowledge Sequence: %u (%s)",
 420                         seq2, val_to_str(rel2,names_reliable,"%u"));
 421                 if (seq2_item) {
 422                         proto_tree *seq2_tree = proto_item_add_subtree(
 423                                 seq2_item, ett_quake3_game_seq2);
 424                         proto_tree_add_uint(seq2_tree, hf_quake3_game_seq2,
 425                                         tvb, offset, 2, seq2);
 426                         proto_tree_add_boolean(seq2_tree, hf_quake3_game_rel2,
 427                                         tvb, offset+1, 1, rel2);
 428                 }
 429         }
 430         offset += 2;
 431
 432         if (*direction == DIR_C2S) {
 433                 /* client to server */
 434                 guint16 qport = tvb_get_letohs(tvb, offset);
 435                 if (game_tree) {
 436                         proto_tree_add_uint(game_tree, hf_quake3_game_qport,
 437                                 tvb, offset, 2, qport);
 438                 }
 439                 offset +=2;
 440         }
 441
 442         /* all the rest is pure game data */
 443         rest_length = tvb_reported_length(tvb) - offset;
 444         if (rest_length) {
 445                 tvbuff_t *next_tvb =
 446                 tvb_new_subset(tvb, offset, rest_length , rest_length);
 447
 448                 if (*direction == DIR_C2S) {
 449                         proto_item *c_item = NULL;
 450                         proto_tree *c_tree = NULL;
 451                         if (tree) {
 452                                 c_item = proto_tree_add_text(game_tree, next_tvb,
 453                                 0, -1, "Client Commands");
 454                                 if (c_item) {
 455                                         c_tree = proto_item_add_subtree(
 456                                                 c_item, ett_quake3_game_clc);
 457                                 }
 458                         }
 459                         dissect_quake3_client_commands(next_tvb, pinfo, c_tree);
 460                 }
 461                 else {
 462                         proto_item *c_item = NULL;
 463                         proto_tree *c_tree = NULL;
 464                         if (tree) {
 465                                 c_item = proto_tree_add_text(game_tree, next_tvb,
 466                                 0, -1, "Server Commands");
 467                                 if (c_item) {
 468                                         c_tree = proto_item_add_subtree(
 469                                         c_item, ett_quake3_game_svc);
 470                                 }
 471                         }
 472                         dissect_quake3_server_commands(next_tvb, pinfo, c_tree);
 473                 }
 474         }
 475 }
 476
 477
 478 static void
 479 dissect_quake3(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 480 {
 481         proto_tree      *quake3_tree = NULL;
 482         proto_item      *quake3_item = NULL;
 483         proto_item      *dir_item = NULL;
 484         int             direction;
 485
 486         direction = DIR_UNKNOWN;
 487
 488         if (check_col(pinfo->cinfo, COL_PROTOCOL))
 489                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "QUAKE3");
 490
 491         if (tree) {
 492                 quake3_item = proto_tree_add_item(tree, proto_quake3,
 493                                 tvb, 0, -1, FALSE);
 494                 if (quake3_item)
 495                         quake3_tree = proto_item_add_subtree(
 496                                 quake3_item, ett_quake3);
 497
 498                         if (quake3_tree) {
 499                                 dir_item = proto_tree_add_none_format(
 500                                         quake3_tree,
 501                                         hf_quake3_direction, tvb, 0, 0,
 502                                         "Direction: %s",
 503                                         val_to_str(direction,
 504                                                 names_direction, "%u"));
 505                         }
 506         }
 507
 508         if (tvb_get_ntohl(tvb, 0) == 0xffffffff) {
 509                 if (check_col(pinfo->cinfo, COL_INFO)) {
 510                         col_set_str(pinfo->cinfo, COL_INFO, "Connectionless ");
 511                 }
 512                 if (quake3_tree)
 513                         proto_tree_add_uint_format(quake3_tree,
 514                                 hf_quake3_connectionless,
 515                                 tvb, 0, 0, 1,
 516                                 "Type: Connectionless");
 517                 dissect_quake3_ConnectionlessPacket(
 518                         tvb, pinfo, quake3_tree, &direction);
 519         }
 520         else {
 521                 if (check_col(pinfo->cinfo, COL_INFO)) {
 522                         col_set_str(pinfo->cinfo, COL_INFO, "Game ");
 523                 }
 524                 if (quake3_tree)
 525                         proto_tree_add_uint_format(quake3_tree,
 526                                 hf_quake3_game,
 527                                 tvb, 0, 0, 1,
 528                                 "Type: Game");
 529                 dissect_quake3_GamePacket(
 530                         tvb, pinfo, quake3_tree, &direction);
 531         }
 532         if (direction != DIR_UNKNOWN && dir_item)
 533                 proto_item_set_text(dir_item,
 534                                         "Direction: %s",
 535                                         val_to_str(direction,
 536                                                 names_direction, "%u"));
 537
 538         if (check_col(pinfo->cinfo, COL_INFO))
 539                 col_append_str(pinfo->cinfo, COL_INFO, val_to_str(direction,
 540                         names_direction, "%u"));
 541 }
 542
 543
 544 void
 545 proto_reg_handoff_quake3(void)
 546 {
 547         static int initialized=FALSE;
 548         static dissector_handle_t quake3_handle;
 549         static int server_port;
 550         static int master_port;
 551         int i;
 552
 553         if (!initialized) {
 554                 quake3_handle = create_dissector_handle(dissect_quake3,
 555                                 proto_quake3);
 556                 initialized=TRUE;
 557         } else {
 558                 for (i=0;i<4;i++)
 559                         dissector_delete("udp.port", server_port+i, quake3_handle);
 560                 for (i=0;i<4;i++)
 561                         dissector_delete("udp.port", master_port+i, quake3_handle);
 562         }
 563
 564         /* set port for future deletes */
 565         server_port = gbl_quake3_server_port;
 566         master_port = gbl_quake3_master_port;
 567
 568         /* add dissectors */
 569         for (i=0;i<4;i++)
 570                 dissector_add("udp.port", gbl_quake3_server_port + i,
 571                         quake3_handle);
 572         for (i=0;i<4;i++)
 573                 dissector_add("udp.port", gbl_quake3_master_port + i,
 574                         quake3_handle);
 575         data_handle = find_dissector("data");
 576 }
 577
 578
 579 void
 580 proto_register_quake3(void)
 581 {
 582         static hf_register_info hf[] = {
 583                 { &hf_quake3_direction,
 584                         { "Direction", "quake3.direction",
 585                         FT_NONE, BASE_DEC, NULL, 0x0,
 586                         "Packet Direction", HFILL }},
 587                 { &hf_quake3_connectionless,
 588                         { "Connectionless", "quake3.connectionless",
 589                         FT_UINT32, BASE_DEC, NULL, 0x0,
 590                         "Connectionless", HFILL }},
 591                 { &hf_quake3_game,
 592                         { "Game", "quake3.game",
 593                         FT_UINT32, BASE_DEC, NULL, 0x0,
 594                         "Game", HFILL }},
 595                 { &hf_quake3_connectionless_marker,
 596                         { "Marker", "quake3.connectionless.marker",
 597                         FT_UINT32, BASE_HEX, NULL, 0x0,
 598                         "Marker", HFILL }},
 599                 { &hf_quake3_connectionless_text,
 600                         { "Text", "quake3.connectionless.text",
 601                         FT_STRING, BASE_DEC, NULL, 0x0,
 602                         "Text", HFILL }},
 603                 { &hf_quake3_connectionless_command,
 604                         { "Command", "quake3.connectionless.command",
 605                         FT_STRING, BASE_DEC, NULL, 0x0,
 606                         "Command", HFILL }},
 607                 { &hf_quake3_server_addr,
 608                         { "Server Address", "quake3.server.addr",
 609                         FT_IPv4, BASE_DEC, NULL, 0x0,
 610                         "Server IP Address", HFILL }},
 611                 { &hf_quake3_server_port,
 612                         { "Server Port", "quake3.server.port",
 613                         FT_UINT16, BASE_DEC, NULL, 0x0,
 614                         "Server UDP Port", HFILL }},
 615                 { &hf_quake3_game_seq1,
 616                         { "Sequence Number", "quake3.game.seq1",
 617                         FT_UINT32, BASE_DEC, NULL, 0x0,
 618                         "Sequence number of the current packet", HFILL }},
 619                 { &hf_quake3_game_rel1,
 620                         { "Reliable", "quake3.game.rel1",
 621                         FT_BOOLEAN, BASE_DEC, NULL, 0x0,
 622                         "Packet is reliable and may be retransmitted", HFILL }},
 623                 { &hf_quake3_game_seq2,
 624                         { "Sequence Number", "quake3.game.seq2",
 625                         FT_UINT32, BASE_DEC, NULL, 0x0,
 626                         "Sequence number of the last received packet", HFILL }},
 627                 { &hf_quake3_game_rel2,
 628                         { "Reliable", "quake3.game.rel2",
 629                         FT_BOOLEAN, BASE_DEC, NULL, 0x0,
 630                         "Packet was reliable and may be retransmitted", HFILL }},
 631                 { &hf_quake3_game_qport,
 632                         { "QPort", "quake3.game.qport",
 633                         FT_UINT32, BASE_DEC, NULL, 0x0,
 634                         "Quake III Arena Client Port", HFILL }}
 635         };
 636         static gint *ett[] = {
 637                 &ett_quake3,
 638                 &ett_quake3_connectionless,
 639                 &ett_quake3_connectionless_text,
 640                 &ett_quake3_server,
 641                 &ett_quake3_game,
 642                 &ett_quake3_game_seq1,
 643                 &ett_quake3_game_seq2,
 644                 &ett_quake3_game_clc,
 645                 &ett_quake3_game_svc
 646         };
 647         module_t *quake3_module;
 648
 649         proto_quake3 = proto_register_protocol("Quake III Arena Network Protocol",
 650                                                 "QUAKE3", "quake3");
 651         proto_register_field_array(proto_quake3, hf, array_length(hf));
 652         proto_register_subtree_array(ett, array_length(ett));
 653
 654         /* Register a configuration option for port */
 655         quake3_module = prefs_register_protocol(proto_quake3,
 656                 proto_reg_handoff_quake3);
 657         prefs_register_uint_preference(quake3_module, "udp.arena_port",
 658                                         "Quake III Arena Server UDP Base Port",
 659                                         "Set the UDP base port for the Quake III Arena Server",
 660                                         10, &gbl_quake3_server_port);
 661         prefs_register_uint_preference(quake3_module, "udp.master_port",
 662                                         "Quake III Arena Master Server UDP Base Port",
 663                                         "Set the UDP base port for the Quake III Arena Master Server",
 664                                         10, &gbl_quake3_master_port);
 665 }