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wireshark/epan/dissectors/packet-quake2.c

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/* packet-quake2.c
* Routines for Quake II packet dissection
*
* Uwe Girlich <uwe@planetquake.com>
* http://www.idsoftware.com/q1source/q1source.zip
* http://www.planetquake.com/demospecs/dm2
* http://www.dgs.monash.edu.au/~timf/bottim/
* http://www.opt-sci.Arizona.EDU/Pandora/default.asp
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-quakeworld.c
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/prefs.h>
void proto_register_quake2(void);
static int proto_quake2 = -1;
static int hf_quake2_s2c = -1;
static int hf_quake2_c2s = -1;
static int hf_quake2_connectionless = -1;
static int hf_quake2_game = -1;
static int hf_quake2_userinfo = -1;
static int hf_quake2_command = -1;
static int hf_quake2_connectionless_marker = -1;
static int hf_quake2_connectionless_text = -1;
static int hf_quake2_game_seq1 = -1;
static int hf_quake2_game_rel1 = -1;
static int hf_quake2_game_seq2 = -1;
static int hf_quake2_game_rel2 = -1;
static int hf_quake2_game_qport = -1;
static int hf_quake2_game_client_command = -1;
static int hf_quake2_game_server_command = -1;
static int hf_quake2_game_client_command_move = -1;
static int hf_quake2_game_client_command_move_chksum = -1;
static int hf_quake2_game_client_command_move_lframe = -1;
static int hf_quake2_game_client_command_move_bitfield_angles1 = -1;
static int hf_quake2_game_client_command_move_bitfield_angles2 = -1;
static int hf_quake2_game_client_command_move_bitfield_angles3 = -1;
static int hf_quake2_game_client_command_move_bitfield_movement_fwd = -1;
static int hf_quake2_game_client_command_move_bitfield_movement_side = -1;
static int hf_quake2_game_client_command_move_bitfield_movement_up = -1;
static int hf_quake2_game_client_command_move_bitfield_buttons = -1;
static int hf_quake2_game_client_command_move_bitfield_impulse = -1;
static int hf_quake2_game_client_command_move_msec = -1;
static int hf_quake2_game_client_command_move_lightlevel = -1;
static gint ett_quake2 = -1;
static gint ett_quake2_connectionless = -1;
static gint ett_quake2_game = -1;
static gint ett_quake2_game_seq1 = -1;
static gint ett_quake2_game_seq2 = -1;
static gint ett_quake2_game_clc = -1;
static gint ett_quake2_game_svc = -1;
static gint ett_quake2_game_clc_cmd = -1;
static gint ett_quake2_game_svc_cmd = -1;
static gint ett_quake2_game_clc_cmd_move_bitfield = -1;
static gint ett_quake2_game_clc_cmd_move_moves = -1;
#define PORT_MASTER 27910
static guint gbl_quake2ServerPort=PORT_MASTER;
static void
dissect_quake2_ConnectionlessPacket(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree, int direction _U_)
{
proto_tree *cl_tree;
int len;
int offset;
guint32 marker;
marker = tvb_get_ntohl(tvb, 0);
cl_tree = proto_tree_add_subtree(tree, tvb,
0, -1, ett_quake2_connectionless, NULL, "Connectionless");
proto_tree_add_uint(cl_tree, hf_quake2_connectionless_marker,
tvb, 0, 4, marker);
/* all the rest of the packet is just text */
offset = 4;
len = tvb_captured_length_remaining(tvb, offset);
proto_tree_add_item(cl_tree, hf_quake2_connectionless_text,
tvb, offset, len, ENC_ASCII|ENC_NA);
/*offset += len;*/
/* we should analyse the result 'text' a bit further */
/* for this we need the direction parameter */
}
static const value_string hf_quake2_game_client_command_move_vals[] = {
{ 0x00, "-" },
{ 0x01, "set" },
{ 0, NULL }
};
static int
dissect_quake2_client_commands_move(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree)
{
#define MOVES 3 /* 3 updates per command */
/* taken from qcommon.h */
#define CM_ANGLE1 (1<<0)
#define CM_ANGLE2 (1<<1)
#define CM_ANGLE3 (1<<2)
#define CM_FORWARD (1<<3)
#define CM_SIDE (1<<4)
#define CM_UP (1<<5)
#define CM_BUTTONS (1<<6)
#define CM_IMPULSE (1<<7)
/* qshared.h */
#define BUTTON_ATTACK 1
#define BUTTON_USE 2
#define BUTTON_ANY 128
guint32 lastframe;
int i, offset = 0;
enum { Q_OFFSET, Q_VALUE, Q_SIZE };
struct movement {
guint8 bits[Q_SIZE];
guint16 angles[3][Q_SIZE];
gint16 movement[3][Q_SIZE];
guint8 buttons[Q_SIZE];
guint8 lightlevel[Q_SIZE];
guint8 msec[Q_SIZE];
guint8 impulse[Q_SIZE];
} move[MOVES+1];
offset++;
lastframe = tvb_get_letohl(tvb, offset);
offset += 4;
for (i=0; i < MOVES; i++) {
move[i].bits[Q_VALUE] = tvb_get_guint8(tvb, offset);
move[i].bits[Q_OFFSET] = offset;
offset++;
if (move[i].bits[Q_VALUE] & CM_ANGLE1) {
move[i].angles[0][Q_VALUE] = tvb_get_letohs(tvb, offset);
move[i].angles[0][Q_OFFSET] = offset;
offset += 2;
}
if (move[i].bits[Q_VALUE] & CM_ANGLE2) {
move[i].angles[1][Q_VALUE] = tvb_get_letohs(tvb, offset);
move[i].angles[1][Q_OFFSET] = offset;
offset += 2;
}
if (move[i].bits[Q_VALUE] & CM_ANGLE3) {
move[i].angles[2][Q_VALUE] = tvb_get_letohs(tvb, offset);
move[i].angles[2][Q_OFFSET] = offset;
offset += 2;
}
if (move[i].bits[Q_VALUE] & CM_FORWARD) {
move[i].movement[0][Q_VALUE] = tvb_get_letohs(tvb, offset);
move[i].movement[0][Q_OFFSET] = offset;
offset += 2;
}
if (move[i].bits[Q_VALUE] & CM_SIDE) {
move[i].movement[1][Q_VALUE] = tvb_get_letohs(tvb, offset);
move[i].movement[1][Q_OFFSET] = offset;
offset += 2;
}
if (move[i].bits[Q_VALUE] & CM_UP) {
move[i].movement[2][Q_VALUE] = tvb_get_letohs(tvb, offset);
move[i].movement[2][Q_OFFSET] = offset;
offset += 2;
}
if (move[i].bits[Q_VALUE] & CM_BUTTONS) {
move[i].buttons[Q_VALUE] = tvb_get_guint8(tvb, offset);
move[i].buttons[Q_OFFSET] = offset;
offset++;
}
if (move[i].bits[Q_VALUE] & CM_IMPULSE) {
move[i].impulse[Q_VALUE] = tvb_get_guint8(tvb, offset);
move[i].impulse[Q_OFFSET] = offset;
offset++;
}
move[i].msec[Q_VALUE] = tvb_get_guint8(tvb, offset);
move[i].msec[Q_OFFSET] = offset;
offset++;
move[i].lightlevel[Q_VALUE] = tvb_get_guint8(tvb, offset);
move[i].lightlevel[Q_OFFSET] = offset;
offset++;
}
if (!tree)
return offset;
proto_tree_add_checksum(tree, tvb, 0, hf_quake2_game_client_command_move_chksum, -1, NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
proto_tree_add_uint(tree, hf_quake2_game_client_command_move_lframe, tvb,
1, 4, lastframe);
move[MOVES].bits[Q_OFFSET] = offset;
for (i=0; i < MOVES; i++) {
proto_item *movebits_item, *bit_item;
proto_item *sub_tree, *field_tree;
#define SHORT2ANGLE(x) ((float)x/65536.0*360.0)
sub_tree = proto_tree_add_subtree_format(tree,
tvb,
move[i].bits[Q_OFFSET],
move[i+1].bits[Q_OFFSET]-move[i].bits[Q_OFFSET],
ett_quake2_game_clc_cmd_move_moves, NULL, "Move %u", i+1);
movebits_item =
proto_tree_add_uint(sub_tree, hf_quake2_game_client_command_move,
tvb,
move[i].bits[Q_OFFSET],
1,
move[i].bits[Q_VALUE]);
proto_tree_add_uint(sub_tree,
hf_quake2_game_client_command_move_msec,
tvb, move[i].msec[Q_OFFSET], 1, move[i].msec[Q_VALUE]);
proto_tree_add_uint(sub_tree,
hf_quake2_game_client_command_move_lightlevel,
tvb, move[i].lightlevel[Q_OFFSET], 1, move[i].lightlevel[Q_VALUE]);
if (move[i].bits[Q_VALUE] == 0) {
proto_item_append_text(movebits_item, " (no moves)");
continue;
}
field_tree = proto_item_add_subtree(movebits_item,
ett_quake2_game_clc_cmd_move_bitfield);
if (move[i].bits[Q_VALUE] & CM_ANGLE1) {
bit_item = proto_tree_add_uint(field_tree,
hf_quake2_game_client_command_move_bitfield_angles1, tvb,
move[i].angles[0][Q_OFFSET], 2, move[i].bits[Q_VALUE]);
proto_item_append_text(bit_item, " (%d", move[i].angles[0][Q_VALUE]);
proto_item_append_text(bit_item, " = %.2f deg)",
SHORT2ANGLE(move[i].angles[0][Q_VALUE]));
}
if (move[i].bits[Q_VALUE] & CM_ANGLE2) {
bit_item = proto_tree_add_uint(field_tree,
hf_quake2_game_client_command_move_bitfield_angles2, tvb,
move[i].angles[1][Q_OFFSET], 2, move[i].bits[Q_VALUE]);
proto_item_append_text(bit_item, " (%d", move[i].angles[1][Q_VALUE]);
proto_item_append_text(bit_item, " = %.2f deg)",
SHORT2ANGLE(move[i].angles[1][Q_VALUE]));
}
if (move[i].bits[Q_VALUE] & CM_ANGLE3) {
bit_item = proto_tree_add_uint(field_tree,
hf_quake2_game_client_command_move_bitfield_angles3, tvb,
move[i].angles[2][Q_OFFSET], 2, move[i].bits[Q_VALUE]);
proto_item_append_text(bit_item, " (%d", move[i].angles[2][Q_VALUE]);
proto_item_append_text(bit_item, " = %.2f deg)",
SHORT2ANGLE(move[i].angles[2][Q_VALUE]));
}
if (move[i].bits[Q_VALUE] & CM_FORWARD) {
bit_item = proto_tree_add_uint(field_tree,
hf_quake2_game_client_command_move_bitfield_movement_fwd, tvb,
move[i].movement[0][Q_OFFSET], 2, move[i].bits[Q_VALUE]);
proto_item_append_text(bit_item, " (%hd)",
move[i].movement[0][Q_VALUE]);
}
if (move[i].bits[Q_VALUE] & CM_SIDE) {
bit_item = proto_tree_add_uint(field_tree,
hf_quake2_game_client_command_move_bitfield_movement_side, tvb,
move[i].movement[1][Q_OFFSET], 2, move[i].bits[Q_VALUE]);
proto_item_append_text(bit_item, " (%hd)",
move[i].movement[1][Q_VALUE]);
}
if (move[i].bits[Q_VALUE] & CM_UP) {
bit_item = proto_tree_add_uint(field_tree,
hf_quake2_game_client_command_move_bitfield_movement_up, tvb,
move[i].movement[2][Q_OFFSET], 2, move[i].bits[Q_VALUE]);
proto_item_append_text(bit_item, " (%hd)",
move[i].movement[2][Q_VALUE]);
}
if (move[i].bits[Q_VALUE] & CM_BUTTONS) {
bit_item = proto_tree_add_uint(field_tree,
hf_quake2_game_client_command_move_bitfield_buttons, tvb,
move[i].buttons[Q_OFFSET], 1, move[i].bits[Q_VALUE]);
proto_item_append_text(bit_item, " (%d)",
move[i].buttons[Q_VALUE]);
if (move[i].buttons[Q_VALUE] & BUTTON_ATTACK)
proto_item_append_text(bit_item, " (Attack)");
if (move[i].buttons[Q_VALUE] & BUTTON_USE)
proto_item_append_text(bit_item, " (Use)");
if (move[i].buttons[Q_VALUE] & BUTTON_ANY)
proto_item_append_text(bit_item, " (Any)");
}
if (move[i].bits[Q_VALUE] & CM_IMPULSE) {
bit_item = proto_tree_add_uint(field_tree,
hf_quake2_game_client_command_move_bitfield_impulse, tvb,
move[i].impulse[Q_OFFSET], 1, move[i].bits[Q_VALUE]);
proto_item_append_text(bit_item, " (%d)",
move[i].impulse[Q_VALUE]);
}
}
return offset;
}
static int
dissect_quake2_client_commands_uinfo(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree)
{
guint len;
len = tvb_strsize(tvb, 0);
proto_tree_add_item(tree, hf_quake2_userinfo, tvb, 0, len, ENC_NA|ENC_ASCII);
return len;
}
static int
dissect_quake2_client_commands_stringcmd(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree)
{
guint len;
len = tvb_strsize(tvb, 0);
proto_tree_add_item(tree, hf_quake2_command, tvb, 0, len, ENC_NA|ENC_ASCII);
return len;
}
static const value_string names_client_cmd[] = {
/* qcommon.h */
#define CLC_BAD 0
{ CLC_BAD, "clc_bad" },
#define CLC_NOP 1
{ CLC_NOP, "clc_nop" },
#define CLC_MOVE 2
{ CLC_MOVE, "clc_move" },
#define CLC_USERINFO 3
{ CLC_USERINFO, "clc_userinfo" },
#define CLC_STRINGCMD 4
{ CLC_STRINGCMD, "clc_stringcmd" },
{ 0, NULL }
};
static void
dissect_quake2_client_commands(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree)
{
proto_tree *clc_tree = NULL;
tvbuff_t *next_tvb = NULL;
guint8 client_cmd_type;
proto_item *cmd_type_item;
guint rest_length = 0;
int offset = 0;
do {
client_cmd_type = tvb_get_guint8(tvb, offset);
cmd_type_item = proto_tree_add_uint(tree,
hf_quake2_game_client_command, tvb, offset, 1,
client_cmd_type);
proto_item_append_text(cmd_type_item, " (%s)",
val_to_str(client_cmd_type, names_client_cmd, "%u"));
clc_tree = proto_item_add_subtree(cmd_type_item, ett_quake2_game_clc_cmd);
offset++;
rest_length = tvb_reported_length(tvb) - offset;
if (rest_length)
next_tvb = tvb_new_subset_remaining(tvb, offset);
else
return;
rest_length = 0;
switch (client_cmd_type) {
case CLC_BAD:
break;
case CLC_NOP:
break;
case CLC_MOVE:
rest_length =
dissect_quake2_client_commands_move(next_tvb,
pinfo, clc_tree);
break;
case CLC_USERINFO:
rest_length =
dissect_quake2_client_commands_uinfo(next_tvb,
pinfo, clc_tree);
break;
case CLC_STRINGCMD:
rest_length =
dissect_quake2_client_commands_stringcmd(next_tvb,
pinfo, clc_tree);
break;
default:
break;
}
offset += rest_length;
} while (tvb_reported_length(tvb) - offset > 0);
}
static const value_string names_server_cmd[] = {
/* qcommon.h */
#define SVC_BAD 0
{ SVC_BAD, "svc_bad" },
#define SVC_MUZZLEFLASH 1
{ SVC_MUZZLEFLASH, "svc_muzzleflash" },
#define SVC_MUZZLEFLASH2 2
{ SVC_MUZZLEFLASH2, "svc_muzzleflash2" },
#define SVC_TEMP_ENTITY 3
{ SVC_TEMP_ENTITY, "svc_temp_entity" },
#define SVC_LAYOUT 4
{ SVC_LAYOUT, "svc_layout" },
#define SVC_INVENTORY 5
{ SVC_INVENTORY, "svc_inventory" },
#define SVC_NOP 6
{ SVC_NOP, "svc_nop" },
#define SVC_DISCONNECT 7
{ SVC_DISCONNECT, "svc_disconnect" },
#define SVC_RECONNECT 8
{ SVC_RECONNECT, "svc_reconnect" },
#define SVC_SOUND 9
{ SVC_SOUND, "svc_sound" },
#define SVC_PRINT 10
{ SVC_PRINT, "svc_print" },
#define SVC_STUFFTEXT 11
{ SVC_STUFFTEXT, "svc_stufftext" },
#define SVC_SERVERDATA 12
{ SVC_SERVERDATA, "svc_serverdata" },
#define SVC_CONFIGSTRING 13
{ SVC_CONFIGSTRING, "svc_configstring" },
#define SVC_SPAWNBASELINE 14
{ SVC_SPAWNBASELINE, "svc_spawnbaseline" },
#define SVC_CENTERPRINT 15
{ SVC_CENTERPRINT, "svc_centerprint" },
#define SVC_DOWNLOAD 16
{ SVC_DOWNLOAD, "svc_download" },
#define SVC_PLAYERINFO 17
{ SVC_PLAYERINFO, "svc_playerinfo" },
#define SVC_PACKETENTITIES 18
{ SVC_PACKETENTITIES, "svc_packetentities" },
#define SVC_DELTAPACKETENTITIES 19
{ SVC_DELTAPACKETENTITIES, "svc_deltapacketentities" },
#define SVC_FRAME 20
{ SVC_FRAME, "svc_frame" },
{ 0, NULL }
};
static void
dissect_quake2_server_commands(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree)
{
tvbuff_t *next_tvb = NULL;
guint8 server_cmd_type;
proto_item *cmd_type_item;
guint rest_length = 0;
int offset = 0;
server_cmd_type = tvb_get_guint8(tvb, offset);
cmd_type_item = proto_tree_add_uint(tree,
hf_quake2_game_server_command, tvb, offset, 1, server_cmd_type);
proto_item_append_text(cmd_type_item, " (%s)",
val_to_str(server_cmd_type, names_server_cmd, "%u"));
offset++;
rest_length = tvb_reported_length(tvb) - offset;
if (rest_length)
next_tvb = tvb_new_subset_remaining(tvb, offset);
else
return;
switch (server_cmd_type) {
case SVC_BAD:
break;
case SVC_MUZZLEFLASH:
break;
case SVC_MUZZLEFLASH2:
break;
case SVC_TEMP_ENTITY:
break;
case SVC_LAYOUT:
break;
case SVC_NOP:
break;
case SVC_DISCONNECT:
break;
case SVC_RECONNECT:
break;
case SVC_SOUND:
break;
case SVC_PRINT:
break;
case SVC_STUFFTEXT:
break;
case SVC_SERVERDATA:
break;
case SVC_CONFIGSTRING:
break;
case SVC_SPAWNBASELINE:
break;
case SVC_CENTERPRINT:
break;
case SVC_DOWNLOAD:
break;
case SVC_PLAYERINFO:
break;
case SVC_PACKETENTITIES:
break;
case SVC_DELTAPACKETENTITIES:
break;
case SVC_FRAME:
break;
default:
break;
}
call_data_dissector(next_tvb, pinfo, tree);
}
static const value_string names_reliable[] = {
{ 0, "Non Reliable" },
{ 1, "Reliable" },
{ 0, NULL }
};
static const value_string names_direction[] = {
#define DIR_C2S 0
{ DIR_C2S, "Client to Server" },
#define DIR_S2C 1
{ DIR_S2C, "Server to Client" },
{ 0, NULL }
};
static void
dissect_quake2_GamePacket(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree, int direction)
{
proto_tree *game_tree;
guint32 seq1;
guint32 seq2;
int rel1;
int rel2;
int offset;
guint rest_length;
direction = (pinfo->destport == gbl_quake2ServerPort) ?
DIR_C2S : DIR_S2C;
game_tree = proto_tree_add_subtree(tree, tvb,
0, -1, ett_quake2_game, NULL, "Game");
offset = 0;
seq1 = tvb_get_letohl(tvb, offset);
rel1 = seq1 & 0x80000000 ? 1 : 0;
seq1 &= ~0x80000000;
if (game_tree) {
proto_tree *seq1_tree = proto_tree_add_subtree_format(game_tree,
tvb, offset, 4, ett_quake2_game_seq1, NULL, "Current Sequence: %u (%s)",
seq1, val_to_str(rel1,names_reliable,"%u"));
proto_tree_add_uint(seq1_tree, hf_quake2_game_seq1,
tvb, offset, 4, seq1);
proto_tree_add_boolean(seq1_tree, hf_quake2_game_rel1,
tvb, offset+3, 1, rel1);
}
offset += 4;
seq2 = tvb_get_letohl(tvb, offset);
rel2 = seq2 & 0x80000000 ? 1 : 0;
seq2 &= ~0x80000000;
if (game_tree) {
proto_tree *seq2_tree = proto_tree_add_subtree_format(game_tree,
tvb, offset, 4, ett_quake2_game_seq2, NULL, "Acknowledge Sequence: %u (%s)",
seq2, val_to_str(rel2,names_reliable,"%u"));
proto_tree_add_uint(seq2_tree, hf_quake2_game_seq2,
tvb, offset, 4, seq2);
proto_tree_add_boolean(seq2_tree, hf_quake2_game_rel2,
tvb, offset+3, 1, rel2);
}
offset += 4;
if (direction == DIR_C2S) {
/* client to server */
guint16 qport = tvb_get_letohs(tvb, offset);
if (game_tree) {
proto_tree_add_uint(game_tree, hf_quake2_game_qport,
tvb, offset, 2, qport);
}
offset +=2;
}
/* all the rest is pure game data */
rest_length = tvb_reported_length(tvb) - offset;
if (rest_length) {
tvbuff_t *next_tvb =
tvb_new_subset_remaining(tvb, offset);
proto_tree *c_tree;
if (direction == DIR_C2S) {
c_tree = proto_tree_add_subtree(game_tree, next_tvb,
0, -1, ett_quake2_game_clc, NULL, "Client Commands");
dissect_quake2_client_commands(next_tvb, pinfo, c_tree);
}
else {
c_tree = proto_tree_add_subtree(game_tree, next_tvb,
0, -1, ett_quake2_game_svc, NULL, "Server Commands");
dissect_quake2_server_commands(next_tvb, pinfo, c_tree);
}
}
}
static int
dissect_quake2(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *quake2_tree = NULL;
int direction;
direction = (pinfo->destport == gbl_quake2ServerPort) ?
DIR_C2S : DIR_S2C;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "QUAKE2");
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(direction,
names_direction, "%u"));
if (tree) {
proto_item *quake2_item;
quake2_item = proto_tree_add_item(tree, proto_quake2,
tvb, 0, -1, ENC_NA);
quake2_tree = proto_item_add_subtree(quake2_item, ett_quake2);
proto_tree_add_uint_format(quake2_tree,
direction == DIR_S2C ?
hf_quake2_s2c :
hf_quake2_c2s,
tvb, 0, 0, 1,
"Direction: %s", val_to_str(direction, names_direction, "%u"));
}
if (tvb_get_ntohl(tvb, 0) == 0xffffffff) {
col_append_str(pinfo->cinfo, COL_INFO, " Connectionless");
proto_tree_add_uint_format(quake2_tree,
hf_quake2_connectionless,
tvb, 0, 0, 1,
"Type: Connectionless");
dissect_quake2_ConnectionlessPacket(
tvb, pinfo, quake2_tree, direction);
}
else {
col_append_str(pinfo->cinfo, COL_INFO, " Game");
proto_tree_add_uint_format(quake2_tree,
hf_quake2_game,
tvb, 0, 0, 1,
"Type: Game");
dissect_quake2_GamePacket(
tvb, pinfo, quake2_tree, direction);
}
return tvb_captured_length(tvb);
}
void proto_reg_handoff_quake2(void);
void
proto_register_quake2(void)
{
static hf_register_info hf[] = {
{ &hf_quake2_c2s,
{ "Client to Server", "quake2.c2s",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake2_s2c,
{ "Server to Client", "quake2.s2c",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake2_connectionless,
{ "Connectionless", "quake2.connectionless",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake2_game,
{ "Game", "quake2.game",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake2_userinfo,
{ "Userinfo", "quake2.userinfo",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake2_command,
{ "Command", "quake2.command",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake2_connectionless_marker,
{ "Marker", "quake2.connectionless.marker",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake2_connectionless_text,
{ "Text", "quake2.connectionless.text",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake2_game_seq1,
{ "Sequence Number", "quake2.game.seq1",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Sequence number of the current packet", HFILL }},
{ &hf_quake2_game_rel1,
{ "Reliable", "quake2.game.rel1",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Packet is reliable and may be retransmitted", HFILL }},
{ &hf_quake2_game_seq2,
{ "Sequence Number", "quake2.game.seq2",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Sequence number of the last received packet", HFILL }},
{ &hf_quake2_game_rel2,
{ "Reliable", "quake2.game.rel2",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Packet was reliable and may be retransmitted", HFILL }},
{ &hf_quake2_game_qport,
{ "QPort", "quake2.game.qport",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Quake II Client Port", HFILL }},
{ &hf_quake2_game_client_command,
{ "Client Command Type", "quake2.game.client.command",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Quake II Client Command", HFILL }},
{ &hf_quake2_game_server_command,
{ "Server Command", "quake2.game.server.command",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Quake II Server Command", HFILL }},
{ &hf_quake2_game_client_command_move_chksum,
{ "Checksum", "quake2.game.client.command.move.chksum",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Quake II Client Command Move", HFILL }},
{ &hf_quake2_game_client_command_move_lframe,
{ "Last Frame", "quake2.game.client.command.move.lframe",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Quake II Client Command Move", HFILL }},
{ &hf_quake2_game_client_command_move,
{ "Bitfield", "quake2.game.client.command.move",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Quake II Client Command Move", HFILL }},
{ &hf_quake2_game_client_command_move_bitfield_angles1,
{ "Angles (pitch)", "quake2.game.client.command.move.angles",
FT_UINT8, BASE_HEX,
VALS(hf_quake2_game_client_command_move_vals),
CM_ANGLE1, NULL, HFILL }},
{ &hf_quake2_game_client_command_move_bitfield_angles2,
{ "Angles (yaw)", "quake2.game.client.command.move.angles",
FT_UINT8, BASE_HEX,
VALS(hf_quake2_game_client_command_move_vals),
CM_ANGLE2, NULL, HFILL }},
{ &hf_quake2_game_client_command_move_bitfield_angles3,
{ "Angles (roll)", "quake2.game.client.command.move.angles",
FT_UINT8, BASE_HEX,
VALS(hf_quake2_game_client_command_move_vals),
CM_ANGLE3, NULL, HFILL }},
{ &hf_quake2_game_client_command_move_bitfield_movement_fwd,
{ "Movement (fwd)", "quake2.game.client.command.move.movement",
FT_UINT8, BASE_HEX,
VALS(hf_quake2_game_client_command_move_vals),
CM_FORWARD, NULL, HFILL }},
{ &hf_quake2_game_client_command_move_bitfield_movement_side,
{ "Movement (side)", "quake2.game.client.command.move.movement",
FT_UINT8, BASE_HEX,
VALS(hf_quake2_game_client_command_move_vals),
CM_SIDE, NULL, HFILL }},
{ &hf_quake2_game_client_command_move_bitfield_movement_up,
{ "Movement (up)", "quake2.game.client.command.move.movement",
FT_UINT8, BASE_HEX,
VALS(hf_quake2_game_client_command_move_vals),
CM_UP, NULL, HFILL }},
{ &hf_quake2_game_client_command_move_bitfield_buttons,
{ "Buttons", "quake2.game.client.command.move.buttons",
FT_UINT8, BASE_HEX,
VALS(hf_quake2_game_client_command_move_vals),
CM_BUTTONS, NULL, HFILL }},
{ &hf_quake2_game_client_command_move_bitfield_impulse,
{ "Impulse", "quake2.game.client.command.move.impulse",
FT_UINT8, BASE_HEX,
VALS(hf_quake2_game_client_command_move_vals),
CM_IMPULSE, NULL, HFILL }},
{ &hf_quake2_game_client_command_move_msec,
{ "Msec", "quake2.game.client.command.move.msec",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Quake II Client Command Move", HFILL }},
{ &hf_quake2_game_client_command_move_lightlevel,
{ "Lightlevel", "quake2.game.client.command.move.lightlevel",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Quake II Client Command Move", HFILL }}
};
static gint *ett[] = {
&ett_quake2,
&ett_quake2_connectionless,
&ett_quake2_game,
&ett_quake2_game_seq1,
&ett_quake2_game_seq2,
&ett_quake2_game_clc,
&ett_quake2_game_svc,
&ett_quake2_game_clc_cmd,
&ett_quake2_game_svc_cmd,
&ett_quake2_game_clc_cmd_move_moves,
&ett_quake2_game_clc_cmd_move_bitfield
};
module_t *quake2_module;
proto_quake2 = proto_register_protocol("Quake II Network Protocol",
"QUAKE2", "quake2");
proto_register_field_array(proto_quake2, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
/* Register a configuration option for port */
quake2_module = prefs_register_protocol(proto_quake2,
proto_reg_handoff_quake2);
prefs_register_uint_preference(quake2_module, "udp.port",
"Quake II Server UDP Port",
"Set the UDP port for the Quake II Server",
10, &gbl_quake2ServerPort);
}
void
proto_reg_handoff_quake2(void)
{
static gboolean Initialized=FALSE;
static dissector_handle_t quake2_handle;
static guint ServerPort;
if (!Initialized) {
quake2_handle = create_dissector_handle(dissect_quake2,
proto_quake2);
Initialized=TRUE;
} else {
dissector_delete_uint("udp.port", ServerPort, quake2_handle);
}
/* set port for future deletes */
ServerPort=gbl_quake2ServerPort;
dissector_add_uint("udp.port", gbl_quake2ServerPort, quake2_handle);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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