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 1.18 2001/09/03 10:33:06 guy Exp $
   8  *
   9  * Ethereal - Network traffic analyzer
  10  * By Gerald Combs <gerald@ethereal.com>
  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 #include "prefs.h"
  46
  47 static int proto_quake = -1;
  48 static int hf_quake_header_flags = -1;
  49 static int hf_quake_header_length = -1;
  50 static int hf_quake_header_sequence = -1;
  51 static int hf_quake_control_command = -1;
  52
  53 static int hf_quake_CCREQ_CONNECT_game = -1;
  54 static int hf_quake_CCREQ_CONNECT_version = -1;
  55 static int hf_quake_CCREQ_SERVER_INFO_game = -1;
  56 static int hf_quake_CCREQ_SERVER_INFO_version = -1;
  57 static int hf_quake_CCREQ_PLAYER_INFO_player = -1;
  58 static int hf_quake_CCREQ_RULE_INFO_lastrule = -1;
  59
  60 static int hf_quake_CCREP_ACCEPT_port = -1;
  61 static int hf_quake_CCREP_REJECT_reason = -1;
  62 static int hf_quake_CCREP_SERVER_INFO_address = -1;
  63 static int hf_quake_CCREP_SERVER_INFO_server = -1;
  64 static int hf_quake_CCREP_SERVER_INFO_map = -1;
  65 static int hf_quake_CCREP_SERVER_INFO_num_player = -1;
  66 static int hf_quake_CCREP_SERVER_INFO_max_player = -1;
  67 static int hf_quake_CCREP_PLAYER_INFO_name = -1;
  68 static int hf_quake_CCREP_PLAYER_INFO_colors = -1;
  69 static int hf_quake_CCREP_PLAYER_INFO_colors_shirt = -1;
  70 static int hf_quake_CCREP_PLAYER_INFO_colors_pants = -1;
  71 static int hf_quake_CCREP_PLAYER_INFO_frags = -1;
  72 static int hf_quake_CCREP_PLAYER_INFO_connect_time = -1;
  73 static int hf_quake_CCREP_PLAYER_INFO_address = -1;
  74 static int hf_quake_CCREP_RULE_INFO_rule = -1;
  75 static int hf_quake_CCREP_RULE_INFO_value = -1;
  76
  77
  78 static gint ett_quake = -1;
  79 static gint ett_quake_control = -1;
  80 static gint ett_quake_control_colors = -1;
  81 static gint ett_quake_flags = -1;
  82
  83
  84 /* I took these names directly out of the Q1 source. */
  85 #define NETFLAG_LENGTH_MASK 0x0000ffff
  86 #define NET_HEADERSIZE 8
  87 #define DEFAULTnet_hostport 26000
  88 static unsigned int gbl_quakeServerPort=DEFAULTnet_hostport;
  89
  90 #define NETFLAG_LENGTH_MASK     0x0000ffff
  91 #define NETFLAG_DATA            0x00010000
  92 #define NETFLAG_ACK                     0x00020000
  93 #define NETFLAG_NAK                     0x00040000
  94 #define NETFLAG_EOM                     0x00080000
  95 #define NETFLAG_UNRELIABLE      0x00100000
  96 #define NETFLAG_CTL                     0x80000000
  97
  98
  99 #define CCREQ_CONNECT           0x01
 100 #define CCREQ_SERVER_INFO       0x02
 101 #define CCREQ_PLAYER_INFO       0x03
 102 #define CCREQ_RULE_INFO         0x04
 103
 104 #define CCREP_ACCEPT            0x81
 105 #define CCREP_REJECT            0x82
 106 #define CCREP_SERVER_INFO       0x83
 107 #define CCREP_PLAYER_INFO       0x84
 108 #define CCREP_RULE_INFO         0x85
 109
 110 static const value_string names_control_command[] = {
 111         {       CCREQ_CONNECT, "connect" },
 112         {       CCREQ_SERVER_INFO, "server_info" },
 113         {       CCREQ_PLAYER_INFO, "player_info" },
 114         {       CCREQ_RULE_INFO, "rule_info" },
 115         {       CCREP_ACCEPT, "accept" },
 116         {       CCREP_REJECT, "reject" },
 117         {       CCREP_SERVER_INFO, "server_info" },
 118         {       CCREP_PLAYER_INFO, "player_info" },
 119         {       CCREP_RULE_INFO, "rule_info" },
 120         { 0, NULL }
 121 };
 122
 123 #define CCREQ 0x00
 124 #define CCREP 0x80
 125
 126 #define QUAKE_MAXSTRING 0x800
 127
 128 static const value_string names_control_direction[] = {
 129         { CCREQ, "Request" },
 130         { CCREP, "Reply" },
 131         { 0, NULL }
 132 };
 133
 134
 135 static const value_string names_colors[] = {
 136         {  0, "White" },
 137         {  1, "Brown" },
 138         {  2, "Lavender" },
 139         {  3, "Khaki" },
 140         {  4, "Red" },
 141         {  5, "Lt Brown" },
 142         {  6, "Peach" },
 143         {  7, "Lt Peach" },
 144         {  8, "Purple" },
 145         {  9, "Dk Purple" },
 146         { 10, "Tan" },
 147         { 11, "Green" },
 148         { 12, "Yellow" },
 149         { 13, "Blue" },
 150         { 14, "Blue" },
 151         { 15, "Blue" },
 152         {  0, NULL }
 153 };
 154
 155
 156 static void dissect_quake(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
 157
 158
 159
 160 static void
 161 dissect_quake_CCREQ_CONNECT
 162 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 163 {
 164         gint maxbufsize;
 165         char game[QUAKE_MAXSTRING];
 166         guint8 version;
 167         gint len;
 168
 169         maxbufsize = MIN(sizeof(game), tvb_length(tvb));
 170         len = tvb_get_nstringz0(tvb, 0, maxbufsize, game);
 171         version = tvb_get_guint8(tvb, len + 1);
 172
 173         if (tree) {
 174                 proto_tree_add_string(tree, hf_quake_CCREQ_CONNECT_game,
 175                         tvb, 0, len + 1, game);
 176                 proto_tree_add_uint(tree, hf_quake_CCREQ_CONNECT_version,
 177                         tvb, len + 1, 1, version);
 178         }
 179 }
 180
 181
 182 static void
 183 dissect_quake_CCREQ_SERVER_INFO
 184 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 185 {
 186         gint maxbufsize;
 187         char game[QUAKE_MAXSTRING];
 188         guint8 version;
 189         gint len;
 190
 191         maxbufsize = MIN(sizeof(game), tvb_length(tvb));
 192         len = tvb_get_nstringz0(tvb, 0, maxbufsize, game);
 193         version = tvb_get_guint8(tvb, len + 1);
 194
 195         if (tree) {
 196                 proto_tree_add_string(tree, hf_quake_CCREQ_SERVER_INFO_game,
 197                         tvb, 0, len + 1, game);
 198                 proto_tree_add_uint(tree, hf_quake_CCREQ_SERVER_INFO_version,
 199                         tvb, len + 1, 1, version);
 200         }
 201 }
 202
 203
 204 static void
 205 dissect_quake_CCREQ_PLAYER_INFO
 206 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 207 {
 208         guint8 player;
 209
 210         player = tvb_get_guint8(tvb, 0);
 211         if (tree) {
 212                  proto_tree_add_uint(tree, hf_quake_CCREQ_PLAYER_INFO_player,
 213                         tvb, 0, 1, player);
 214         }
 215 }
 216
 217
 218 static void
 219 dissect_quake_CCREQ_RULE_INFO
 220 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 221 {
 222         char rule[QUAKE_MAXSTRING];
 223         gint maxbufsize;
 224         gint len;
 225
 226         maxbufsize = MIN(sizeof(rule), tvb_length(tvb));
 227         len = tvb_get_nstringz0(tvb, 0, maxbufsize, rule);
 228         if (tree) {
 229                 proto_tree_add_string(tree, hf_quake_CCREQ_RULE_INFO_lastrule,
 230                         tvb, 0, len + 1, rule);
 231         }
 232 }
 233
 234
 235 static void
 236 dissect_quake_CCREP_ACCEPT
 237 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 238 {
 239         guint32 port;
 240         conversation_t *c;
 241
 242         port = tvb_get_letohl(tvb, 0);
 243         c = conversation_new( &pinfo->src, &pinfo->dst, PT_UDP, port,
 244             pinfo->destport, 0);
 245         if (c) {
 246                 conversation_set_dissector(c, dissect_quake);
 247         }
 248         if (tree) {
 249                 proto_tree_add_uint(tree, hf_quake_CCREP_ACCEPT_port,
 250                         tvb, 0, 4, port);
 251         }
 252 }
 253
 254
 255 static void
 256 dissect_quake_CCREP_REJECT
 257 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 258 {
 259         gint maxbufsize;
 260         char reason[QUAKE_MAXSTRING];
 261         gint len;
 262
 263         maxbufsize = MIN(sizeof(reason), tvb_length(tvb));
 264         len = tvb_get_nstringz0(tvb, 0, maxbufsize, reason);
 265
 266         if (tree) {
 267                 proto_tree_add_string(tree, hf_quake_CCREP_REJECT_reason,
 268                         tvb, 0, len + 1, reason);
 269         }
 270 }
 271
 272
 273 static void
 274 dissect_quake_CCREP_SERVER_INFO
 275 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 276 {
 277         gint offset;
 278         gint len;
 279         gint maxbufsize;
 280         char address[QUAKE_MAXSTRING];
 281         char server[QUAKE_MAXSTRING];
 282         char map[QUAKE_MAXSTRING];
 283
 284         guint8 num_player;
 285         guint8 max_player;
 286         guint8 version;
 287
 288         offset = 0;
 289
 290         maxbufsize = MIN((int)sizeof(address), tvb_length_remaining(tvb, offset));
 291         len = tvb_get_nstringz0(tvb, offset, maxbufsize, address);
 292         if (tree) {
 293                 proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_address,
 294                         tvb, offset, len + 1, address);
 295         }
 296         offset += len + 1;
 297
 298         maxbufsize = MIN((int)sizeof(server), tvb_length_remaining(tvb, offset));
 299         len = tvb_get_nstringz0(tvb, offset, maxbufsize, server);
 300         if (tree) {
 301                 proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_server,
 302                         tvb, offset, len + 1, server);
 303         }
 304         offset += len + 1;
 305
 306         maxbufsize = MIN((int)sizeof(map), tvb_length_remaining(tvb, offset));
 307         len = tvb_get_nstringz0(tvb, offset, maxbufsize, map);
 308         if (tree) {
 309                 proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_map,
 310                         tvb, offset, len + 1, map);
 311         }
 312         offset += len + 1;
 313
 314         num_player = tvb_get_guint8(tvb, offset + 0);
 315         max_player = tvb_get_guint8(tvb, offset + 1);
 316         version    = tvb_get_guint8(tvb, offset + 2);
 317
 318         if (tree) {
 319                 proto_tree_add_uint(tree, hf_quake_CCREP_SERVER_INFO_num_player,
 320                         tvb, offset + 0, 1, num_player);
 321                 proto_tree_add_uint(tree, hf_quake_CCREP_SERVER_INFO_max_player,
 322                         tvb, offset + 1, 1, max_player);
 323                 proto_tree_add_uint(tree, hf_quake_CCREQ_SERVER_INFO_version,
 324                         tvb, offset + 2, 1, version);
 325         }
 326 }
 327
 328
 329 static void
 330 dissect_quake_CCREP_PLAYER_INFO
 331 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 332 {
 333         gint offset;
 334         guint8 player;
 335         gint len;
 336         gint maxbufsize;
 337         char name[QUAKE_MAXSTRING];
 338         guint32 colors;
 339         guint32 color_shirt;
 340         guint32 color_pants;
 341         guint32 frags;
 342         guint32 connect_time;
 343         char address[QUAKE_MAXSTRING];
 344
 345         offset = 0;
 346
 347         player = tvb_get_guint8(tvb, offset);
 348         if (tree) {
 349                 proto_tree_add_uint(tree, hf_quake_CCREQ_PLAYER_INFO_player,
 350                         tvb, offset, 1, player);
 351         }
 352         offset += 1;
 353
 354         maxbufsize = MIN((int)sizeof(name), tvb_length_remaining(tvb, offset));
 355         len = tvb_get_nstringz0(tvb, offset, maxbufsize, name);
 356         if (tree) {
 357                 proto_tree_add_string(tree, hf_quake_CCREP_PLAYER_INFO_name,
 358                         tvb, offset, len + 1, name);
 359         }
 360         offset += len + 1;
 361
 362         colors       = tvb_get_letohl(tvb, offset + 0);
 363         color_shirt = (colors >> 4) & 0x0f;
 364         color_pants = (colors     ) & 0x0f;
 365         frags        = tvb_get_letohl(tvb, offset + 4);
 366         connect_time = tvb_get_letohl(tvb, offset + 8);
 367         if (tree) {
 368                 proto_item *colors_item;
 369                 proto_tree *colors_tree;
 370
 371                 colors_item = proto_tree_add_uint(tree,
 372                         hf_quake_CCREP_PLAYER_INFO_colors,
 373                         tvb, offset + 0, 4, colors);
 374                 if (colors_item) {
 375                         colors_tree = proto_item_add_subtree(colors_item,
 376                                         ett_quake_control_colors);
 377                         proto_tree_add_uint(colors_tree,
 378                                 hf_quake_CCREP_PLAYER_INFO_colors_shirt,
 379                                 tvb, offset + 0, 1, color_shirt);
 380                         proto_tree_add_uint(colors_tree,
 381                                 hf_quake_CCREP_PLAYER_INFO_colors_pants,
 382                                 tvb, offset + 0, 1, color_pants);
 383                 }
 384                 proto_tree_add_uint(tree, hf_quake_CCREP_PLAYER_INFO_frags,
 385                         tvb, offset + 4, 4, frags);
 386                 proto_tree_add_uint(tree, hf_quake_CCREP_PLAYER_INFO_connect_time,
 387                         tvb, offset + 8, 4, connect_time);
 388         }
 389         offset += 3*4;
 390
 391         maxbufsize = MIN((int)sizeof(address), tvb_length_remaining(tvb, offset));
 392         len = tvb_get_nstringz0(tvb, offset, maxbufsize, address);
 393         if (tree) {
 394                 proto_tree_add_string(tree, hf_quake_CCREP_PLAYER_INFO_address,
 395                         tvb, offset, len + 1, address);
 396         }
 397         offset += len + 1;
 398 }
 399
 400
 401 static void
 402 dissect_quake_CCREP_RULE_INFO
 403 (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 404 {
 405         char rule[QUAKE_MAXSTRING];
 406         char value[QUAKE_MAXSTRING];
 407         gint maxbufsize;
 408         gint len;
 409         gint offset;
 410
 411         if (tvb_length(tvb) == 0) return;
 412
 413         offset = 0;
 414
 415         maxbufsize = MIN((int)sizeof(rule), tvb_length_remaining(tvb, offset));
 416         len = tvb_get_nstringz0(tvb, offset, maxbufsize, rule);
 417         if (tree) {
 418                 proto_tree_add_string(tree, hf_quake_CCREP_RULE_INFO_rule,
 419                         tvb, offset, len + 1, rule);
 420         }
 421         offset += len + 1;
 422
 423         maxbufsize = MIN((int)sizeof(value), tvb_length_remaining(tvb, offset));
 424         len = tvb_get_nstringz0(tvb, offset, maxbufsize, value);
 425         if (tree) {
 426                 proto_tree_add_string(tree, hf_quake_CCREP_RULE_INFO_value,
 427                         tvb, offset, len + 1, value);
 428         }
 429         offset += len + 1;
 430 }
 431
 432
 433 static void
 434 dissect_quake_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 435 {
 436         guint8          command;
 437         int             direction;
 438         proto_item      *control_item = NULL;
 439         proto_tree      *control_tree = NULL;
 440         guint           rest_length;
 441         tvbuff_t        *next_tvb;
 442
 443         command = tvb_get_guint8(tvb, 0);
 444         direction = (command & 0x80) ? CCREP : CCREQ;
 445
 446         if (check_col(pinfo->fd, COL_INFO)) {
 447                 col_add_fstr(pinfo->fd, COL_INFO, "%s %s",
 448                         val_to_str(command,names_control_command, "%u"),
 449                         val_to_str(direction,names_control_direction,"%u"));
 450         }
 451
 452         if (tree) {
 453                 control_item = proto_tree_add_text(tree, tvb,
 454                                 0, tvb_length(tvb), "Control %s: %s",
 455                                 val_to_str(direction, names_control_direction, "%u"),
 456                                 val_to_str(command, names_control_command, "%u"));
 457                 if (control_item)
 458                         control_tree = proto_item_add_subtree(control_item,
 459                                                 ett_quake_control);
 460                 proto_tree_add_uint(control_tree, hf_quake_control_command,
 461                                         tvb, 0, 1, command);
 462         }
 463
 464         rest_length = tvb_reported_length(tvb) - 1;
 465         next_tvb = tvb_new_subset(tvb, 1, rest_length , rest_length);
 466         switch (command) {
 467                 case CCREQ_CONNECT:
 468                         dissect_quake_CCREQ_CONNECT
 469                         (next_tvb, pinfo, control_tree);
 470                 break;
 471                 case CCREQ_SERVER_INFO:
 472                         dissect_quake_CCREQ_SERVER_INFO
 473                         (next_tvb, pinfo, control_tree);
 474                 break;
 475                 case CCREQ_PLAYER_INFO:
 476                         dissect_quake_CCREQ_PLAYER_INFO
 477                         (next_tvb, pinfo, control_tree);
 478                 break;
 479                 case CCREQ_RULE_INFO:
 480                         dissect_quake_CCREQ_RULE_INFO
 481                         (next_tvb, pinfo, control_tree);
 482                 break;
 483                 case CCREP_ACCEPT:
 484                         dissect_quake_CCREP_ACCEPT
 485                         (next_tvb, pinfo, control_tree);
 486                 break;
 487                 case CCREP_REJECT:
 488                         dissect_quake_CCREP_REJECT
 489                         (next_tvb, pinfo, control_tree);
 490                 break;
 491                 case CCREP_SERVER_INFO:
 492                         dissect_quake_CCREP_SERVER_INFO
 493                         (next_tvb, pinfo, control_tree);
 494                 break;
 495                 case CCREP_PLAYER_INFO:
 496                         dissect_quake_CCREP_PLAYER_INFO
 497                         (next_tvb, pinfo, control_tree);
 498                 break;
 499                 case CCREP_RULE_INFO:
 500                         dissect_quake_CCREP_RULE_INFO
 501                         (next_tvb, pinfo, control_tree);
 502                 break;
 503                 default:
 504                         dissect_data(next_tvb, 0, pinfo, control_tree);
 505                 break;
 506         }
 507 }
 508
 509
 510 static void
 511 dissect_quake(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 512 {
 513         proto_tree      *quake_tree = NULL;
 514         proto_item      *quake_item = NULL;
 515         guint32         length;
 516         guint32         flags;
 517         guint32         sequence = 0;
 518         guint           rest_length;
 519         tvbuff_t        *next_tvb;
 520
 521         /*
 522          * XXX - this is a conversation dissector, and the code to
 523          * call a conversation dissector doesn't check for disabled
 524          * protocols or set "pinfo->current_proto".
 525          */
 526         CHECK_DISPLAY_AS_DATA(proto_quake, tvb, pinfo, tree);
 527
 528         pinfo->current_proto = "QUAKE";
 529
 530         if (check_col(pinfo->fd, COL_PROTOCOL))
 531                 col_set_str(pinfo->fd, COL_PROTOCOL, "QUAKE");
 532         if (check_col(pinfo->fd, COL_INFO))
 533                 col_clear(pinfo->fd, COL_INFO);
 534
 535         length = tvb_get_ntohl(tvb, 0);
 536         flags = length & (~NETFLAG_LENGTH_MASK);
 537         length &= NETFLAG_LENGTH_MASK;
 538
 539         if (tree) {
 540                 quake_item = proto_tree_add_item(tree, proto_quake,
 541                                 tvb, 0, tvb_length(tvb), FALSE);
 542                 if (quake_item)
 543                         quake_tree = proto_item_add_subtree(quake_item, ett_quake);
 544         }
 545
 546         if (quake_tree) {
 547                 proto_item* flags_item = NULL;
 548                 proto_tree* flags_tree = NULL;
 549
 550                 flags_item = proto_tree_add_uint(quake_tree, hf_quake_header_flags,
 551                         tvb, 0, 2, flags);
 552                 if (flags_item) {
 553                         flags_tree = proto_item_add_subtree(flags_item, ett_quake_flags);
 554                 }
 555
 556                 if (flags_tree) {
 557                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 558                                 decode_boolean_bitfield(flags, NETFLAG_DATA, 32,
 559                                 "Data","-"));
 560                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 561                                 decode_boolean_bitfield(flags, NETFLAG_ACK, 32,
 562                                 "Acknowledgment","-"));
 563                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 564                                 decode_boolean_bitfield(flags, NETFLAG_NAK, 32,
 565                                 "No Acknowledgment","-"));
 566                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 567                                 decode_boolean_bitfield(flags, NETFLAG_EOM, 32,
 568                                 "End Of Message","-"));
 569                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 570                                 decode_boolean_bitfield(flags, NETFLAG_UNRELIABLE, 32,
 571                                 "Unreliable","-"));
 572                         proto_tree_add_text(flags_tree, tvb, 0, 2,
 573                                 decode_boolean_bitfield(flags, NETFLAG_CTL, 32,
 574                                 "Control","-"));
 575                 }
 576                 proto_tree_add_uint(quake_tree, hf_quake_header_length,
 577                         tvb, 2, 2, length);
 578         }
 579
 580         if (flags == NETFLAG_CTL) {
 581                 rest_length = tvb_reported_length(tvb) - 4;
 582                 next_tvb = tvb_new_subset(tvb, 4, rest_length , rest_length);
 583                 dissect_quake_control(next_tvb, pinfo, quake_tree);
 584                 return;
 585         }
 586
 587         sequence = tvb_get_ntohl(tvb, 4);
 588         if (check_col(pinfo->fd, COL_INFO)) {
 589                 col_add_fstr(pinfo->fd, COL_INFO, "seq 0x%x", sequence);
 590         }
 591         if (quake_tree) {
 592                 proto_tree_add_uint(quake_tree, hf_quake_header_sequence,
 593                         tvb, 4, 4, sequence);
 594         }
 595
 596         rest_length = tvb_reported_length(tvb) - 8;
 597         next_tvb = tvb_new_subset(tvb, 8, rest_length , rest_length);
 598         dissect_data(next_tvb, 0, pinfo, quake_tree);
 599 }
 600
 601
 602 void
 603 proto_reg_handoff_quake(void)
 604 {
 605         static int Initialized=FALSE;
 606         static int ServerPort=0;
 607
 608         if (Initialized) {
 609                 dissector_delete("udp.port", ServerPort, dissect_quake);
 610         } else {
 611                 Initialized=TRUE;
 612         }
 613
 614         /* set port for future deletes */
 615         ServerPort=gbl_quakeServerPort;
 616
 617         dissector_add("udp.port", gbl_quakeServerPort,
 618                         dissect_quake, proto_quake);
 619 }
 620
 621
 622 void
 623 proto_register_quake(void)
 624 {
 625   static hf_register_info hf[] = {
 626     { &hf_quake_header_flags,
 627       { "Flags", "quake.header.flags",
 628         FT_UINT16, BASE_HEX, NULL, 0x0,
 629         "Flags", HFILL }},
 630     { &hf_quake_header_length,
 631       { "Length", "quake.header.length",
 632         FT_UINT16, BASE_DEC, NULL, 0x0,
 633         "full data length", HFILL }},
 634     { &hf_quake_header_sequence,
 635       { "Sequence", "quake.header.sequence",
 636         FT_UINT32, BASE_HEX, NULL, 0x0,
 637         "Sequence Number", HFILL }},
 638     { &hf_quake_control_command,
 639       { "Command", "quake.control.command",
 640         FT_UINT8, BASE_HEX, VALS(names_control_command), 0x0,
 641         "Control Command", HFILL }},
 642     { &hf_quake_CCREQ_CONNECT_game,
 643       { "Game", "quake.control.connect.game",
 644         FT_STRING, BASE_DEC, NULL, 0x0,
 645         "Game Name", HFILL }},
 646     { &hf_quake_CCREQ_CONNECT_version,
 647       { "Version", "quake.control.connect.version",
 648         FT_UINT8, BASE_DEC, NULL, 0x0,
 649         "Game Protocol Version Number", HFILL }},
 650     { &hf_quake_CCREQ_SERVER_INFO_game,
 651       { "Game", "quake.control.server_info.game",
 652         FT_STRING, BASE_DEC, NULL, 0x0,
 653         "Game Name", HFILL }},
 654     { &hf_quake_CCREQ_SERVER_INFO_version,
 655       { "Version", "quake.control.server_info.version",
 656         FT_UINT8, BASE_DEC, NULL, 0x0,
 657         "Game Protocol Version Number", HFILL }},
 658     { &hf_quake_CCREQ_PLAYER_INFO_player,
 659       { "Player", "quake.control.player_info.player",
 660         FT_UINT8, BASE_DEC, NULL, 0x0,
 661         "Player", HFILL }},
 662     { &hf_quake_CCREQ_RULE_INFO_lastrule,
 663       { "Last Rule", "quake.control.rule_info.lastrule",
 664         FT_STRING, BASE_DEC, NULL, 0x0,
 665         "Last Rule Name", HFILL }},
 666     { &hf_quake_CCREP_ACCEPT_port,
 667       { "Port", "quake.control.accept.port",
 668         FT_UINT32, BASE_DEC, NULL, 0x0,
 669         "Game Data Port", HFILL }},
 670     { &hf_quake_CCREP_REJECT_reason,
 671       { "Reason", "quake.control.reject.reason",
 672         FT_STRING, BASE_DEC, NULL, 0x0,
 673         "Reject Reason", HFILL }},
 674     { &hf_quake_CCREP_SERVER_INFO_address,
 675       { "Address", "quake.control.server_info.address",
 676         FT_STRING, BASE_DEC, NULL, 0x0,
 677         "Server Address", HFILL }},
 678     { &hf_quake_CCREP_SERVER_INFO_server,
 679       { "Server", "quake.control.server_info.server",
 680         FT_STRING, BASE_DEC, NULL, 0x0,
 681         "Server Name", HFILL }},
 682     { &hf_quake_CCREP_SERVER_INFO_map,
 683       { "Map", "quake.control.server_info.map",
 684         FT_STRING, BASE_DEC, NULL, 0x0,
 685         "Map Name", HFILL }},
 686     { &hf_quake_CCREP_SERVER_INFO_num_player,
 687       { "Number of Players", "quake.control.server_info.num_player",
 688         FT_UINT8, BASE_DEC, NULL, 0x0,
 689         "Current Number of Players", HFILL }},
 690     { &hf_quake_CCREP_SERVER_INFO_max_player,
 691       { "Maximal Number of Players", "quake.control.server_info.max_player",
 692         FT_UINT8, BASE_DEC, NULL, 0x0,
 693         "Maximal Number of Players", HFILL }},
 694     { &hf_quake_CCREP_PLAYER_INFO_name,
 695       { "Name", "quake.control.player_info.name",
 696         FT_STRING, BASE_DEC, NULL, 0x0,
 697         "Player Name", HFILL }},
 698     { &hf_quake_CCREP_PLAYER_INFO_colors,
 699       { "Colors", "quake.control.player_info.colors",
 700         FT_UINT32, BASE_HEX, NULL, 0x0,
 701         "Player Colors", HFILL }},
 702     { &hf_quake_CCREP_PLAYER_INFO_colors_shirt,
 703       { "Shirt", "quake.control.player_info.colors.shirt",
 704         FT_UINT8, BASE_DEC, VALS(names_colors), 0x0,
 705         "Shirt Color", HFILL }},
 706     { &hf_quake_CCREP_PLAYER_INFO_colors_pants,
 707       { "Pants", "quake.control.player_info.colors.pants",
 708         FT_UINT8, BASE_DEC, VALS(names_colors), 0x0,
 709         "Pants Color", HFILL }},
 710     { &hf_quake_CCREP_PLAYER_INFO_frags,
 711       { "Frags", "quake.control.player_info.frags",
 712         FT_UINT32, BASE_DEC, NULL, 0x0,
 713         "Player Frags", HFILL }},
 714     { &hf_quake_CCREP_PLAYER_INFO_connect_time,
 715       { "Connect Time", "quake.control.player_info.connect_time",
 716         FT_UINT32, BASE_DEC, NULL, 0x0,
 717         "Player Connect Time", HFILL }},
 718     { &hf_quake_CCREP_PLAYER_INFO_address,
 719       { "Address", "quake.control.player_info.address",
 720         FT_STRING, BASE_DEC, NULL, 0x0,
 721         "Player Address", HFILL }},
 722     { &hf_quake_CCREP_RULE_INFO_rule,
 723       { "Rule", "quake.control.rule_info.rule",
 724         FT_STRING, BASE_DEC, NULL, 0x0,
 725         "Rule Name", HFILL }},
 726     { &hf_quake_CCREP_RULE_INFO_value,
 727       { "Value", "quake.control.rule_info.value",
 728         FT_STRING, BASE_DEC, NULL, 0x0,
 729         "Rule Value", HFILL }},
 730   };
 731         static gint *ett[] = {
 732                 &ett_quake,
 733                 &ett_quake_control,
 734                 &ett_quake_control_colors,
 735                 &ett_quake_flags,
 736         };
 737         module_t *quake_module;
 738
 739         proto_quake = proto_register_protocol("Quake Network Protocol",
 740                                         "QUAKE", "quake");
 741         proto_register_field_array(proto_quake, hf, array_length(hf));
 742         proto_register_subtree_array(ett, array_length(ett));
 743
 744         /* Register a configuration option for port */
 745         quake_module = prefs_register_protocol(proto_quake,
 746                 proto_reg_handoff_quake);
 747         prefs_register_uint_preference(quake_module, "udp.port",
 748                                         "Quake Server UDP Port",
 749                                         "Set the UDP port for the Quake Server",
 750                                         10, &gbl_quakeServerPort);
 751 }
 752
 753