diff options
Diffstat (limited to 'epan/dissectors/packet-quake2.c')
| -rw-r--r-- | epan/dissectors/packet-quake2.c | 932 |
1 files changed, 932 insertions, 0 deletions
diff --git a/epan/dissectors/packet-quake2.c b/epan/dissectors/packet-quake2.c new file mode 100644 index 0000000000..188077e3e4 --- /dev/null +++ b/epan/dissectors/packet-quake2.c @@ -0,0 +1,932 @@ +/* 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 + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <glib.h> +#include <epan/packet.h> +#include "prefs.h" + +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_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; + + +static dissector_handle_t data_handle; + +#define PORT_MASTER 27910 +static unsigned int 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 = NULL; + proto_item *cl_item = NULL; + guint8 *text; + int len; + int offset; + + guint32 marker; + + marker = tvb_get_ntohl(tvb, 0); + if (tree) { + cl_item = proto_tree_add_text(tree, tvb, + 0, -1, "Connectionless"); + if (cl_item) + cl_tree = proto_item_add_subtree( + cl_item, ett_quake2_connectionless); + } + + if (cl_tree) { + 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_length_remaining(tvb, offset); + if (cl_tree) { + text = tvb_get_string(tvb, offset, len); + proto_tree_add_string(cl_tree, hf_quake2_connectionless_text, + tvb, offset, len, text); + g_free(text); + } + 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 + + guint8 chksum; + guint32 lastframe; + int i, offset = 0; + enum { OFFSET, VALUE, SIZE }; + struct movement { + guint8 bits[SIZE]; + guint16 angles[3][SIZE]; + gint16 movement[3][SIZE]; + guint8 buttons[SIZE]; + guint8 lightlevel[SIZE]; + guint8 msec[SIZE]; + guint8 impulse[SIZE]; + } move[MOVES+1]; + + chksum = tvb_get_guint8(tvb, offset); + offset++; + lastframe = tvb_get_letohl(tvb, offset); + offset += 4; + + for (i=0; i < MOVES; i++) { + move[i].bits[VALUE] = tvb_get_guint8(tvb, offset); + move[i].bits[OFFSET] = offset; + offset++; + if (move[i].bits[VALUE] & CM_ANGLE1) { + move[i].angles[0][VALUE] = tvb_get_letohs(tvb, offset); + move[i].angles[0][OFFSET] = offset; + offset += 2; + } + if (move[i].bits[VALUE] & CM_ANGLE2) { + move[i].angles[1][VALUE] = tvb_get_letohs(tvb, offset); + move[i].angles[1][OFFSET] = offset; + offset += 2; + } + if (move[i].bits[VALUE] & CM_ANGLE3) { + move[i].angles[2][VALUE] = tvb_get_letohs(tvb, offset); + move[i].angles[2][OFFSET] = offset; + offset += 2; + } + if (move[i].bits[VALUE] & CM_FORWARD) { + move[i].movement[0][VALUE] = tvb_get_letohs(tvb, offset); + move[i].movement[0][OFFSET] = offset; + offset += 2; + } + if (move[i].bits[VALUE] & CM_SIDE) { + move[i].movement[1][VALUE] = tvb_get_letohs(tvb, offset); + move[i].movement[1][OFFSET] = offset; + offset += 2; + } + if (move[i].bits[VALUE] & CM_UP) { + move[i].movement[2][VALUE] = tvb_get_letohs(tvb, offset); + move[i].movement[2][OFFSET] = offset; + offset += 2; + } + if (move[i].bits[VALUE] & CM_BUTTONS) { + move[i].buttons[VALUE] = tvb_get_guint8(tvb, offset); + move[i].buttons[OFFSET] = offset; + offset++; + } + if (move[i].bits[VALUE] & CM_IMPULSE) { + move[i].impulse[VALUE] = tvb_get_guint8(tvb, offset); + move[i].impulse[OFFSET] = offset; + offset++; + } + + move[i].msec[VALUE] = tvb_get_guint8(tvb, offset); + move[i].msec[OFFSET] = offset; + offset++; + move[i].lightlevel[VALUE] = tvb_get_guint8(tvb, offset); + move[i].lightlevel[OFFSET] = offset; + offset++; + } + + if (!tree) + return offset; + + proto_tree_add_uint(tree, hf_quake2_game_client_command_move_chksum, tvb, + 0, 1, chksum); + proto_tree_add_uint(tree, hf_quake2_game_client_command_move_lframe, tvb, + 1, 4, lastframe); + + move[MOVES].bits[OFFSET] = offset; + for (i=0; i < MOVES; i++) { + proto_item *move_item, *movebits_item, *bit_item; + proto_item *sub_tree, *field_tree; + #define SHORT2ANGLE(x) ((float)x/65536.0*360.0) + + move_item = proto_tree_add_text(tree, + tvb, + move[i].bits[OFFSET], + move[i+1].bits[OFFSET]-move[i].bits[OFFSET], + "Move %u", i+1); + sub_tree = proto_item_add_subtree(move_item, + ett_quake2_game_clc_cmd_move_moves); + + movebits_item = + proto_tree_add_uint(sub_tree, hf_quake2_game_client_command_move, + tvb, + move[i].bits[OFFSET], + 1, + move[i].bits[VALUE]); + + proto_tree_add_uint(sub_tree, + hf_quake2_game_client_command_move_msec, + tvb, move[i].msec[OFFSET], 1, move[i].msec[VALUE]); + proto_tree_add_uint(sub_tree, + hf_quake2_game_client_command_move_lightlevel, + tvb, move[i].lightlevel[OFFSET], 1, move[i].lightlevel[VALUE]); + + if (move[i].bits[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[VALUE] & CM_ANGLE1) { + bit_item = proto_tree_add_uint(field_tree, + hf_quake2_game_client_command_move_bitfield_angles1, tvb, + move[i].angles[0][OFFSET], 2, move[i].bits[VALUE]); + proto_item_append_text(bit_item, " (%d", move[i].angles[0][VALUE]); + proto_item_append_text(bit_item, " = %.2f deg)", + SHORT2ANGLE(move[i].angles[0][VALUE])); + } + + if (move[i].bits[VALUE] & CM_ANGLE2) { + bit_item = proto_tree_add_uint(field_tree, + hf_quake2_game_client_command_move_bitfield_angles2, tvb, + move[i].angles[1][OFFSET], 2, move[i].bits[VALUE]); + proto_item_append_text(bit_item, " (%d", move[i].angles[1][VALUE]); + proto_item_append_text(bit_item, " = %.2f deg)", + SHORT2ANGLE(move[i].angles[1][VALUE])); + } + if (move[i].bits[VALUE] & CM_ANGLE3) { + bit_item = proto_tree_add_uint(field_tree, + hf_quake2_game_client_command_move_bitfield_angles3, tvb, + move[i].angles[2][OFFSET], 2, move[i].bits[VALUE]); + proto_item_append_text(bit_item, " (%d", move[i].angles[2][VALUE]); + proto_item_append_text(bit_item, " = %.2f deg)", + SHORT2ANGLE(move[i].angles[2][VALUE])); + } + if (move[i].bits[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][OFFSET], 2, move[i].bits[VALUE]); + proto_item_append_text(bit_item, " (%hd)", + move[i].movement[0][VALUE]); + } + if (move[i].bits[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][OFFSET], 2, move[i].bits[VALUE]); + proto_item_append_text(bit_item, " (%hd)", + move[i].movement[1][VALUE]); + } + if (move[i].bits[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][OFFSET], 2, move[i].bits[VALUE]); + proto_item_append_text(bit_item, " (%hd)", + move[i].movement[2][VALUE]); + } + if (move[i].bits[VALUE] & CM_BUTTONS) { + bit_item = proto_tree_add_uint(field_tree, + hf_quake2_game_client_command_move_bitfield_buttons, tvb, + move[i].buttons[OFFSET], 1, move[i].bits[VALUE]); + proto_item_append_text(bit_item, " (%d)", + move[i].buttons[VALUE]); + if (move[i].buttons[VALUE] & BUTTON_ATTACK) + proto_item_append_text(bit_item, " (Attack)"); + if (move[i].buttons[VALUE] & BUTTON_USE) + proto_item_append_text(bit_item, " (Use)"); + if (move[i].buttons[VALUE] & BUTTON_ANY) + proto_item_append_text(bit_item, " (Any)"); + } + if (move[i].bits[VALUE] & CM_IMPULSE) { + bit_item = proto_tree_add_uint(field_tree, + hf_quake2_game_client_command_move_bitfield_impulse, tvb, + move[i].impulse[OFFSET], 1, move[i].bits[VALUE]); + proto_item_append_text(bit_item, " (%d)", + move[i].impulse[VALUE]); + } + + } + + return offset; +} + +static int +dissect_quake2_client_commands_uinfo(tvbuff_t *tvb, packet_info *pinfo _U_, + proto_tree *tree) +{ + guint len; + proto_item *userinfo_item; + + len = tvb_strsize(tvb, 0); + + if (tree) { + userinfo_item = proto_tree_add_text(tree, tvb, 0, len, "Userinfo: %s", + tvb_get_ptr(tvb, 0, len)); + } + + return len; +} + +static int +dissect_quake2_client_commands_stringcmd(tvbuff_t *tvb, packet_info *pinfo _U_, + proto_tree *tree) +{ + guint len; + proto_item *stringcmd_item; + + len = tvb_strsize(tvb, 0); + + if (tree) { + stringcmd_item = proto_tree_add_text(tree, tvb, 0, len, "Command: %s", + tvb_get_ptr(tvb, 0, len)); + } + + 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; + guint rest_length = 0; + int offset = 0; + + do { + client_cmd_type = tvb_get_guint8(tvb, offset); + + if (tree) { + proto_item *cmd_type_item = proto_tree_add_uint(tree, + hf_quake2_game_client_command, tvb, offset, 1, + client_cmd_type); + + if (cmd_type_item) { + 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(tvb, offset, + rest_length, rest_length); + 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; + proto_item *cmd_type_item = NULL; + guint8 server_cmd_type; + guint rest_length = 0; + int offset = 0; + + server_cmd_type = tvb_get_guint8(tvb, offset); + + if (tree) { + cmd_type_item = proto_tree_add_uint(tree, + hf_quake2_game_server_command, tvb, offset, 1, server_cmd_type); + + if (cmd_type_item) { + 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(tvb, offset, rest_length, rest_length); + 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_dissector(data_handle, 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 = NULL; + proto_item *game_item = NULL; + guint32 seq1; + guint32 seq2; + int rel1; + int rel2; + int offset; + guint rest_length; + + direction = (pinfo->destport == gbl_quake2ServerPort) ? + DIR_C2S : DIR_S2C; + + if (tree) { + game_item = proto_tree_add_text(tree, tvb, + 0, -1, "Game"); + if (game_item) + game_tree = proto_item_add_subtree( + game_item, ett_quake2_game); + } + + offset = 0; + + seq1 = tvb_get_letohl(tvb, offset); + rel1 = seq1 & 0x80000000 ? 1 : 0; + seq1 &= ~0x80000000; + if (game_tree) { + proto_item *seq1_item = proto_tree_add_text(game_tree, + tvb, offset, 4, "Current Sequence: %u (%s)", + seq1, val_to_str(rel1,names_reliable,"%u")); + if (seq1_item) { + proto_tree *seq1_tree = proto_item_add_subtree( + seq1_item, ett_quake2_game_seq1); + 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_item *seq2_item = proto_tree_add_text(game_tree, + tvb, offset, 4, "Acknowledge Sequence: %u (%s)", + seq2, val_to_str(rel2,names_reliable,"%u")); + if (seq2_item) { + proto_tree *seq2_tree = proto_item_add_subtree( + seq2_item, ett_quake2_game_seq2); + 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(tvb, offset, rest_length , rest_length); + + if (direction == DIR_C2S) { + proto_item *c_item = NULL; + proto_tree *c_tree = NULL; + if (tree) { + c_item = proto_tree_add_text(game_tree, next_tvb, + 0, -1, "Client Commands"); + if (c_item) { + c_tree = proto_item_add_subtree( + c_item, ett_quake2_game_clc); + } + } + dissect_quake2_client_commands(next_tvb, pinfo, c_tree); + } + else { + proto_item *c_item = NULL; + proto_tree *c_tree = NULL; + if (tree) { + c_item = proto_tree_add_text(game_tree, next_tvb, + 0, -1, "Server Commands"); + if (c_item) { + c_tree = proto_item_add_subtree( + c_item, ett_quake2_game_svc); + } + } + dissect_quake2_server_commands(next_tvb, pinfo, c_tree); + } + } +} + + +static void +dissect_quake2(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_tree *quake2_tree = NULL; + proto_item *quake2_item = NULL; + int direction; + + direction = (pinfo->destport == gbl_quake2ServerPort) ? + DIR_C2S : DIR_S2C; + + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "QUAKE2"); + if (check_col(pinfo->cinfo, COL_INFO)) + col_set_str(pinfo->cinfo, COL_INFO, val_to_str(direction, + names_direction, "%u")); + + if (tree) { + quake2_item = proto_tree_add_item(tree, proto_quake2, + tvb, 0, -1, FALSE); + if (quake2_item) + quake2_tree = proto_item_add_subtree( + quake2_item, ett_quake2); + if (quake2_tree) { + 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) { + if (check_col(pinfo->cinfo, COL_INFO)) { + col_append_str(pinfo->cinfo, COL_INFO, " Connectionless"); + } + if (quake2_tree) + 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 { + if (check_col(pinfo->cinfo, COL_INFO)) { + col_append_str(pinfo->cinfo, COL_INFO, " Game"); + } + if (quake2_tree) + proto_tree_add_uint_format(quake2_tree, + hf_quake2_game, + tvb, 0, 0, 1, + "Type: Game"); + dissect_quake2_GamePacket( + tvb, pinfo, quake2_tree, direction); + } +} + + +void +proto_reg_handoff_quake2(void) +{ + static int Initialized=FALSE; + static dissector_handle_t quake2_handle; + static int ServerPort=0; + + if (!Initialized) { + quake2_handle = create_dissector_handle(dissect_quake2, + proto_quake2); + Initialized=TRUE; + } else { + dissector_delete("udp.port", ServerPort, quake2_handle); + } + + /* set port for future deletes */ + ServerPort=gbl_quake2ServerPort; + + dissector_add("udp.port", gbl_quake2ServerPort, quake2_handle); + data_handle = find_dissector("data"); +} + + +void +proto_register_quake2(void) +{ + static hf_register_info hf[] = { + { &hf_quake2_c2s, + { "Client to Server", "quake2.c2s", + FT_UINT32, BASE_DEC, NULL, 0x0, + "Client to Server", HFILL }}, + { &hf_quake2_s2c, + { "Server to Client", "quake2.s2c", + FT_UINT32, BASE_DEC, NULL, 0x0, + "Server to Client", HFILL }}, + { &hf_quake2_connectionless, + { "Connectionless", "quake2.connectionless", + FT_UINT32, BASE_DEC, NULL, 0x0, + "Connectionless", HFILL }}, + { &hf_quake2_game, + { "Game", "quake2.game", + FT_UINT32, BASE_DEC, NULL, 0x0, + "Game", HFILL }}, + { &hf_quake2_connectionless_marker, + { "Marker", "quake2.connectionless.marker", + FT_UINT32, BASE_HEX, NULL, 0x0, + "Marker", HFILL }}, + { &hf_quake2_connectionless_text, + { "Text", "quake2.connectionless.text", + FT_STRING, BASE_DEC, NULL, 0x0, + "Text", 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_DEC, 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_DEC, 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, "", 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, "", 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, "", 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, "", 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, "", 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, "", 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, "", 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, "", 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); +} |