packet-quake.c

   1 /* packet-quake.c
   2  * Routines for quake packet dissection
   3  *
   4  * Uwe Girlich <uwe@planetquake.com>
   5  *      http://www.idsoftware.com/q1source/q1source.zip
   6  *
   7  * $Id: packet-quake.c,v 1.11 2001/01/03 06:55:31 guy Exp $
   8  *
   9  * Ethereal - Network traffic analyzer
  10  * By Gerald Combs <gerald@zing.org>
  11  * Copyright 1998 Gerald Combs
  12  *
  13  * Copied from packet-tftp.c
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  28  */
  29
  30 #ifdef HAVE_CONFIG_H
  31 # include "config.h"
  32 #endif
  33
  34 #ifdef HAVE_SYS_TYPES_H
  35 # include <sys/types.h>
  36 #endif
  37
  38 #ifdef HAVE_NETINET_IN_H
  39 # include <netinet/in.h>
  40 #endif
  41
  42 #include <glib.h>
  43 #include "packet.h"
  44 #include "conversation.h"
  45
  46 static int proto_quake = -1;
  47 static int hf_quake_header_flags = -1;
  48 static int hf_quake_header_length = -1;
  49 static int hf_quake_header_sequence = -1;
  50 static int hf_quake_control_command = -1;
  51
  52 static int hf_quake_CCREQ_CONNECT_game = -1;
  53 static int hf_quake_CCREQ_CONNECT_version = -1;
  54 static int hf_quake_CCREQ_SERVER_INFO_game = -1;
  55 static int hf_quake_CCREQ_SERVER_INFO_version = -1;
  56 static int hf_quake_CCREQ_PLAYER_INFO_player = -1;
  57 static int hf_quake_CCREQ_RULE_INFO_lastrule = -1;
  58
  59 static int hf_quake_CCREP_ACCEPT_port = -1;
  60 static int hf_quake_CCREP_REJECT_reason = -1;
  61 static int hf_quake_CCREP_SERVER_INFO_address = -1;
  62 static int hf_quake_CCREP_SERVER_INFO_server = -1;
  63 static int hf_quake_CCREP_SERVER_INFO_map = -1;
  64 static int hf_quake_CCREP_SERVER_INFO_num_player = -1;
  65 static int hf_quake_CCREP_SERVER_INFO_max_player = -1;
  66 static int hf_quake_CCREP_PLAYER_INFO_name = -1;
  67 static int hf_quake_CCREP_PLAYER_INFO_colors = -1;
  68 static int hf_quake_CCREP_PLAYER_INFO_colors_shirt = -1;
  69 static int hf_quake_CCREP_PLAYER_INFO_colors_pants = -1;
  70 static int hf_quake_CCREP_PLAYER_INFO_frags = -1;
  71 static int hf_quake_CCREP_PLAYER_INFO_connect_time = -1;
  72 static int hf_quake_CCREP_PLAYER_INFO_address = -1;
  73 static int hf_quake_CCREP_RULE_INFO_rule = -1;
  74 static int hf_quake_CCREP_RULE_INFO_value = -1;
  75
  76
  77 static gint ett_quake = -1;
  78 static gint ett_quake_control = -1;
  79 static gint ett_quake_control_colors = -1;
  80 static gint ett_quake_flags = -1;
  81
  82
  83 /* I took these names directly out of the Q1 source. */
  84 #define NETFLAG_LENGTH_MASK 0x0000ffff
  85 #define NET_HEADERSIZE 8
  86 #define DEFAULTnet_hostport 26000
  87
  88 #define NETFLAG_LENGTH_MASK     0x0000ffff
  89 #define NETFLAG_DATA            0x00010000
  90 #define NETFLAG_ACK                     0x00020000
  91 #define NETFLAG_NAK                     0x00040000
  92 #define NETFLAG_EOM                     0x00080000
  93 #define NETFLAG_UNRELIABLE      0x00100000
  94 #define NETFLAG_CTL                     0x80000000
  95
  96
  97 #define CCREQ_CONNECT           0x01
  98 #define CCREQ_SERVER_INFO       0x02
  99 #define CCREQ_PLAYER_INFO       0x03
 100 #define CCREQ_RULE_INFO         0x04
 101
 102 #define CCREP_ACCEPT            0x81
 103 #define CCREP_REJECT            0x82
 104 #define CCREP_SERVER_INFO       0x83
 105 #define CCREP_PLAYER_INFO       0x84
 106 #define CCREP_RULE_INFO         0x85
 107
 108 static const value_string names_control_command[] = {
 109         {       CCREQ_CONNECT, "connect" },
 110         {       CCREQ_SERVER_INFO, "server_info" },
 111         {       CCREQ_PLAYER_INFO, "player_info" },
 112         {       CCREQ_RULE_INFO, "rule_info" },
 113         {       CCREP_ACCEPT, "accept" },
 114         {       CCREP_REJECT, "reject" },
 115         {       CCREP_SERVER_INFO, "server_info" },
 116         {       CCREP_PLAYER_INFO, "player_info" },
 117         {       CCREP_RULE_INFO, "rule_info" },
 118         { 0, NULL }
 119 };
 120
 121 #define CCREQ 0x00
 122 #define CCREP 0x80
 123
 124 #define QUAKE_MAXSTRING 0x800
 125
 126 static const value_string names_control_direction[] = {
 127         { CCREQ, "Request" },
 128         { CCREP, "Reply" },
 129         { 0, NULL }
 130 };
 131
 132
 133 static const value_string names_colors[] = {
 134         {  0, "White" },
 135         {  1, "Brown" },
 136         {  2, "Lavender" },
 137         {  3, "Khaki" },
 138         {  4, "Red" },
 139         {  5, "Lt Brown" },
 140         {  6, "Peach" },
 141         {  7, "Lt Peach" },
 142         {  8, "Purple" },
 143         {  9, "Dk Purple" },
 144         { 10, "Tan" },
 145         { 11, "Green" },
 146         { 12, "Yellow" },
 147         { 13, "Blue" },
 148         { 14, "Blue" },
 149         { 15, "Blue" },
 150         {  0, NULL }
 151 };
 152
 153
 154 static void dissect_quake(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
 155
 156
 157
 158 static void
 159 dissect_quake_CCREQ_CONNECT
 160 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 161 {
 162         gint maxbufsize;
 163         char game[QUAKE_MAXSTRING];
 164         guint8 version;
 165         gint len;
 166
 167         maxbufsize = MIN(sizeof(game), tvb_length(tvb));
 168         len = tvb_get_nstringz0(tvb, 0, maxbufsize, game);
 169         version = tvb_get_guint8(tvb, len + 1);
 170
 171         if (tree) {
 172                 proto_tree_add_string(tree, hf_quake_CCREQ_CONNECT_game,
 173                         tvb, 0, len + 1, game);
 174                 proto_tree_add_uint(tree, hf_quake_CCREQ_CONNECT_version,
 175                         tvb, len + 1, 1, version);
 176         }
 177 }
 178
 179
 180 static void
 181 dissect_quake_CCREQ_SERVER_INFO
 182 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 183 {
 184         gint maxbufsize;
 185         char game[QUAKE_MAXSTRING];
 186         guint8 version;
 187         gint len;
 188
 189         maxbufsize = MIN(sizeof(game), tvb_length(tvb));
 190         len = tvb_get_nstringz0(tvb, 0, maxbufsize, game);
 191         version = tvb_get_guint8(tvb, len + 1);
 192
 193         if (tree) {
 194                 proto_tree_add_string(tree, hf_quake_CCREQ_SERVER_INFO_game,
 195                         tvb, 0, len + 1, game);
 196                 proto_tree_add_uint(tree, hf_quake_CCREQ_SERVER_INFO_version,
 197                         tvb, len + 1, 1, version);
 198         }
 199 }
 200
 201
 202 static void
 203 dissect_quake_CCREQ_PLAYER_INFO
 204 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 205 {
 206         guint8 player;
 207
 208         player = tvb_get_guint8(tvb, 0);
 209         if (tree) {
 210                  proto_tree_add_uint(tree, hf_quake_CCREQ_PLAYER_INFO_player,
 211                         tvb, 0, 1, player);
 212         }
 213 }
 214
 215
 216 static void
 217 dissect_quake_CCREQ_RULE_INFO
 218 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 219 {
 220         char rule[QUAKE_MAXSTRING];
 221         gint maxbufsize;
 222         gint len;
 223
 224         maxbufsize = MIN(sizeof(rule), tvb_length(tvb));
 225         len = tvb_get_nstringz0(tvb, 0, maxbufsize, rule);
 226         if (tree) {
 227                 proto_tree_add_string(tree, hf_quake_CCREQ_RULE_INFO_lastrule,
 228                         tvb, 0, len + 1, rule);
 229         }
 230 }
 231
 232
 233 static void
 234 dissect_quake_CCREP_ACCEPT
 235 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 236 {
 237         guint32 port;
 238         conversation_t *c;
 239
 240         port = tvb_get_letohl(tvb, 0);
 241         c = conversation_new( &pi.src, &pi.dst, PT_UDP, port, pi.destport,
 242             NULL, 0);
 243         if (c) {
 244                 conversation_set_dissector(c, dissect_quake);
 245         }
 246         if (tree) {
 247                 proto_tree_add_uint(tree, hf_quake_CCREP_ACCEPT_port,
 248                         tvb, 0, 4, port);
 249         }
 250 }
 251
 252
 253 static void
 254 dissect_quake_CCREP_REJECT
 255 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 256 {
 257         gint maxbufsize;
 258         char reason[QUAKE_MAXSTRING];
 259         gint len;
 260
 261         maxbufsize = MIN(sizeof(reason), tvb_length(tvb));
 262         len = tvb_get_nstringz0(tvb, 0, maxbufsize, reason);
 263
 264         if (tree) {
 265                 proto_tree_add_string(tree, hf_quake_CCREP_REJECT_reason,
 266                         tvb, 0, len + 1, reason);
 267         }
 268 }
 269
 270
 271 static void
 272 dissect_quake_CCREP_SERVER_INFO
 273 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 274 {
 275         gint offset;
 276         gint len;
 277         gint maxbufsize;
 278         char address[QUAKE_MAXSTRING];
 279         char server[QUAKE_MAXSTRING];
 280         char map[QUAKE_MAXSTRING];
 281
 282         guint8 num_player;
 283         guint8 max_player;
 284         guint8 version;
 285
 286         offset = 0;
 287
 288         maxbufsize = MIN(sizeof(address), tvb_length_remaining(tvb, offset));
 289         len = tvb_get_nstringz0(tvb, offset, maxbufsize, address);
 290         if (tree) {
 291                 proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_address,
 292                         tvb, offset, len + 1, address);
 293         }
 294         offset += len + 1;
 295
 296         maxbufsize = MIN(sizeof(server), tvb_length_remaining(tvb, offset));
 297         len = tvb_get_nstringz0(tvb, offset, maxbufsize, server);
 298         if (tree) {
 299                 proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_server,
 300                         tvb, offset, len + 1, server);
 301         }
 302         offset += len + 1;
 303
 304         maxbufsize = MIN(sizeof(map), tvb_length_remaining(tvb, offset));
 305         len = tvb_get_nstringz0(tvb, offset, maxbufsize, map);
 306         if (tree) {
 307                 proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_map,
 308                         tvb, offset, len + 1, map);
 309         }
 310         offset += len + 1;
 311
 312         num_player = tvb_get_guint8(tvb, offset + 0);
 313         max_player = tvb_get_guint8(tvb, offset + 1);
 314         version    = tvb_get_guint8(tvb, offset + 2);
 315
 316         if (tree) {
 317                 proto_tree_add_uint(tree, hf_quake_CCREP_SERVER_INFO_num_player,
 318                         tvb, offset + 0, 1, num_player);
 319                 proto_tree_add_uint(tree, hf_quake_CCREP_SERVER_INFO_max_player,
 320                         tvb, offset + 1, 1, max_player);
 321                 proto_tree_add_uint(tree, hf_quake_CCREQ_SERVER_INFO_version,
 322                         tvb, offset + 2, 1, version);
 323         }
 324 }
 325
 326
 327 static void
 328 dissect_quake_CCREP_PLAYER_INFO
 329 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 330 {
 331         gint offset;
 332         guint8 player;
 333         gint len;
 334         gint maxbufsize;
 335         char name[QUAKE_MAXSTRING];
 336         guint32 colors;
 337         guint32 color_shirt;
 338         guint32 color_pants;
 339         guint32 frags;
 340         guint32 connect_time;
 341         char address[QUAKE_MAXSTRING];
 342
 343         offset = 0;
 344
 345         player = tvb_get_guint8(tvb, offset);
 346         if (tree) {
 347                 proto_tree_add_uint(tree, hf_quake_CCREQ_PLAYER_INFO_player,
 348                         tvb, offset, 1, player);
 349         }
 350         offset += 1;
 351
 352         maxbufsize = MIN(sizeof(name), tvb_length_remaining(tvb, offset));
 353         len = tvb_get_nstringz0(tvb, offset, maxbufsize, name);
 354         if (tree) {
 355                 proto_tree_add_string(tree, hf_quake_CCREP_PLAYER_INFO_name,
 356                         tvb, offset, len + 1, name);
 357         }
 358         offset += len + 1;
 359
 360         colors       = tvb_get_letohl(tvb, offset + 0);
 361         color_shirt = (colors >> 4) & 0x0f;
 362         color_pants = (colors     ) & 0x0f;
 363         frags        = tvb_get_letohl(tvb, offset + 4);
 364         connect_time = tvb_get_letohl(tvb, offset + 8);
 365         if (tree) {
 366                 proto_item *colors_item;
 367                 proto_tree *colors_tree;
 368
 369                 colors_item = proto_tree_add_uint(tree,
 370                         hf_quake_CCREP_PLAYER_INFO_colors,
 371                         tvb, offset + 0, 4, colors);
 372                 if (colors_item) {
 373                         colors_tree = proto_item_add_subtree(colors_item,
 374                                         ett_quake_control_colors);
 375                         proto_tree_add_uint(colors_tree,
 376                                 hf_quake_CCREP_PLAYER_INFO_colors_shirt,
 377                                 tvb, offset + 0, 1, color_shirt);
 378                         proto_tree_add_uint(colors_tree,
 379                                 hf_quake_CCREP_PLAYER_INFO_colors_pants,
 380                                 tvb, offset + 0, 1, color_pants);
 381                 }
 382                 proto_tree_add_uint(tree, hf_quake_CCREP_PLAYER_INFO_frags,
 383                         tvb, offset + 4, 4, frags);
 384                 proto_tree_add_uint(tree, hf_quake_CCREP_PLAYER_INFO_connect_time,
 385                         tvb, offset + 8, 4, connect_time);
 386         }
 387         offset += 3*4;
 388
 389         maxbufsize = MIN(sizeof(address), tvb_length_remaining(tvb, offset));
 390         len = tvb_get_nstringz0(tvb, offset, maxbufsize, address);
 391         if (tree) {
 392                 proto_tree_add_string(tree, hf_quake_CCREP_PLAYER_INFO_address,
 393                         tvb, offset, len + 1, address);
 394         }
 395         offset += len + 1;
 396 }
 397
 398
 399 static void
 400 dissect_quake_CCREP_RULE_INFO
 401 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 402 {
 403         char rule[QUAKE_MAXSTRING];
 404         char value[QUAKE_MAXSTRING];
 405         gint maxbufsize;
 406         gint len;
 407         gint offset;
 408
 409         if (tvb_length(tvb) == 0) return;
 410
 411         offset = 0;
 412
 413         maxbufsize = MIN(sizeof(rule), tvb_length_remaining(tvb, offset));
 414         len = tvb_get_nstringz0(tvb, offset, maxbufsize, rule);
 415         if (tree) {
 416                 proto_tree_add_string(tree, hf_quake_CCREP_RULE_INFO_rule,
 417                         tvb, offset, len + 1, rule);
 418         }
 419         offset += len + 1;
 420
 421         maxbufsize = MIN(sizeof(value), tvb_length_remaining(tvb, offset));
 422         len = tvb_get_nstringz0(tvb, offset, maxbufsize, value);
 423         if (tree) {
 424                 proto_tree_add_string(tree, hf_quake_CCREP_RULE_INFO_value,
 425                         tvb, offset, len + 1, value);
 426         }
 427         offset += len + 1;
 428 }
 429
 430
 431 static void
 432 dissect_quake_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 433 {
 434         guint8          command;
 435         int             direction;
 436         proto_item      *control_item = NULL;
 437         proto_tree      *control_tree = NULL;
 438         guint           rest_length;
 439         tvbuff_t        *next_tvb;
 440
 441         command = tvb_get_guint8(tvb, 0);
 442         direction = (command & 0x80) ? CCREP : CCREQ;
 443
 444         if (check_col(pinfo->fd, COL_INFO)) {
 445                 col_add_fstr(pinfo->fd, COL_INFO, "%s %s",
 446                         val_to_str(command,names_control_command, "%u"),
 447                         val_to_str(direction,names_control_direction,"%u"));
 448         }
 449
 450         if (tree) {
 451                 control_item = proto_tree_add_text(tree, tvb,
 452                                 0, tvb_length(tvb), "Control %s: %s",
 453                                 val_to_str(direction, names_control_direction, "%u"),
 454                                 val_to_str(command, names_control_command, "%u"));
 455                 if (control_item)
 456                         control_tree = proto_item_add_subtree(control_item,
 457                                                 ett_quake_control);
 458                 proto_tree_add_uint(control_tree, hf_quake_control_command,
 459                                         tvb, 0, 1, command);
 460         }
 461
 462         rest_length = tvb_reported_length(tvb) - 1;
 463         next_tvb = tvb_new_subset(tvb, 1, rest_length , rest_length);
 464         switch (command) {
 465                 case CCREQ_CONNECT:
 466                         dissect_quake_CCREQ_CONNECT
 467                         (next_tvb, pinfo, control_tree);
 468                 break;
 469                 case CCREQ_SERVER_INFO:
 470                         dissect_quake_CCREQ_SERVER_INFO
 471                         (next_tvb, pinfo, control_tree);
 472                 break;
 473                 case CCREQ_PLAYER_INFO:
 474                         dissect_quake_CCREQ_PLAYER_INFO
 475                         (next_tvb, pinfo, control_tree);
 476                 break;
 477                 case CCREQ_RULE_INFO:
 478                         dissect_quake_CCREQ_RULE_INFO
 479                         (next_tvb, pinfo, control_tree);
 480                 break;
 481                 case CCREP_ACCEPT:
 482                         dissect_quake_CCREP_ACCEPT
 483                         (next_tvb, pinfo, control_tree);
 484                 break;
 485                 case CCREP_REJECT:
 486                         dissect_quake_CCREP_REJECT
 487                         (next_tvb, pinfo, control_tree);
 488                 break;
 489                 case CCREP_SERVER_INFO:
 490                         dissect_quake_CCREP_SERVER_INFO
 491                         (next_tvb, pinfo, control_tree);
 492                 break;
 493                 case CCREP_PLAYER_INFO:
 494                         dissect_quake_CCREP_PLAYER_INFO
 495                         (next_tvb, pinfo, control_tree);
 496                 break;
 497                 case CCREP_RULE_INFO:
 498                         dissect_quake_CCREP_RULE_INFO
 499                         (next_tvb, pinfo, control_tree);
 500                 break;
 501                 default:
 502                         dissect_data(next_tvb, 0, pinfo, control_tree);
 503                 break;
 504         }
 505 }
 506
 507
 508 static void
 509 dissect_quake(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 510 {
 511         proto_tree      *quake_tree = NULL;
 512         proto_item      *quake_item = NULL;
 513         guint32         length;
 514         guint32         flags;
 515         guint32         sequence = 0;
 516         guint           rest_length;
 517         tvbuff_t        *next_tvb;
 518
 519         CHECK_DISPLAY_AS_DATA(proto_quake, tvb, pinfo, tree);
 520
 521         pinfo->current_proto = "QUAKE";
 522
 523         if (!tvb_bytes_exist(tvb, 0, 4)) return;
 524
 525         length = tvb_get_ntohl(tvb, 0);
 526         flags = length & (~NETFLAG_LENGTH_MASK);
 527         length &= NETFLAG_LENGTH_MASK;
 528
 529         if (check_col(pinfo->fd, COL_PROTOCOL))
 530                 col_set_str(pinfo->fd, COL_PROTOCOL, "QUAKE");
 531
 532         if (tree) {
 533                 quake_item = proto_tree_add_item(tree, proto_quake,
 534                                 tvb, 0, tvb_length(tvb), FALSE);
 535                 if (quake_item)
 536                         quake_tree = proto_item_add_subtree(quake_item, ett_quake);
 537         }
 538
 539         if (quake_tree) {
 540                 proto_item* flags_item = NULL;
 541                 proto_tree* flags_tree = NULL;
 542
 543                 flags_item = proto_tree_add_uint(quake_tree, hf_quake_header_flags,
 544                         tvb, 0, 2, flags);
 545                 if (flags_item) {
 546                         flags_tree = proto_item_add_subtree(flags_item, ett_quake_flags);
 547                 }
 548
 549                 if (flags_tree) {
 550                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 551                                 decode_boolean_bitfield(flags, NETFLAG_DATA, 32,
 552                                 "Data","-"));
 553                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 554                                 decode_boolean_bitfield(flags, NETFLAG_ACK, 32,
 555                                 "Acknowledgment","-"));
 556                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 557                                 decode_boolean_bitfield(flags, NETFLAG_NAK, 32,
 558                                 "No Acknowledgment","-"));
 559                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 560                                 decode_boolean_bitfield(flags, NETFLAG_EOM, 32,
 561                                 "End Of Message","-"));
 562                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 563                                 decode_boolean_bitfield(flags, NETFLAG_UNRELIABLE, 32,
 564                                 "Unreliable","-"));
 565                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 566                                 decode_boolean_bitfield(flags, NETFLAG_CTL, 32,
 567                                 "Control","-"));
 568                 }
 569                 proto_tree_add_uint(quake_tree, hf_quake_header_length,
 570                         tvb, 2, 2, length);
 571         }
 572
 573         if (flags == NETFLAG_CTL) {
 574                 rest_length = tvb_reported_length(tvb) - 4;
 575                 next_tvb = tvb_new_subset(tvb, 4, rest_length , rest_length);
 576                 dissect_quake_control(next_tvb, pinfo, quake_tree);
 577                 return;
 578         }
 579
 580         sequence = tvb_get_ntohl(tvb, 4);
 581         if (check_col(pinfo->fd, COL_INFO)) {
 582                 col_add_fstr(pinfo->fd, COL_INFO, "seq 0x%x", sequence);
 583         }
 584         if (quake_tree) {
 585                 proto_tree_add_uint(quake_tree, hf_quake_header_sequence,
 586                         tvb, 4, 4, sequence);
 587         }
 588
 589         rest_length = tvb_reported_length(tvb) - 8;
 590         next_tvb = tvb_new_subset(tvb, 8, rest_length , rest_length);
 591         dissect_data(next_tvb, 0, pinfo, quake_tree);
 592 }
 593
 594 void
 595 proto_register_quake(void)
 596 {
 597
 598   static hf_register_info hf[] = {
 599     { &hf_quake_header_flags,
 600       { "Flags", "quake.header.flags",
 601         FT_UINT16, BASE_HEX, NULL, 0x0,
 602         "Flags" }},
 603     { &hf_quake_header_length,
 604       { "Length", "quake.header.length",
 605         FT_UINT16, BASE_DEC, NULL, 0x0,
 606         "full data length" }},
 607     { &hf_quake_header_sequence,
 608       { "Sequence", "quake.header.sequence",
 609         FT_UINT32, BASE_HEX, NULL, 0x0,
 610         "Sequence Number" }},
 611     { &hf_quake_control_command,
 612       { "Command", "quake.control.command",
 613         FT_UINT8, BASE_HEX, VALS(names_control_command), 0x0,
 614         "Control Command" }},
 615     { &hf_quake_CCREQ_CONNECT_game,
 616       { "Game", "quake.control.connect.game",
 617         FT_STRING, BASE_DEC, NULL, 0x0,
 618         "Game Name" }},
 619     { &hf_quake_CCREQ_CONNECT_version,
 620       { "Version", "quake.control.connect.version",
 621         FT_UINT8, BASE_DEC, NULL, 0x0,
 622         "Game Protocol Version Number" }},
 623     { &hf_quake_CCREQ_SERVER_INFO_game,
 624       { "Game", "quake.control.server_info.game",
 625         FT_STRING, BASE_DEC, NULL, 0x0,
 626         "Game Name" }},
 627     { &hf_quake_CCREQ_SERVER_INFO_version,
 628       { "Version", "quake.control.server_info.version",
 629         FT_UINT8, BASE_DEC, NULL, 0x0,
 630         "Game Protocol Version Number" }},
 631     { &hf_quake_CCREQ_PLAYER_INFO_player,
 632       { "Player", "quake.control.player_info.player",
 633         FT_UINT8, BASE_DEC, NULL, 0x0,
 634         "Player" }},
 635     { &hf_quake_CCREQ_RULE_INFO_lastrule,
 636       { "Last Rule", "quake.control.rule_info.lastrule",
 637         FT_STRING, BASE_DEC, NULL, 0x0,
 638         "Last Rule Name" }},
 639     { &hf_quake_CCREP_ACCEPT_port,
 640       { "Port", "quake.control.accept.port",
 641         FT_UINT32, BASE_DEC, NULL, 0x0,
 642         "Game Data Port" }},
 643     { &hf_quake_CCREP_REJECT_reason,
 644       { "Reason", "quake.control.reject.reason",
 645         FT_STRING, BASE_DEC, NULL, 0x0,
 646         "Reject Reason" }},
 647     { &hf_quake_CCREP_SERVER_INFO_address,
 648       { "Address", "quake.control.server_info.address",
 649         FT_STRING, BASE_DEC, NULL, 0x0,
 650         "Server Address" }},
 651     { &hf_quake_CCREP_SERVER_INFO_server,
 652       { "Server", "quake.control.server_info.server",
 653         FT_STRING, BASE_DEC, NULL, 0x0,
 654         "Server Name" }},
 655     { &hf_quake_CCREP_SERVER_INFO_map,
 656       { "Map", "quake.control.server_info.map",
 657         FT_STRING, BASE_DEC, NULL, 0x0,
 658         "Map Name" }},
 659     { &hf_quake_CCREP_SERVER_INFO_num_player,
 660       { "Number of Players", "quake.control.server_info.num_player",
 661         FT_UINT8, BASE_DEC, NULL, 0x0,
 662         "Current Number of Players" }},
 663     { &hf_quake_CCREP_SERVER_INFO_max_player,
 664       { "Maximal Number of Players", "quake.control.server_info.max_player",
 665         FT_UINT8, BASE_DEC, NULL, 0x0,
 666         "Maximal Number of Players" }},
 667     { &hf_quake_CCREP_PLAYER_INFO_name,
 668       { "Name", "quake.control.player_info.name",
 669         FT_STRING, BASE_DEC, NULL, 0x0,
 670         "Player Name" }},
 671     { &hf_quake_CCREP_PLAYER_INFO_colors,
 672       { "Colors", "quake.control.player_info.colors",
 673         FT_UINT32, BASE_HEX, NULL, 0x0,
 674         "Player Colors" }},
 675     { &hf_quake_CCREP_PLAYER_INFO_colors_shirt,
 676       { "Shirt", "quake.control.player_info.colors.shirt",
 677         FT_UINT8, BASE_DEC, VALS(names_colors), 0x0,
 678         "Shirt Color" }},
 679     { &hf_quake_CCREP_PLAYER_INFO_colors_pants,
 680       { "Pants", "quake.control.player_info.colors.pants",
 681         FT_UINT8, BASE_DEC, VALS(names_colors), 0x0,
 682         "Pants Color" }},
 683     { &hf_quake_CCREP_PLAYER_INFO_frags,
 684       { "Frags", "quake.control.player_info.frags",
 685         FT_UINT32, BASE_DEC, NULL, 0x0,
 686         "Player Frags" }},
 687     { &hf_quake_CCREP_PLAYER_INFO_connect_time,
 688       { "Connect Time", "quake.control.player_info.connect_time",
 689         FT_UINT32, BASE_DEC, NULL, 0x0,
 690         "Player Connect Time" }},
 691     { &hf_quake_CCREP_PLAYER_INFO_address,
 692       { "Address", "quake.control.player_info.address",
 693         FT_STRING, BASE_DEC, NULL, 0x0,
 694         "Player Address" }},
 695     { &hf_quake_CCREP_RULE_INFO_rule,
 696       { "Rule", "quake.control.rule_info.rule",
 697         FT_STRING, BASE_DEC, NULL, 0x0,
 698         "Rule Name" }},
 699     { &hf_quake_CCREP_RULE_INFO_value,
 700       { "Value", "quake.control.rule_info.value",
 701         FT_STRING, BASE_DEC, NULL, 0x0,
 702         "Rule Value" }},
 703   };
 704   static gint *ett[] = {
 705     &ett_quake,
 706     &ett_quake_control,
 707     &ett_quake_control_colors,
 708     &ett_quake_flags,
 709   };
 710
 711   proto_quake = proto_register_protocol("Quake Network Protocol",
 712                                         "QUAKE", "quake");
 713   proto_register_field_array(proto_quake, hf, array_length(hf));
 714   proto_register_subtree_array(ett, array_length(ett));
 715 }
 716
 717
 718 void
 719 proto_reg_handoff_quake(void)
 720 {
 721   dissector_add("udp.port", DEFAULTnet_hostport, dissect_quake);
 722 }