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/* packet-aim-chat.c
* Routines for AIM Instant Messenger (OSCAR) dissection, SNAC Chat
* Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
* Copyright 2000, Ralf Hoelzer <ralf@well.com>
*
* $Id: packet-aim-chat.c,v 1.5 2004/06/16 07:51:21 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <glib.h>
#include <epan/packet.h>
#include <epan/strutil.h>
#include "packet-tcp.h"
#include "packet-aim.h"
#include "prefs.h"
/* SNAC families */
#define FAMILY_CHAT 0x000E
/* Family Chat */
#define FAMILY_CHAT_ERROR 0x0001
#define FAMILY_CHAT_ROOMINFOUPDATE 0x0002
#define FAMILY_CHAT_USERJOIN 0x0003
#define FAMILY_CHAT_USERLEAVE 0x0004
#define FAMILY_CHAT_OUTGOINGMSG 0x0005
#define FAMILY_CHAT_INCOMINGMSG 0x0006
#define FAMILY_CHAT_EVIL_REQ 0x0007
#define FAMILY_CHAT_EVIL_REPLY 0x0008
#define FAMILY_CHAT_DEFAULT 0xffff
static const value_string aim_fnac_family_chat[] = {
{ FAMILY_CHAT_ERROR, "Error" },
{ FAMILY_CHAT_ROOMINFOUPDATE, "Room Info Update" },
{ FAMILY_CHAT_USERJOIN, "User Join" },
{ FAMILY_CHAT_USERLEAVE, "User Leave" },
{ FAMILY_CHAT_OUTGOINGMSG, "Outgoing Message" },
{ FAMILY_CHAT_INCOMINGMSG, "Incoming Message" },
{ FAMILY_CHAT_EVIL_REQ, "Evil Request" },
{ FAMILY_CHAT_EVIL_REPLY, "Evil Reply" },
{ FAMILY_CHAT_DEFAULT, "Chat Default" },
{ 0, NULL }
};
#define AIM_CHAT_TLV_BROWSABLE_TREE 0x001
#define AIM_CHAT_TLV_CLASS_EXCLUSIVE 0x002
#define AIM_CHAT_TLV_MAX_CONCURRENT_ROOMS 0x003
#define AIM_CHAT_TLV_MAX_ROOM_NAME_LEN 0x004
#define AIM_CHAT_TLV_ROOT_ROOMS 0x005
#define AIM_CHAT_TLV_SEARCH_TAGS 0x006
#define AIM_CHAT_TLV_CHILD_ROOMS 0x065
#define AIM_CHAT_TLV_CONTAINS_USER_CLASS 0x066
#define AIM_CHAT_TLV_CONTAINS_USER_ARRAY 0x067
static const aim_tlv chat_tlvs[] = {
{ AIM_CHAT_TLV_BROWSABLE_TREE, "Browsable tree", dissect_aim_tlv_value_bytes },
{ AIM_CHAT_TLV_CLASS_EXCLUSIVE, "Exclusively for class", dissect_aim_tlv_value_userclass },
{ AIM_CHAT_TLV_MAX_CONCURRENT_ROOMS, "Max. number of concurrent rooms", dissect_aim_tlv_value_uint8 },
{ AIM_CHAT_TLV_MAX_ROOM_NAME_LEN, "Max. length of room name", dissect_aim_tlv_value_uint8 },
{ AIM_CHAT_TLV_ROOT_ROOMS, "Root Rooms", dissect_aim_tlv_value_bytes },
{ AIM_CHAT_TLV_SEARCH_TAGS, "Search Tags", dissect_aim_tlv_value_bytes },
{ AIM_CHAT_TLV_CHILD_ROOMS, "Child Rooms", dissect_aim_tlv_value_bytes },
{ AIM_CHAT_TLV_CONTAINS_USER_CLASS, "Contains User Class", dissect_aim_tlv_value_bytes },
{ AIM_CHAT_TLV_CONTAINS_USER_ARRAY, "Contains User Array", dissect_aim_tlv_value_bytes },
{ 0, NULL, NULL }
};
/* Initialize the protocol and registered fields */
static int proto_aim_chat = -1;
/* Initialize the subtree pointers */
static gint ett_aim_chat = -1;
static int dissect_aim_snac_chat(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
guint8 buddyname_length = 0;
int offset = 0;
struct aiminfo *aiminfo = pinfo->private_data;
char buddyname[MAX_BUDDYNAME_LENGTH + 1];
guchar msg[1000];
proto_item *ti;
proto_tree *chat_tree = NULL;
if(tree) {
ti = proto_tree_add_text(tree, tvb, 0, -1, "Chat Service");
chat_tree = proto_item_add_subtree(ti, ett_aim_chat);
}
switch(aiminfo->subtype)
{
case FAMILY_CHAT_ERROR:
return dissect_aim_snac_error(tvb, pinfo, offset, chat_tree);
case FAMILY_CHAT_USERLEAVE:
case FAMILY_CHAT_USERJOIN:
while(tvb_length_remaining(tvb, offset) > 0) {
offset = dissect_aim_userinfo(tvb, pinfo, offset, chat_tree);
}
return offset;
case FAMILY_CHAT_EVIL_REQ:
case FAMILY_CHAT_EVIL_REPLY:
case FAMILY_CHAT_ROOMINFOUPDATE:
/* FIXME */
return 0;
case FAMILY_CHAT_OUTGOINGMSG:
/* channel message from client */
aim_get_message( msg, tvb, 40 + buddyname_length, tvb_length(tvb)
- 40 - buddyname_length );
if (check_col(pinfo->cinfo, COL_INFO))
col_append_fstr(pinfo->cinfo, COL_INFO, " -> %s", msg);
return tvb_length(tvb);
case FAMILY_CHAT_INCOMINGMSG:
/* channel message to client */
buddyname_length = aim_get_buddyname( buddyname, tvb, 30, 31 );
aim_get_message( msg, tvb, 36 + buddyname_length, tvb_length(tvb)
- 36 - buddyname_length );
if (check_col(pinfo->cinfo, COL_INFO)) {
col_append_fstr(pinfo->cinfo, COL_INFO, "from: %s", buddyname);
col_append_fstr(pinfo->cinfo, COL_INFO, " -> %s", msg);
}
if(chat_tree) {
proto_tree_add_text(chat_tree, tvb, 31, buddyname_length,
"Screen Name: %s",
format_text(buddyname, buddyname_length));
}
return tvb_length(tvb);
default:
return 0;
}
}
/* Register the protocol with Ethereal */
void
proto_register_aim_chat(void)
{
/* Setup list of header fields */
/*FIXME
static hf_register_info hf[] = {
};*/
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_aim_chat,
};
/* Register the protocol name and description */
proto_aim_chat = proto_register_protocol("AIM Chat Service", "AIM Chat", "aim_chat");
/* Required function calls to register the header fields and subtrees used */
/*FIXME
proto_register_field_array(proto_aim_chat, hf, array_length(hf));*/
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_aim_chat(void)
{
dissector_handle_t aim_handle;
aim_handle = new_create_dissector_handle(dissect_aim_snac_chat, proto_aim_chat);
dissector_add("aim.family", FAMILY_CHAT, aim_handle);
aim_init_family(FAMILY_CHAT, "Chat", aim_fnac_family_chat);
}
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