![Guy Harris](/assets/img/avatar_default.png)
statements. Move the setting of the Protocol column in various dissectors before anything is fetched from the packet, and also clear the Info column at that point in those and some other dissectors, so that if an exception is thrown, the columns don't reflect the previous protocol. Don't use col_add_fstr(..., "%s", string); Use col_add_str(..., string); as it does the same thing, but doesn't drag all the heavy *printf machinery in. Fix the DDTP dissector to set the Info column regardless of whether we're building a protocol tree or not, and to set it to "Encrypted payload" if the payload is encrypted. Also fix a typo in a field name. Register the FTP data dissector as being associated with the FTP data protocol, not the FTP protocol (the removed "CHECK_DISPLAY_AS_DATA()" call checked "proto_ftp_data", and the removed "pinfo->current_proto =" line set it to "FTP-DATA", so it should be associated with "proto_ftp_data"). Make the H1 dissector check whether the frame has at least 2 bytes in it before checking the first two bytes; heuristic dissectors must not throw exceptions until they've accepted the packet as one of theirs. Use "tvb_format_text()" rather than "tvb_get_ptr()" and "format_text()" in some dissectors where the result of "tvb_get_ptr()" is used only in the "format_text()" call. In the Quake dissector, don't check whether there are at least 4 bytes in the packet - if we return, the packet won't be dissected at all (it's not as if some other dissector will get to handle it), and, if we don't return, we'll throw an exception if there aren't at least 4 bytes in the packet, so the packet will be marked as short or malformed, as appropriate. In the RIPng dissector, associate the table of strings for the command field with the command field, so that the dissector doesn't have to format the string for the protocol tree entry itself, and so that the filter construction dialog box can let you select "Request" or "Response" from a list rather than requiring you to know the values for "Request" and "Response". Make "dissect_rpc()" static, as it's called only through a heuristic dissector list. Use "col_set_str()" to set the COL_PROTOCOL column for RPC protocols; the string used is from a table provided by the dissector, and is a string constant. Don't format the Info column for WSP into a buffer and then format that buffer into the column with "%s" - "col_add_fstr()" can do the formatting for you, without having to allocate your own buffer (or run through the *printf machinery twice). Don't fetch fields from the WTP packet until you're ready to use them, so that you don't throw an exception before you even set the Protocol column or clear the Info column. Use "pinfo->destport", not "pi.destport", in the Zebra dissector when checking whether the packet is a request or reply, and do the check by comparing with "pinfo->match_port" rather than TCP_PORT_ZEBRA (so that if the dissector is ever registered on another port, it still correctly determines whether the packet is a request or reply - the Network Monitor HTTP dissector has port 80 wired into its brain, which is a bit irritating if you're trying to get it to dissect HTTP proxy traffic on port 3128 or proxy administration UI traffic on port 3132). svn path=/trunk/; revision=2931
719 lines
20 KiB
C
719 lines
20 KiB
C
/* packet-quake.c
|
|
* Routines for quake packet dissection
|
|
*
|
|
* Uwe Girlich <uwe@planetquake.com>
|
|
* http://www.idsoftware.com/q1source/q1source.zip
|
|
*
|
|
* $Id: packet-quake.c,v 1.13 2001/01/22 08:03:45 guy Exp $
|
|
*
|
|
* Ethereal - Network traffic analyzer
|
|
* By Gerald Combs <gerald@zing.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* Copied from packet-tftp.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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
# include <sys/types.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_NETINET_IN_H
|
|
# include <netinet/in.h>
|
|
#endif
|
|
|
|
#include <glib.h>
|
|
#include "packet.h"
|
|
#include "conversation.h"
|
|
|
|
static int proto_quake = -1;
|
|
static int hf_quake_header_flags = -1;
|
|
static int hf_quake_header_length = -1;
|
|
static int hf_quake_header_sequence = -1;
|
|
static int hf_quake_control_command = -1;
|
|
|
|
static int hf_quake_CCREQ_CONNECT_game = -1;
|
|
static int hf_quake_CCREQ_CONNECT_version = -1;
|
|
static int hf_quake_CCREQ_SERVER_INFO_game = -1;
|
|
static int hf_quake_CCREQ_SERVER_INFO_version = -1;
|
|
static int hf_quake_CCREQ_PLAYER_INFO_player = -1;
|
|
static int hf_quake_CCREQ_RULE_INFO_lastrule = -1;
|
|
|
|
static int hf_quake_CCREP_ACCEPT_port = -1;
|
|
static int hf_quake_CCREP_REJECT_reason = -1;
|
|
static int hf_quake_CCREP_SERVER_INFO_address = -1;
|
|
static int hf_quake_CCREP_SERVER_INFO_server = -1;
|
|
static int hf_quake_CCREP_SERVER_INFO_map = -1;
|
|
static int hf_quake_CCREP_SERVER_INFO_num_player = -1;
|
|
static int hf_quake_CCREP_SERVER_INFO_max_player = -1;
|
|
static int hf_quake_CCREP_PLAYER_INFO_name = -1;
|
|
static int hf_quake_CCREP_PLAYER_INFO_colors = -1;
|
|
static int hf_quake_CCREP_PLAYER_INFO_colors_shirt = -1;
|
|
static int hf_quake_CCREP_PLAYER_INFO_colors_pants = -1;
|
|
static int hf_quake_CCREP_PLAYER_INFO_frags = -1;
|
|
static int hf_quake_CCREP_PLAYER_INFO_connect_time = -1;
|
|
static int hf_quake_CCREP_PLAYER_INFO_address = -1;
|
|
static int hf_quake_CCREP_RULE_INFO_rule = -1;
|
|
static int hf_quake_CCREP_RULE_INFO_value = -1;
|
|
|
|
|
|
static gint ett_quake = -1;
|
|
static gint ett_quake_control = -1;
|
|
static gint ett_quake_control_colors = -1;
|
|
static gint ett_quake_flags = -1;
|
|
|
|
|
|
/* I took these names directly out of the Q1 source. */
|
|
#define NETFLAG_LENGTH_MASK 0x0000ffff
|
|
#define NET_HEADERSIZE 8
|
|
#define DEFAULTnet_hostport 26000
|
|
|
|
#define NETFLAG_LENGTH_MASK 0x0000ffff
|
|
#define NETFLAG_DATA 0x00010000
|
|
#define NETFLAG_ACK 0x00020000
|
|
#define NETFLAG_NAK 0x00040000
|
|
#define NETFLAG_EOM 0x00080000
|
|
#define NETFLAG_UNRELIABLE 0x00100000
|
|
#define NETFLAG_CTL 0x80000000
|
|
|
|
|
|
#define CCREQ_CONNECT 0x01
|
|
#define CCREQ_SERVER_INFO 0x02
|
|
#define CCREQ_PLAYER_INFO 0x03
|
|
#define CCREQ_RULE_INFO 0x04
|
|
|
|
#define CCREP_ACCEPT 0x81
|
|
#define CCREP_REJECT 0x82
|
|
#define CCREP_SERVER_INFO 0x83
|
|
#define CCREP_PLAYER_INFO 0x84
|
|
#define CCREP_RULE_INFO 0x85
|
|
|
|
static const value_string names_control_command[] = {
|
|
{ CCREQ_CONNECT, "connect" },
|
|
{ CCREQ_SERVER_INFO, "server_info" },
|
|
{ CCREQ_PLAYER_INFO, "player_info" },
|
|
{ CCREQ_RULE_INFO, "rule_info" },
|
|
{ CCREP_ACCEPT, "accept" },
|
|
{ CCREP_REJECT, "reject" },
|
|
{ CCREP_SERVER_INFO, "server_info" },
|
|
{ CCREP_PLAYER_INFO, "player_info" },
|
|
{ CCREP_RULE_INFO, "rule_info" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
#define CCREQ 0x00
|
|
#define CCREP 0x80
|
|
|
|
#define QUAKE_MAXSTRING 0x800
|
|
|
|
static const value_string names_control_direction[] = {
|
|
{ CCREQ, "Request" },
|
|
{ CCREP, "Reply" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
|
|
static const value_string names_colors[] = {
|
|
{ 0, "White" },
|
|
{ 1, "Brown" },
|
|
{ 2, "Lavender" },
|
|
{ 3, "Khaki" },
|
|
{ 4, "Red" },
|
|
{ 5, "Lt Brown" },
|
|
{ 6, "Peach" },
|
|
{ 7, "Lt Peach" },
|
|
{ 8, "Purple" },
|
|
{ 9, "Dk Purple" },
|
|
{ 10, "Tan" },
|
|
{ 11, "Green" },
|
|
{ 12, "Yellow" },
|
|
{ 13, "Blue" },
|
|
{ 14, "Blue" },
|
|
{ 15, "Blue" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
|
|
static void dissect_quake(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
|
|
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREQ_CONNECT
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
gint maxbufsize;
|
|
char game[QUAKE_MAXSTRING];
|
|
guint8 version;
|
|
gint len;
|
|
|
|
maxbufsize = MIN(sizeof(game), tvb_length(tvb));
|
|
len = tvb_get_nstringz0(tvb, 0, maxbufsize, game);
|
|
version = tvb_get_guint8(tvb, len + 1);
|
|
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREQ_CONNECT_game,
|
|
tvb, 0, len + 1, game);
|
|
proto_tree_add_uint(tree, hf_quake_CCREQ_CONNECT_version,
|
|
tvb, len + 1, 1, version);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREQ_SERVER_INFO
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
gint maxbufsize;
|
|
char game[QUAKE_MAXSTRING];
|
|
guint8 version;
|
|
gint len;
|
|
|
|
maxbufsize = MIN(sizeof(game), tvb_length(tvb));
|
|
len = tvb_get_nstringz0(tvb, 0, maxbufsize, game);
|
|
version = tvb_get_guint8(tvb, len + 1);
|
|
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREQ_SERVER_INFO_game,
|
|
tvb, 0, len + 1, game);
|
|
proto_tree_add_uint(tree, hf_quake_CCREQ_SERVER_INFO_version,
|
|
tvb, len + 1, 1, version);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREQ_PLAYER_INFO
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint8 player;
|
|
|
|
player = tvb_get_guint8(tvb, 0);
|
|
if (tree) {
|
|
proto_tree_add_uint(tree, hf_quake_CCREQ_PLAYER_INFO_player,
|
|
tvb, 0, 1, player);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREQ_RULE_INFO
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
char rule[QUAKE_MAXSTRING];
|
|
gint maxbufsize;
|
|
gint len;
|
|
|
|
maxbufsize = MIN(sizeof(rule), tvb_length(tvb));
|
|
len = tvb_get_nstringz0(tvb, 0, maxbufsize, rule);
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREQ_RULE_INFO_lastrule,
|
|
tvb, 0, len + 1, rule);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREP_ACCEPT
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint32 port;
|
|
conversation_t *c;
|
|
|
|
port = tvb_get_letohl(tvb, 0);
|
|
c = conversation_new( &pi.src, &pi.dst, PT_UDP, port, pi.destport,
|
|
NULL, 0);
|
|
if (c) {
|
|
conversation_set_dissector(c, dissect_quake);
|
|
}
|
|
if (tree) {
|
|
proto_tree_add_uint(tree, hf_quake_CCREP_ACCEPT_port,
|
|
tvb, 0, 4, port);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREP_REJECT
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
gint maxbufsize;
|
|
char reason[QUAKE_MAXSTRING];
|
|
gint len;
|
|
|
|
maxbufsize = MIN(sizeof(reason), tvb_length(tvb));
|
|
len = tvb_get_nstringz0(tvb, 0, maxbufsize, reason);
|
|
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREP_REJECT_reason,
|
|
tvb, 0, len + 1, reason);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREP_SERVER_INFO
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
gint offset;
|
|
gint len;
|
|
gint maxbufsize;
|
|
char address[QUAKE_MAXSTRING];
|
|
char server[QUAKE_MAXSTRING];
|
|
char map[QUAKE_MAXSTRING];
|
|
|
|
guint8 num_player;
|
|
guint8 max_player;
|
|
guint8 version;
|
|
|
|
offset = 0;
|
|
|
|
maxbufsize = MIN(sizeof(address), tvb_length_remaining(tvb, offset));
|
|
len = tvb_get_nstringz0(tvb, offset, maxbufsize, address);
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_address,
|
|
tvb, offset, len + 1, address);
|
|
}
|
|
offset += len + 1;
|
|
|
|
maxbufsize = MIN(sizeof(server), tvb_length_remaining(tvb, offset));
|
|
len = tvb_get_nstringz0(tvb, offset, maxbufsize, server);
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_server,
|
|
tvb, offset, len + 1, server);
|
|
}
|
|
offset += len + 1;
|
|
|
|
maxbufsize = MIN(sizeof(map), tvb_length_remaining(tvb, offset));
|
|
len = tvb_get_nstringz0(tvb, offset, maxbufsize, map);
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREP_SERVER_INFO_map,
|
|
tvb, offset, len + 1, map);
|
|
}
|
|
offset += len + 1;
|
|
|
|
num_player = tvb_get_guint8(tvb, offset + 0);
|
|
max_player = tvb_get_guint8(tvb, offset + 1);
|
|
version = tvb_get_guint8(tvb, offset + 2);
|
|
|
|
if (tree) {
|
|
proto_tree_add_uint(tree, hf_quake_CCREP_SERVER_INFO_num_player,
|
|
tvb, offset + 0, 1, num_player);
|
|
proto_tree_add_uint(tree, hf_quake_CCREP_SERVER_INFO_max_player,
|
|
tvb, offset + 1, 1, max_player);
|
|
proto_tree_add_uint(tree, hf_quake_CCREQ_SERVER_INFO_version,
|
|
tvb, offset + 2, 1, version);
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREP_PLAYER_INFO
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
gint offset;
|
|
guint8 player;
|
|
gint len;
|
|
gint maxbufsize;
|
|
char name[QUAKE_MAXSTRING];
|
|
guint32 colors;
|
|
guint32 color_shirt;
|
|
guint32 color_pants;
|
|
guint32 frags;
|
|
guint32 connect_time;
|
|
char address[QUAKE_MAXSTRING];
|
|
|
|
offset = 0;
|
|
|
|
player = tvb_get_guint8(tvb, offset);
|
|
if (tree) {
|
|
proto_tree_add_uint(tree, hf_quake_CCREQ_PLAYER_INFO_player,
|
|
tvb, offset, 1, player);
|
|
}
|
|
offset += 1;
|
|
|
|
maxbufsize = MIN(sizeof(name), tvb_length_remaining(tvb, offset));
|
|
len = tvb_get_nstringz0(tvb, offset, maxbufsize, name);
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREP_PLAYER_INFO_name,
|
|
tvb, offset, len + 1, name);
|
|
}
|
|
offset += len + 1;
|
|
|
|
colors = tvb_get_letohl(tvb, offset + 0);
|
|
color_shirt = (colors >> 4) & 0x0f;
|
|
color_pants = (colors ) & 0x0f;
|
|
frags = tvb_get_letohl(tvb, offset + 4);
|
|
connect_time = tvb_get_letohl(tvb, offset + 8);
|
|
if (tree) {
|
|
proto_item *colors_item;
|
|
proto_tree *colors_tree;
|
|
|
|
colors_item = proto_tree_add_uint(tree,
|
|
hf_quake_CCREP_PLAYER_INFO_colors,
|
|
tvb, offset + 0, 4, colors);
|
|
if (colors_item) {
|
|
colors_tree = proto_item_add_subtree(colors_item,
|
|
ett_quake_control_colors);
|
|
proto_tree_add_uint(colors_tree,
|
|
hf_quake_CCREP_PLAYER_INFO_colors_shirt,
|
|
tvb, offset + 0, 1, color_shirt);
|
|
proto_tree_add_uint(colors_tree,
|
|
hf_quake_CCREP_PLAYER_INFO_colors_pants,
|
|
tvb, offset + 0, 1, color_pants);
|
|
}
|
|
proto_tree_add_uint(tree, hf_quake_CCREP_PLAYER_INFO_frags,
|
|
tvb, offset + 4, 4, frags);
|
|
proto_tree_add_uint(tree, hf_quake_CCREP_PLAYER_INFO_connect_time,
|
|
tvb, offset + 8, 4, connect_time);
|
|
}
|
|
offset += 3*4;
|
|
|
|
maxbufsize = MIN(sizeof(address), tvb_length_remaining(tvb, offset));
|
|
len = tvb_get_nstringz0(tvb, offset, maxbufsize, address);
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREP_PLAYER_INFO_address,
|
|
tvb, offset, len + 1, address);
|
|
}
|
|
offset += len + 1;
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_CCREP_RULE_INFO
|
|
(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
char rule[QUAKE_MAXSTRING];
|
|
char value[QUAKE_MAXSTRING];
|
|
gint maxbufsize;
|
|
gint len;
|
|
gint offset;
|
|
|
|
if (tvb_length(tvb) == 0) return;
|
|
|
|
offset = 0;
|
|
|
|
maxbufsize = MIN(sizeof(rule), tvb_length_remaining(tvb, offset));
|
|
len = tvb_get_nstringz0(tvb, offset, maxbufsize, rule);
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREP_RULE_INFO_rule,
|
|
tvb, offset, len + 1, rule);
|
|
}
|
|
offset += len + 1;
|
|
|
|
maxbufsize = MIN(sizeof(value), tvb_length_remaining(tvb, offset));
|
|
len = tvb_get_nstringz0(tvb, offset, maxbufsize, value);
|
|
if (tree) {
|
|
proto_tree_add_string(tree, hf_quake_CCREP_RULE_INFO_value,
|
|
tvb, offset, len + 1, value);
|
|
}
|
|
offset += len + 1;
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
guint8 command;
|
|
int direction;
|
|
proto_item *control_item = NULL;
|
|
proto_tree *control_tree = NULL;
|
|
guint rest_length;
|
|
tvbuff_t *next_tvb;
|
|
|
|
command = tvb_get_guint8(tvb, 0);
|
|
direction = (command & 0x80) ? CCREP : CCREQ;
|
|
|
|
if (check_col(pinfo->fd, COL_INFO)) {
|
|
col_add_fstr(pinfo->fd, COL_INFO, "%s %s",
|
|
val_to_str(command,names_control_command, "%u"),
|
|
val_to_str(direction,names_control_direction,"%u"));
|
|
}
|
|
|
|
if (tree) {
|
|
control_item = proto_tree_add_text(tree, tvb,
|
|
0, tvb_length(tvb), "Control %s: %s",
|
|
val_to_str(direction, names_control_direction, "%u"),
|
|
val_to_str(command, names_control_command, "%u"));
|
|
if (control_item)
|
|
control_tree = proto_item_add_subtree(control_item,
|
|
ett_quake_control);
|
|
proto_tree_add_uint(control_tree, hf_quake_control_command,
|
|
tvb, 0, 1, command);
|
|
}
|
|
|
|
rest_length = tvb_reported_length(tvb) - 1;
|
|
next_tvb = tvb_new_subset(tvb, 1, rest_length , rest_length);
|
|
switch (command) {
|
|
case CCREQ_CONNECT:
|
|
dissect_quake_CCREQ_CONNECT
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
case CCREQ_SERVER_INFO:
|
|
dissect_quake_CCREQ_SERVER_INFO
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
case CCREQ_PLAYER_INFO:
|
|
dissect_quake_CCREQ_PLAYER_INFO
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
case CCREQ_RULE_INFO:
|
|
dissect_quake_CCREQ_RULE_INFO
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
case CCREP_ACCEPT:
|
|
dissect_quake_CCREP_ACCEPT
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
case CCREP_REJECT:
|
|
dissect_quake_CCREP_REJECT
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
case CCREP_SERVER_INFO:
|
|
dissect_quake_CCREP_SERVER_INFO
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
case CCREP_PLAYER_INFO:
|
|
dissect_quake_CCREP_PLAYER_INFO
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
case CCREP_RULE_INFO:
|
|
dissect_quake_CCREP_RULE_INFO
|
|
(next_tvb, pinfo, control_tree);
|
|
break;
|
|
default:
|
|
dissect_data(next_tvb, 0, pinfo, control_tree);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_quake(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_tree *quake_tree = NULL;
|
|
proto_item *quake_item = NULL;
|
|
guint32 length;
|
|
guint32 flags;
|
|
guint32 sequence = 0;
|
|
guint rest_length;
|
|
tvbuff_t *next_tvb;
|
|
|
|
if (check_col(pinfo->fd, COL_PROTOCOL))
|
|
col_set_str(pinfo->fd, COL_PROTOCOL, "QUAKE");
|
|
if (check_col(pinfo->fd, COL_INFO))
|
|
col_clear(pinfo->fd, COL_INFO);
|
|
|
|
length = tvb_get_ntohl(tvb, 0);
|
|
flags = length & (~NETFLAG_LENGTH_MASK);
|
|
length &= NETFLAG_LENGTH_MASK;
|
|
|
|
if (tree) {
|
|
quake_item = proto_tree_add_item(tree, proto_quake,
|
|
tvb, 0, tvb_length(tvb), FALSE);
|
|
if (quake_item)
|
|
quake_tree = proto_item_add_subtree(quake_item, ett_quake);
|
|
}
|
|
|
|
if (quake_tree) {
|
|
proto_item* flags_item = NULL;
|
|
proto_tree* flags_tree = NULL;
|
|
|
|
flags_item = proto_tree_add_uint(quake_tree, hf_quake_header_flags,
|
|
tvb, 0, 2, flags);
|
|
if (flags_item) {
|
|
flags_tree = proto_item_add_subtree(flags_item, ett_quake_flags);
|
|
}
|
|
|
|
if (flags_tree) {
|
|
proto_tree_add_text(flags_tree, tvb, 0, 2,
|
|
decode_boolean_bitfield(flags, NETFLAG_DATA, 32,
|
|
"Data","-"));
|
|
proto_tree_add_text(flags_tree, tvb, 0, 2,
|
|
decode_boolean_bitfield(flags, NETFLAG_ACK, 32,
|
|
"Acknowledgment","-"));
|
|
proto_tree_add_text(flags_tree, tvb, 0, 2,
|
|
decode_boolean_bitfield(flags, NETFLAG_NAK, 32,
|
|
"No Acknowledgment","-"));
|
|
proto_tree_add_text(flags_tree, tvb, 0, 2,
|
|
decode_boolean_bitfield(flags, NETFLAG_EOM, 32,
|
|
"End Of Message","-"));
|
|
proto_tree_add_text(flags_tree, tvb, 0, 2,
|
|
decode_boolean_bitfield(flags, NETFLAG_UNRELIABLE, 32,
|
|
"Unreliable","-"));
|
|
proto_tree_add_text(flags_tree, tvb, 0, 2,
|
|
decode_boolean_bitfield(flags, NETFLAG_CTL, 32,
|
|
"Control","-"));
|
|
}
|
|
proto_tree_add_uint(quake_tree, hf_quake_header_length,
|
|
tvb, 2, 2, length);
|
|
}
|
|
|
|
if (flags == NETFLAG_CTL) {
|
|
rest_length = tvb_reported_length(tvb) - 4;
|
|
next_tvb = tvb_new_subset(tvb, 4, rest_length , rest_length);
|
|
dissect_quake_control(next_tvb, pinfo, quake_tree);
|
|
return;
|
|
}
|
|
|
|
sequence = tvb_get_ntohl(tvb, 4);
|
|
if (check_col(pinfo->fd, COL_INFO)) {
|
|
col_add_fstr(pinfo->fd, COL_INFO, "seq 0x%x", sequence);
|
|
}
|
|
if (quake_tree) {
|
|
proto_tree_add_uint(quake_tree, hf_quake_header_sequence,
|
|
tvb, 4, 4, sequence);
|
|
}
|
|
|
|
rest_length = tvb_reported_length(tvb) - 8;
|
|
next_tvb = tvb_new_subset(tvb, 8, rest_length , rest_length);
|
|
dissect_data(next_tvb, 0, pinfo, quake_tree);
|
|
}
|
|
|
|
void
|
|
proto_register_quake(void)
|
|
{
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_quake_header_flags,
|
|
{ "Flags", "quake.header.flags",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"Flags" }},
|
|
{ &hf_quake_header_length,
|
|
{ "Length", "quake.header.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"full data length" }},
|
|
{ &hf_quake_header_sequence,
|
|
{ "Sequence", "quake.header.sequence",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"Sequence Number" }},
|
|
{ &hf_quake_control_command,
|
|
{ "Command", "quake.control.command",
|
|
FT_UINT8, BASE_HEX, VALS(names_control_command), 0x0,
|
|
"Control Command" }},
|
|
{ &hf_quake_CCREQ_CONNECT_game,
|
|
{ "Game", "quake.control.connect.game",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Game Name" }},
|
|
{ &hf_quake_CCREQ_CONNECT_version,
|
|
{ "Version", "quake.control.connect.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Game Protocol Version Number" }},
|
|
{ &hf_quake_CCREQ_SERVER_INFO_game,
|
|
{ "Game", "quake.control.server_info.game",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Game Name" }},
|
|
{ &hf_quake_CCREQ_SERVER_INFO_version,
|
|
{ "Version", "quake.control.server_info.version",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Game Protocol Version Number" }},
|
|
{ &hf_quake_CCREQ_PLAYER_INFO_player,
|
|
{ "Player", "quake.control.player_info.player",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Player" }},
|
|
{ &hf_quake_CCREQ_RULE_INFO_lastrule,
|
|
{ "Last Rule", "quake.control.rule_info.lastrule",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Last Rule Name" }},
|
|
{ &hf_quake_CCREP_ACCEPT_port,
|
|
{ "Port", "quake.control.accept.port",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Game Data Port" }},
|
|
{ &hf_quake_CCREP_REJECT_reason,
|
|
{ "Reason", "quake.control.reject.reason",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Reject Reason" }},
|
|
{ &hf_quake_CCREP_SERVER_INFO_address,
|
|
{ "Address", "quake.control.server_info.address",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Server Address" }},
|
|
{ &hf_quake_CCREP_SERVER_INFO_server,
|
|
{ "Server", "quake.control.server_info.server",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Server Name" }},
|
|
{ &hf_quake_CCREP_SERVER_INFO_map,
|
|
{ "Map", "quake.control.server_info.map",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Map Name" }},
|
|
{ &hf_quake_CCREP_SERVER_INFO_num_player,
|
|
{ "Number of Players", "quake.control.server_info.num_player",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Current Number of Players" }},
|
|
{ &hf_quake_CCREP_SERVER_INFO_max_player,
|
|
{ "Maximal Number of Players", "quake.control.server_info.max_player",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Maximal Number of Players" }},
|
|
{ &hf_quake_CCREP_PLAYER_INFO_name,
|
|
{ "Name", "quake.control.player_info.name",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Player Name" }},
|
|
{ &hf_quake_CCREP_PLAYER_INFO_colors,
|
|
{ "Colors", "quake.control.player_info.colors",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"Player Colors" }},
|
|
{ &hf_quake_CCREP_PLAYER_INFO_colors_shirt,
|
|
{ "Shirt", "quake.control.player_info.colors.shirt",
|
|
FT_UINT8, BASE_DEC, VALS(names_colors), 0x0,
|
|
"Shirt Color" }},
|
|
{ &hf_quake_CCREP_PLAYER_INFO_colors_pants,
|
|
{ "Pants", "quake.control.player_info.colors.pants",
|
|
FT_UINT8, BASE_DEC, VALS(names_colors), 0x0,
|
|
"Pants Color" }},
|
|
{ &hf_quake_CCREP_PLAYER_INFO_frags,
|
|
{ "Frags", "quake.control.player_info.frags",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Player Frags" }},
|
|
{ &hf_quake_CCREP_PLAYER_INFO_connect_time,
|
|
{ "Connect Time", "quake.control.player_info.connect_time",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Player Connect Time" }},
|
|
{ &hf_quake_CCREP_PLAYER_INFO_address,
|
|
{ "Address", "quake.control.player_info.address",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Player Address" }},
|
|
{ &hf_quake_CCREP_RULE_INFO_rule,
|
|
{ "Rule", "quake.control.rule_info.rule",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Rule Name" }},
|
|
{ &hf_quake_CCREP_RULE_INFO_value,
|
|
{ "Value", "quake.control.rule_info.value",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"Rule Value" }},
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_quake,
|
|
&ett_quake_control,
|
|
&ett_quake_control_colors,
|
|
&ett_quake_flags,
|
|
};
|
|
|
|
proto_quake = proto_register_protocol("Quake Network Protocol",
|
|
"QUAKE", "quake");
|
|
proto_register_field_array(proto_quake, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
|
|
void
|
|
proto_reg_handoff_quake(void)
|
|
{
|
|
dissector_add("udp.port", DEFAULTnet_hostport, dissect_quake, proto_quake);
|
|
}
|