osmith
/
wireshark
forked from osmocom/wireshark
1
0
Fork 0
Code Pull Requests Releases Wiki Activity
wireshark/epan/dissectors/packet-quake.c

596 lines
17 KiB
C
Raw Blame History

/* packet-quake.c
* Routines for Quake packet dissection
*
* Uwe Girlich <uwe@planetquake.com>
* http://www.idsoftware.com/q1source/q1source.zip
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* Copied from packet-tftp.c
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/conversation.h>
void proto_register_quake(void);
static int proto_quake = -1;
static int hf_quake_header_flags = -1;
static int hf_quake_header_flags_data = -1;
static int hf_quake_header_flags_ack = -1;
static int hf_quake_header_flags_no_ack = -1;
static int hf_quake_header_flags_endmsg = -1;
static int hf_quake_header_flags_unreliable = -1;
static int hf_quake_header_flags_control = -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;
static dissector_handle_t quake_handle;
/* I took these names directly out of the Q1 source. */
#define NET_HEADERSIZE 8
#define DEFAULTnet_hostport 26000
#define NETFLAG_DATA 0x0001
#define NETFLAG_ACK 0x0002
#define NETFLAG_NAK 0x0004
#define NETFLAG_EOM 0x0008
#define NETFLAG_UNRELIABLE 0x0010
#define NETFLAG_CTL 0x8000
#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_CCREQ_CONNECT
(tvbuff_t *tvb, proto_tree *tree)
{
gint offset = 0;
gint item_len;
proto_tree_add_item_ret_length(tree, hf_quake_CCREQ_CONNECT_game,
tvb, offset, -1, ENC_ASCII|ENC_NA, &item_len);
offset += item_len;
proto_tree_add_item(tree, hf_quake_CCREQ_CONNECT_version,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
}
static void
dissect_quake_CCREQ_SERVER_INFO
(tvbuff_t *tvb, proto_tree *tree)
{
gint offset = 0;
gint item_len;
proto_tree_add_item_ret_length(tree, hf_quake_CCREQ_SERVER_INFO_game,
tvb, offset, -1, ENC_ASCII|ENC_NA, &item_len);
offset += item_len;
proto_tree_add_item(tree, hf_quake_CCREQ_SERVER_INFO_version,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
}
static void
dissect_quake_CCREQ_PLAYER_INFO
(tvbuff_t *tvb, proto_tree *tree)
{
proto_tree_add_item(tree, hf_quake_CCREQ_PLAYER_INFO_player,
tvb, 0, 1, ENC_LITTLE_ENDIAN);
}
static void
dissect_quake_CCREQ_RULE_INFO
(tvbuff_t *tvb, proto_tree *tree)
{
proto_tree_add_item(tree, hf_quake_CCREQ_RULE_INFO_lastrule,
tvb, 0, -1, ENC_ASCII);
}
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 = find_or_create_conversation(pinfo);
conversation_set_dissector(c, quake_handle);
proto_tree_add_uint(tree, hf_quake_CCREP_ACCEPT_port,
tvb, 0, 4, port);
}
static void
dissect_quake_CCREP_REJECT
(tvbuff_t *tvb, proto_tree *tree)
{
proto_tree_add_item(tree, hf_quake_CCREP_REJECT_reason,
tvb, 0, -1, ENC_ASCII);
}
static void
dissect_quake_CCREP_SERVER_INFO
(tvbuff_t *tvb, proto_tree *tree)
{
gint offset = 0;
gint item_len;
proto_tree_add_item_ret_length(tree,
hf_quake_CCREP_SERVER_INFO_address, tvb, offset, -1,
ENC_ASCII|ENC_NA, &item_len);
offset += item_len;
proto_tree_add_item_ret_length(tree,
hf_quake_CCREP_SERVER_INFO_server, tvb, offset, -1,
ENC_ASCII|ENC_NA, &item_len);
offset += item_len;
proto_tree_add_item_ret_length(tree,
hf_quake_CCREP_SERVER_INFO_map, tvb, offset, -1,
ENC_ASCII|ENC_NA, &item_len);
offset += item_len;
proto_tree_add_item(tree, hf_quake_CCREP_SERVER_INFO_num_player,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_quake_CCREP_SERVER_INFO_max_player,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_quake_CCREQ_SERVER_INFO_version,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
}
static void
dissect_quake_CCREP_PLAYER_INFO
(tvbuff_t *tvb, proto_tree *tree)
{
gint offset = 0;
guint32 colors;
guint32 color_shirt;
guint32 color_pants;
proto_item *colors_item;
proto_tree *colors_tree;
gint item_len;
proto_tree_add_item(tree, hf_quake_CCREQ_PLAYER_INFO_player,
tvb, offset, 1, ENC_LITTLE_ENDIAN);
offset += 1;
proto_tree_add_item_ret_length(tree, hf_quake_CCREP_PLAYER_INFO_name,
tvb, offset, -1, ENC_ASCII|ENC_NA, &item_len);
offset += item_len;
colors = tvb_get_letohl(tvb, offset + 0);
color_shirt = (colors >> 4) & 0x0f;
color_pants = (colors ) & 0x0f;
colors_item = proto_tree_add_uint(tree,
hf_quake_CCREP_PLAYER_INFO_colors,
tvb, offset, 4, colors);
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, 1, color_shirt);
proto_tree_add_uint(colors_tree,
hf_quake_CCREP_PLAYER_INFO_colors_pants,
tvb, offset, 1, color_pants);
offset += 4;
proto_tree_add_item(tree, hf_quake_CCREP_PLAYER_INFO_frags,
tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_item(tree, hf_quake_CCREP_PLAYER_INFO_connect_time,
tvb, offset, 4, ENC_LITTLE_ENDIAN);
offset += 4;
proto_tree_add_item(tree, hf_quake_CCREP_PLAYER_INFO_address,
tvb, offset, -1, ENC_ASCII);
}
static void
dissect_quake_CCREP_RULE_INFO
(tvbuff_t *tvb, proto_tree *tree)
{
gint offset = 0;
gint item_len;
if (tvb_reported_length(tvb) == 0) return;
proto_tree_add_item_ret_length(tree, hf_quake_CCREP_RULE_INFO_rule,
tvb, offset, -1, ENC_ASCII|ENC_NA, &item_len);
offset += item_len;
proto_tree_add_item(tree, hf_quake_CCREP_RULE_INFO_value,
tvb, offset, -1, ENC_ASCII);
}
static void
dissect_quake_control(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint8 command;
int direction;
proto_tree *control_tree;
tvbuff_t *next_tvb;
command = tvb_get_guint8(tvb, 0);
direction = (command & 0x80) ? CCREP : CCREQ;
col_add_fstr(pinfo->cinfo, COL_INFO, "%s %s",
val_to_str(command,names_control_command, "%u"),
val_to_str(direction,names_control_direction,"%u"));
control_tree = proto_tree_add_subtree_format(tree, tvb,
0, -1, ett_quake_control, NULL, "Control %s: %s",
val_to_str(direction, names_control_direction, "%u"),
val_to_str(command, names_control_command, "%u"));
proto_tree_add_uint(control_tree, hf_quake_control_command,
tvb, 0, 1, command);
next_tvb = tvb_new_subset_remaining(tvb, 1);
switch (command) {
case CCREQ_CONNECT:
dissect_quake_CCREQ_CONNECT
(next_tvb, control_tree);
break;
case CCREQ_SERVER_INFO:
dissect_quake_CCREQ_SERVER_INFO
(next_tvb, control_tree);
break;
case CCREQ_PLAYER_INFO:
dissect_quake_CCREQ_PLAYER_INFO
(next_tvb, control_tree);
break;
case CCREQ_RULE_INFO:
dissect_quake_CCREQ_RULE_INFO
(next_tvb, 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, control_tree);
break;
case CCREP_SERVER_INFO:
dissect_quake_CCREP_SERVER_INFO
(next_tvb, control_tree);
break;
case CCREP_PLAYER_INFO:
dissect_quake_CCREP_PLAYER_INFO
(next_tvb, control_tree);
break;
case CCREP_RULE_INFO:
dissect_quake_CCREP_RULE_INFO
(next_tvb, control_tree);
break;
default:
call_data_dissector(next_tvb, pinfo, control_tree);
break;
}
}
static int
dissect_quake(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *quake_tree;
proto_item *quake_item;
guint16 flags;
proto_item *flags_item;
proto_tree *flags_tree;
guint32 sequence = 0;
tvbuff_t *next_tvb;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "QUAKE");
col_clear(pinfo->cinfo, COL_INFO);
flags = tvb_get_ntohs(tvb, 2);
quake_item = proto_tree_add_item(tree, proto_quake, tvb, 0, -1, ENC_NA);
quake_tree = proto_item_add_subtree(quake_item, ett_quake);
flags_item = proto_tree_add_item(quake_tree, hf_quake_header_flags,
tvb, 2, 2, ENC_BIG_ENDIAN);
flags_tree = proto_item_add_subtree(flags_item, ett_quake_flags);
proto_tree_add_item(flags_tree, hf_quake_header_flags_data,
tvb, 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(flags_tree, hf_quake_header_flags_ack,
tvb, 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(flags_tree, hf_quake_header_flags_no_ack,
tvb, 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(flags_tree, hf_quake_header_flags_endmsg,
tvb, 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(flags_tree, hf_quake_header_flags_unreliable,
tvb, 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(flags_tree, hf_quake_header_flags_control,
tvb, 2, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(quake_tree, hf_quake_header_length, tvb, 0, 2, ENC_BIG_ENDIAN);
if (flags == NETFLAG_CTL) {
next_tvb = tvb_new_subset_remaining(tvb, 4);
dissect_quake_control(next_tvb, pinfo, quake_tree);
return tvb_captured_length(tvb);
}
sequence = tvb_get_ntohl(tvb, 4);
col_add_fstr(pinfo->cinfo, COL_INFO, "seq 0x%x", sequence);
proto_tree_add_uint(quake_tree, hf_quake_header_sequence,
tvb, 4, 4, sequence);
next_tvb = tvb_new_subset_remaining(tvb, 8);
call_data_dissector(next_tvb, pinfo, quake_tree);
return tvb_captured_length(tvb);
}
void proto_reg_handoff_quake(void);
void
proto_register_quake(void)
{
static hf_register_info hf[] = {
{ &hf_quake_header_flags,
{ "Flags", "quake.header.flags",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake_header_flags_data,
{ "Data", "quake.header.flags.data",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), NETFLAG_DATA,
NULL, HFILL }},
{ &hf_quake_header_flags_ack,
{ "Acknowledgment", "quake.header.flags.ack",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), NETFLAG_ACK,
NULL, HFILL }},
{ &hf_quake_header_flags_no_ack,
{ "No Acknowledgment", "quake.header.flags.no_ack",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), NETFLAG_NAK,
NULL, HFILL }},
{ &hf_quake_header_flags_endmsg,
{ "End Of Message", "quake.header.flags.endmsg",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), NETFLAG_EOM,
NULL, HFILL }},
{ &hf_quake_header_flags_unreliable,
{ "Unreliable", "quake.header.flags.unreliable",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), NETFLAG_UNRELIABLE,
NULL, HFILL }},
{ &hf_quake_header_flags_control,
{ "Control", "quake.header.flags.control",
FT_BOOLEAN, 16, TFS(&tfs_set_notset), NETFLAG_CTL,
NULL, HFILL }},
{ &hf_quake_header_length,
{ "Length", "quake.header.length",
FT_UINT16, BASE_DEC, NULL, 0x0,
"full data length", HFILL }},
{ &hf_quake_header_sequence,
{ "Sequence", "quake.header.sequence",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Sequence Number", HFILL }},
{ &hf_quake_control_command,
{ "Command", "quake.control.command",
FT_UINT8, BASE_HEX, VALS(names_control_command), 0x0,
"Control Command", HFILL }},
{ &hf_quake_CCREQ_CONNECT_game,
{ "Game", "quake.control.connect.game",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Game Name", HFILL }},
{ &hf_quake_CCREQ_CONNECT_version,
{ "Version", "quake.control.connect.version",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Game Protocol Version Number", HFILL }},
{ &hf_quake_CCREQ_SERVER_INFO_game,
{ "Game", "quake.control.server_info.game",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Game Name", HFILL }},
{ &hf_quake_CCREQ_SERVER_INFO_version,
{ "Version", "quake.control.server_info.version",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Game Protocol Version Number", HFILL }},
{ &hf_quake_CCREQ_PLAYER_INFO_player,
{ "Player", "quake.control.player_info.player",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake_CCREQ_RULE_INFO_lastrule,
{ "Last Rule", "quake.control.rule_info.lastrule",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Last Rule Name", HFILL }},
{ &hf_quake_CCREP_ACCEPT_port,
{ "Port", "quake.control.accept.port",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Game Data Port", HFILL }},
{ &hf_quake_CCREP_REJECT_reason,
{ "Reason", "quake.control.reject.reason",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Reject Reason", HFILL }},
{ &hf_quake_CCREP_SERVER_INFO_address,
{ "Address", "quake.control.server_info.address",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Server Address", HFILL }},
{ &hf_quake_CCREP_SERVER_INFO_server,
{ "Server", "quake.control.server_info.server",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Server Name", HFILL }},
{ &hf_quake_CCREP_SERVER_INFO_map,
{ "Map", "quake.control.server_info.map",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Map Name", HFILL }},
{ &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", HFILL }},
{ &hf_quake_CCREP_SERVER_INFO_max_player,
{ "Maximal Number of Players", "quake.control.server_info.max_player",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_quake_CCREP_PLAYER_INFO_name,
{ "Name", "quake.control.player_info.name",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Player Name", HFILL }},
{ &hf_quake_CCREP_PLAYER_INFO_colors,
{ "Colors", "quake.control.player_info.colors",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Player Colors", HFILL }},
{ &hf_quake_CCREP_PLAYER_INFO_colors_shirt,
{ "Shirt", "quake.control.player_info.colors.shirt",
FT_UINT8, BASE_DEC, VALS(names_colors), 0x0,
"Shirt Color", HFILL }},
{ &hf_quake_CCREP_PLAYER_INFO_colors_pants,
{ "Pants", "quake.control.player_info.colors.pants",
FT_UINT8, BASE_DEC, VALS(names_colors), 0x0,
"Pants Color", HFILL }},
{ &hf_quake_CCREP_PLAYER_INFO_frags,
{ "Frags", "quake.control.player_info.frags",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Player Frags", HFILL }},
{ &hf_quake_CCREP_PLAYER_INFO_connect_time,
{ "Connect Time", "quake.control.player_info.connect_time",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Player Connect Time", HFILL }},
{ &hf_quake_CCREP_PLAYER_INFO_address,
{ "Address", "quake.control.player_info.address",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Player Address", HFILL }},
{ &hf_quake_CCREP_RULE_INFO_rule,
{ "Rule", "quake.control.rule_info.rule",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Rule Name", HFILL }},
{ &hf_quake_CCREP_RULE_INFO_value,
{ "Value", "quake.control.rule_info.value",
FT_STRINGZ, BASE_NONE, NULL, 0x0,
"Rule Value", HFILL }},
};
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)
{
quake_handle = create_dissector_handle(dissect_quake, proto_quake);
dissector_add_uint_with_preference("udp.port", DEFAULTnet_hostport, quake_handle);
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
View Git Blame Copy Permalink