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wireshark/epan/dissectors/packet-aim.c

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/* packet-aim.c
* Routines for AIM Instant Messenger (OSCAR) dissection
* Copyright 2000, Ralf Hoelzer <ralf@well.com>
* Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
* Copyright 2004, Devin Heitmueller <dheitmueller@netilla.com>
*
* $Id$
*
* 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 "isprint.h"
#include <epan/packet.h>
#include <epan/strutil.h>
#include "packet-tcp.h"
#include "packet-aim.h"
#include <epan/prefs.h>
#define TCP_PORT_AIM 5190
#define STRIP_TAGS 1
/* channels */
#define CHANNEL_NEW_CONN 0x01
#define CHANNEL_SNAC_DATA 0x02
#define CHANNEL_FLAP_ERR 0x03
#define CHANNEL_CLOSE_CONN 0x04
#define CHANNEL_KEEP_ALIVE 0x05
#define CLI_COOKIE 0x01
#define FAMILY_ALL_ERROR_INVALID_HEADER 0x0001
#define FAMILY_ALL_ERROR_SERVER_RATE_LIMIT_EXCEEDED 0x0002
#define FAMILY_ALL_ERROR_CLIENT_RATE_LIMIT_EXCEEDED 0x0003
#define FAMILY_ALL_ERROR_RECIPIENT_NOT_LOGGED_IN 0x0004
#define FAMILY_ALL_ERROR_REQUESTED_SERVICE_UNAVAILABLE 0x0005
#define FAMILY_ALL_ERROR_REQUESTED_SERVICE_NOT_DEFINED 0x0006
#define FAMILY_ALL_ERROR_OBSOLETE_SNAC 0x0007
#define FAMILY_ALL_ERROR_NOT_SUPPORTED_BY_SERVER 0x0008
#define FAMILY_ALL_ERROR_NOT_SUPPORTED_BY_CLIENT 0x0009
#define FAMILY_ALL_ERROR_REFUSED_BY_CLIENT 0x000a
#define FAMILY_ALL_ERROR_REPLY_TOO_BIG 0x000b
#define FAMILY_ALL_ERROR_RESPONSES_LOST 0x000c
#define FAMILY_ALL_ERROR_REQUEST_DENIED 0x000d
#define FAMILY_ALL_ERROR_INCORRECT_SNAC_FORMAT 0x000e
#define FAMILY_ALL_ERROR_INSUFFICIENT_RIGHTS 0x000f
#define FAMILY_ALL_ERROR_RECIPIENT_BLOCKED 0x0010
#define FAMILY_ALL_ERROR_SENDER_TOO_EVIL 0x0011
#define FAMILY_ALL_ERROR_RECEIVER_TOO_EVIL 0x0012
#define FAMILY_ALL_ERROR_USER_TEMP_UNAVAILABLE 0x0013
#define FAMILY_ALL_ERROR_NO_MATCH 0x0014
#define FAMILY_ALL_ERROR_LIST_OVERFLOW 0x0015
#define FAMILY_ALL_ERROR_REQUEST_AMBIGUOUS 0x0016
#define FAMILY_ALL_ERROR_SERVER_QUEUE_FULL 0x0017
#define FAMILY_ALL_ERROR_NOT_WHILE_ON_AOL 0x0018
static const value_string aim_flap_channels[] = {
{ CHANNEL_NEW_CONN, "New Connection" },
{ CHANNEL_SNAC_DATA, "SNAC Data" },
{ CHANNEL_FLAP_ERR, "FLAP-Level Error" },
{ CHANNEL_CLOSE_CONN, "Close Connection" },
{ CHANNEL_KEEP_ALIVE, "Keep Alive" },
{ 0, NULL }
};
static const value_string aim_snac_errors[] = {
{ FAMILY_ALL_ERROR_INVALID_HEADER, "Invalid SNAC Header" },
{ FAMILY_ALL_ERROR_SERVER_RATE_LIMIT_EXCEEDED, "Server rate limit exceeded" },
{ FAMILY_ALL_ERROR_CLIENT_RATE_LIMIT_EXCEEDED, "Client rate limit exceeded" },
{ FAMILY_ALL_ERROR_RECIPIENT_NOT_LOGGED_IN, "Recipient not logged in" },
{ FAMILY_ALL_ERROR_REQUESTED_SERVICE_UNAVAILABLE, "Requested service unavailable" },
{ FAMILY_ALL_ERROR_REQUESTED_SERVICE_NOT_DEFINED, "Requested service not defined" },
{ FAMILY_ALL_ERROR_OBSOLETE_SNAC, "Obsolete SNAC issued" },
{ FAMILY_ALL_ERROR_NOT_SUPPORTED_BY_SERVER, "Not supported by server" },
{ FAMILY_ALL_ERROR_NOT_SUPPORTED_BY_CLIENT, "Not supported by client" },
{ FAMILY_ALL_ERROR_REFUSED_BY_CLIENT, "Refused by client" },
{ FAMILY_ALL_ERROR_REPLY_TOO_BIG, "Reply too big" },
{ FAMILY_ALL_ERROR_RESPONSES_LOST, "Responses lost" },
{ FAMILY_ALL_ERROR_REQUEST_DENIED, "Request denied" },
{ FAMILY_ALL_ERROR_INCORRECT_SNAC_FORMAT, "Incorrect SNAC format" },
{ FAMILY_ALL_ERROR_INSUFFICIENT_RIGHTS, "Insufficient rights" },
{ FAMILY_ALL_ERROR_RECIPIENT_BLOCKED, "Recipient blocked" },
{ FAMILY_ALL_ERROR_SENDER_TOO_EVIL, "Sender too evil" },
{ FAMILY_ALL_ERROR_RECEIVER_TOO_EVIL, "Receiver too evil" },
{ FAMILY_ALL_ERROR_USER_TEMP_UNAVAILABLE, "User temporarily unavailable" },
{ FAMILY_ALL_ERROR_NO_MATCH, "No match" },
{ FAMILY_ALL_ERROR_LIST_OVERFLOW, "List overflow" },
{ FAMILY_ALL_ERROR_REQUEST_AMBIGUOUS, "Request ambiguous" },
{ FAMILY_ALL_ERROR_SERVER_QUEUE_FULL, "Server queue full" },
{ FAMILY_ALL_ERROR_NOT_WHILE_ON_AOL, "Not while on AOL" },
{ 0, NULL }
};
#define AIM_CLIENT_TLV_SCREEN_NAME 0x0001
#define AIM_CLIENT_TLV_NEW_ROASTED_PASSWORD 0x0002
#define AIM_CLIENT_TLV_CLIENT_ID_STRING 0x0003
#define AIM_CLIENT_TLV_ERRORURL 0x0004
#define AIM_CLIENT_TLV_BOS_SERVER_STRING 0x0005
#define AIM_CLIENT_TLV_AUTH_COOKIE 0x0006
#define AIM_CLIENT_TLV_ERRORCODE 0x0008
#define AIM_CLIENT_TLV_DISCONNECT_REASON 0x0009
#define AIM_CLIENT_TLV_RECONNECT_HOST 0x000a
#define AIM_CLIENT_TLV_URL 0x000b
#define AIM_CLIENT_TLV_DEBUG_DATA 0x000c
#define AIM_CLIENT_TLV_FAMILY_ID 0x000d
#define AIM_CLIENT_TLV_CLIENT_COUNTRY 0x000e
#define AIM_CLIENT_TLV_CLIENT_LANGUAGE 0x000f
#define AIM_CLIENT_TLV_EMAILADDR 0x0011
#define AIM_CLIENT_TLV_OLD_ROASTED_PASSWORD 0x0012
#define AIM_CLIENT_TLV_REGSTATUS 0x0013
#define AIM_CLIENT_TLV_CLIENT_DISTRIBUTION_NUM 0x0014
#define AIM_CLIENT_TLV_INVITEMESSAGE 0x0015
#define AIM_CLIENT_TLV_CLIENT_ID 0x0016
#define AIM_CLIENT_TLV_CLIENT_MAJOR_VERSION 0x0017
#define AIM_CLIENT_TLV_CLIENT_MINOR_VERSION 0x0018
#define AIM_CLIENT_TLV_CLIENT_LESSER_VERSION 0x0019
#define AIM_CLIENT_TLV_CLIENT_BUILD_NUMBER 0x001a
#define AIM_CLIENT_TLV_PASSWORD_MD5 0x0025
#define AIM_CLIENT_TLV_LATESTBETABUILD 0x0040
#define AIM_CLIENT_TLV_LATESTBETAURL 0x0041
#define AIM_CLIENT_TLV_LATESTBETAINFO 0x0042
#define AIM_CLIENT_TLV_LATESTBETANAME 0x0043
#define AIM_CLIENT_TLV_LATESTRELEASEBUILD 0x0044
#define AIM_CLIENT_TLV_LATESTRELEASEURL 0x0045
#define AIM_CLIENT_TLV_LATESTRELEASEINFO 0x0046
#define AIM_CLIENT_TLV_LATESTRELEASENAME 0x0047
#define AIM_CLIENT_TLV_BETA_DIGEST_SIG 0x0048
#define AIM_CLIENT_TLV_RELEASE_DIGEST_SIG 0x0049
#define AIM_CLIENT_TLV_CLIENTUSESSI 0x004a
#define AIM_CLIENT_TLV_CHANGE_PASSWORD_URL 0x0054
#define AIM_CLIENT_TLV_AWAITING_AUTH 0x0066
#define AIM_CLIENT_TLV_MEMBERS 0x00c8
#define AIM_CLIENT_TLV_VISIBILITY_BITS 0x00c9
#define AIM_CLIENT_TLV_PRIVACY 0x00ca
#define AIM_CLIENT_TLV_VISIBLE_CLASS 0x00cb
#define AIM_CLIENT_TLV_VISIBLE_MISC 0x00cc
#define AIM_CLIENT_TLV_ICQ2K_SHORTCUT 0x00cd
#define AIM_CLIENT_TLV_FIRST_LOADED_TIME 0x00d4
#define AIM_CLIENT_TLV_BUDDY_ICON_MD5SUM 0x00d5
#define AIM_CLIENT_TLV_GIVEN_NAME 0x0131
#define AIM_CLIENT_TLV_LOCAL_EMAIL 0x0137
#define AIM_CLIENT_TLV_LOCAL_SMS 0x013a
#define AIM_CLIENT_TLV_LOCAL_COMMENT 0x013c
#define AIM_CLIENT_TLV_LOCAL_PERSONAL_ALERT 0x013d
#define AIM_CLIENT_TLV_LOCAL_PERSONAL_SOUND 0x013e
#define AIM_CLIENT_TLV_FIRST_MESSAGE_SENT 0x0145
const aim_tlv client_tlvs[] = {
{ AIM_CLIENT_TLV_SCREEN_NAME, "Screen name", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_NEW_ROASTED_PASSWORD, "Roasted password array", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_OLD_ROASTED_PASSWORD, "Old roasted password array", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_CLIENT_ID_STRING, "Client id string (name, version)", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_CLIENT_ID, "Client id number", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_CLIENT_MAJOR_VERSION, "Client major version", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_CLIENT_MINOR_VERSION, "Client minor version", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_CLIENT_LESSER_VERSION, "Client lesser version", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_CLIENT_BUILD_NUMBER, "Client build number", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_PASSWORD_MD5, "Password Hash (MD5)", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_CLIENT_DISTRIBUTION_NUM, "Client distribution number", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_CLIENT_LANGUAGE, "Client language", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_CLIENT_COUNTRY, "Client country", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_BOS_SERVER_STRING, "BOS server string", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_AUTH_COOKIE, "Authorization cookie", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_ERRORURL, "Error URL", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_ERRORCODE, "Error Code", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_DISCONNECT_REASON, "Disconnect Reason", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_RECONNECT_HOST, "Reconnect Hostname", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_URL, "URL", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_DEBUG_DATA, "Debug Data", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_EMAILADDR, "Account Email address", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_REGSTATUS, "Registration Status", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_LATESTBETABUILD, "Latest Beta Build", dissect_aim_tlv_value_uint32 },
{ AIM_CLIENT_TLV_LATESTBETAURL, "Latest Beta URL", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LATESTBETAINFO, "Latest Beta Info", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LATESTBETANAME, "Latest Beta Name", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LATESTRELEASEBUILD, "Latest Release Build", dissect_aim_tlv_value_uint32 },
{ AIM_CLIENT_TLV_LATESTRELEASEURL, "Latest Release URL", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LATESTRELEASEINFO, "Latest Release Info", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LATESTRELEASENAME, "Latest Release Name", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_BETA_DIGEST_SIG, "Beta Digest Signature (MD5)" , dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_RELEASE_DIGEST_SIG, "Release Digest Signature (MD5)", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_CLIENTUSESSI, "Use SSI", dissect_aim_tlv_value_uint8 },
{ AIM_CLIENT_TLV_FAMILY_ID, "Service (SNAC Family) ID", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_CHANGE_PASSWORD_URL, "Change password url", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_AWAITING_AUTH, "Awaiting Authorization", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_MEMBERS, "Members of this Group", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_VISIBILITY_BITS, "Bitfield", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_PRIVACY, "Privacy Settings" , dissect_aim_tlv_value_uint8 },
{ AIM_CLIENT_TLV_VISIBLE_CLASS, "Visible To Classes", dissect_aim_tlv_value_userclass },
{ AIM_CLIENT_TLV_VISIBLE_MISC, "Allow Others to See Data", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_ICQ2K_SHORTCUT, "ICQ2K Shortcut List", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_FIRST_LOADED_TIME, "First Time Buddy Was Added (Unix Timestamp)" , dissect_aim_tlv_value_uint32 },
{ AIM_CLIENT_TLV_BUDDY_ICON_MD5SUM, "MD5SUM of Current Buddy Icon", dissect_aim_tlv_value_bytes },
{ AIM_CLIENT_TLV_GIVEN_NAME, "Locally Specified Buddy Name", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LOCAL_EMAIL, "Locally Specified Buddy Email", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LOCAL_SMS, "Locally Specified Buddy SMS", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LOCAL_COMMENT, "Locally Specified Buddy Comment", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_LOCAL_PERSONAL_ALERT, "Personal Alert for Buddy", dissect_aim_tlv_value_uint16 },
{ AIM_CLIENT_TLV_LOCAL_PERSONAL_SOUND, "Personal Sound for Buddy", dissect_aim_tlv_value_string },
{ AIM_CLIENT_TLV_FIRST_MESSAGE_SENT, " First Time Message Sent to Buddy (Unix Timestamp)", dissect_aim_tlv_value_uint32 },
{ 0, "Unknown", NULL },
};
static int dissect_aim_tlv_value_userstatus(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_);
static int dissect_aim_tlv_value_dcinfo(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_);
#define AIM_ONLINEBUDDY_USERCLASS 0x0001
#define AIM_ONLINEBUDDY_ONSINCE 0x0003
#define AIM_ONLINEBUDDY_IDLETIME 0x0004
#define AIM_ONLINEBUDDY_MEMBERSINCE 0x0005
#define AIM_ONLINEBUDDY_STATUS 0x0006
#define AIM_ONLINEBUDDY_TIMEUPDATE 0x0011
#define AIM_ONLINEBUDDY_IPADDR 0x000a
#define AIM_ONLINEBUDDY_DCINFO 0x000c
#define AIM_ONLINEBUDDY_CAPINFO 0x000d
#define AIM_ONLINEBUDDY_UNKNOWN 0x000e
#define AIM_ONLINEBUDDY_SESSIONLEN 0x000f
#define AIM_ONLINEBUDDY_ICQSESSIONLEN 0x0010
#define AIM_ONLINEBUDDY_AVAILMSG 0x001d
const aim_tlv onlinebuddy_tlvs[] = {
{ AIM_ONLINEBUDDY_USERCLASS, "User class", dissect_aim_tlv_value_userclass },
{ AIM_ONLINEBUDDY_ONSINCE, "Online since", dissect_aim_tlv_value_uint32 },
{ AIM_ONLINEBUDDY_IDLETIME, "Idle time (sec)", dissect_aim_tlv_value_uint16 },
{ AIM_ONLINEBUDDY_STATUS, "Online status", dissect_aim_tlv_value_userstatus },
{ AIM_ONLINEBUDDY_IPADDR, "User IP Address", dissect_aim_tlv_value_ipv4 },
{ AIM_ONLINEBUDDY_DCINFO, "DC Info", dissect_aim_tlv_value_dcinfo},
{ AIM_ONLINEBUDDY_CAPINFO, "Capability Info", dissect_aim_tlv_value_client_capabilities },
{ AIM_ONLINEBUDDY_MEMBERSINCE, "Member since", dissect_aim_tlv_value_time },
{ AIM_ONLINEBUDDY_UNKNOWN, "Unknown", dissect_aim_tlv_value_uint16 },
{ AIM_ONLINEBUDDY_TIMEUPDATE, "Time update", dissect_aim_tlv_value_bytes },
{ AIM_ONLINEBUDDY_SESSIONLEN, "Session Length (sec)", dissect_aim_tlv_value_uint32 },
{ AIM_ONLINEBUDDY_ICQSESSIONLEN, "ICQ Session Length (sec)", dissect_aim_tlv_value_uint32 },
{ AIM_ONLINEBUDDY_AVAILMSG, "Available Message", dissect_aim_tlv_value_bytes },
{ 0, "Unknown", NULL }
};
#define DC_DISABLED 0x0000
#define DC_HTTPS 0x0001
#define DC_SOCKS 0x0002
#define DC_NORMAL 0x0003
#define DC_IMPOSSIBLE 0x0004
static const value_string dc_types[] = {
{ DC_DISABLED, "DC disabled" },
{ DC_HTTPS, "DC thru firewall or HTTPS proxy" },
{ DC_SOCKS, "DC thru SOCKS proxy" },
{ DC_NORMAL, "Regular connection" },
{ DC_IMPOSSIBLE, "DC not possible " },
{ 0, "Unknown" },
};
#define PROTO_VERSION_ICQ98 0x0004
#define PROTO_VERSION_ICQ99 0x0006
#define PROTO_VERSION_ICQ2K 0x0007
#define PROTO_VERSION_ICQ2K1 0x0008
#define PROTO_VERSION_ICQLITE 0x0009
#define PROTO_VERSION_ICQ2K3B 0x000A
static const value_string protocol_versions[] = {
{ PROTO_VERSION_ICQ98, "ICQ '98" },
{ PROTO_VERSION_ICQ99, "ICQ '99" },
{ PROTO_VERSION_ICQ2K, "ICQ 2000" },
{ PROTO_VERSION_ICQ2K1, "ICQ 2001" },
{ PROTO_VERSION_ICQLITE, "ICQ Lite" },
{ PROTO_VERSION_ICQ2K3B, "ICQ 2003B" },
{ 0, "Unknown" },
};
static GList *families = NULL;
#define AIM_MOTD_TLV_MOTD 0x000B
const aim_tlv motd_tlvs[] = {
{ AIM_MOTD_TLV_MOTD, "Message of the day message", dissect_aim_tlv_value_string },
{ 0, "Unknown", NULL }
};
#define CLASS_UNCONFIRMED 0x0001
#define CLASS_ADMINISTRATOR 0x0002
#define CLASS_AOL 0x0004
#define CLASS_COMMERCIAL 0x0008
#define CLASS_FREE 0x0010
#define CLASS_AWAY 0x0020
#define CLASS_ICQ 0x0040
#define CLASS_WIRELESS 0x0080
#define CLASS_UNKNOWN100 0x0100
#define CLASS_UNKNOWN200 0x0200
#define CLASS_UNKNOWN400 0x0400
#define CLASS_UNKNOWN800 0x0800
#define FNAC_FLAG_NEXT_IS_RELATED 0x0001
#define FNAC_FLAG_CONTAINS_VERSION 0x8000
#define FNAC_TLV_FAMILY_VERSION 0x0001
static const aim_tlv fnac_tlvs[] = {
{ FNAC_TLV_FAMILY_VERSION, "SNAC Family Version", dissect_aim_tlv_value_uint16 },
{ 0, "Unknown", NULL }
};
static int dissect_aim(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static guint get_aim_pdu_len(tvbuff_t *tvb, int offset);
static void dissect_aim_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static void dissect_aim_newconn(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *tree);
static void dissect_aim_snac(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree, proto_tree *root_tree);
static void dissect_aim_flap_err(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree);
static void dissect_aim_keep_alive(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree);
static void dissect_aim_close_conn(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree);
static void dissect_aim_unknown_channel(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree);
static dissector_table_t subdissector_table;
/* Initialize the protocol and registered fields */
static int proto_aim = -1;
static int hf_aim_cmd_start = -1;
static int hf_aim_channel = -1;
static int hf_aim_seqno = -1;
static int hf_aim_data = -1;
static int hf_aim_data_len = -1;
static int hf_aim_signon_challenge_len = -1;
static int hf_aim_signon_challenge = -1;
static int hf_aim_fnac_family = -1;
static int hf_aim_fnac_subtype = -1;
static int hf_aim_fnac_flags = -1;
static int hf_aim_fnac_flag_next_is_related = -1;
static int hf_aim_fnac_flag_contains_version = -1;
static int hf_aim_fnac_id = -1;
static int hf_aim_infotype = -1;
static int hf_aim_buddyname_len = -1;
static int hf_aim_buddyname = -1;
static int hf_aim_userinfo_warninglevel = -1;
static int hf_aim_snac_error = -1;
static int hf_aim_tlvcount = -1;
static int hf_aim_authcookie = -1;
static int hf_aim_userclass_unconfirmed = -1;
static int hf_aim_userclass_administrator = -1;
static int hf_aim_userclass_aol = -1;
static int hf_aim_userclass_commercial = -1;
static int hf_aim_userclass_free = -1;
static int hf_aim_userclass_away = -1;
static int hf_aim_userclass_icq = -1;
static int hf_aim_userclass_wireless = -1;
static int hf_aim_userclass_unknown100 = -1;
static int hf_aim_userclass_unknown200 = -1;
static int hf_aim_userclass_unknown400 = -1;
static int hf_aim_userclass_unknown800 = -1;
static int hf_aim_messageblock_featuresdes = -1;
static int hf_aim_messageblock_featureslen = -1;
static int hf_aim_messageblock_features = -1;
static int hf_aim_messageblock_info = -1;
static int hf_aim_messageblock_len = -1;
static int hf_aim_messageblock_charset = -1;
static int hf_aim_messageblock_charsubset = -1;
static int hf_aim_messageblock_message = -1;
static int hf_aim_dcinfo_ip = -1;
static int hf_aim_dcinfo_tcpport = -1;
static int hf_aim_dcinfo_type = -1;
static int hf_aim_dcinfo_proto_version = -1;
static int hf_aim_dcinfo_auth_cookie = -1;
static int hf_aim_dcinfo_webport = -1;
static int hf_aim_dcinfo_client_future = -1;
static int hf_aim_dcinfo_last_info_update = -1;
static int hf_aim_dcinfo_last_ext_info_update = -1;
static int hf_aim_dcinfo_last_ext_status_update = -1;
static int hf_aim_dcinfo_unknown = -1;
/* Initialize the subtree pointers */
static gint ett_aim = -1;
static gint ett_aim_dcinfo = -1;
static gint ett_aim_buddyname= -1;
static gint ett_aim_fnac = -1;
static gint ett_aim_fnac_flags = -1;
static gint ett_aim_tlv = -1;
static gint ett_aim_userclass = -1;
static gint ett_aim_messageblock = -1;
static gint ett_aim_client_capabilities = -1;
/* desegmentation of AIM over TCP */
static gboolean aim_desegment = TRUE;
/* Code to actually dissect the packets */
static int dissect_aim(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
/* check, if this is really an AIM packet, they start with 0x2a */
/* XXX - I've seen some stuff starting with 0x5a followed by 0x2a */
if(tvb_bytes_exist(tvb, 0, 1) && tvb_get_guint8(tvb, 0) != 0x2a) {
/* Not an instant messenger packet, just happened to use the same port */
/* XXX - if desegmentation disabled, this might be a continuation
packet, not a non-AIM packet */
return 0;
}
tcp_dissect_pdus(tvb, pinfo, tree, aim_desegment, 6, get_aim_pdu_len,
dissect_aim_pdu);
return tvb_length(tvb);
}
static guint get_aim_pdu_len(tvbuff_t *tvb, int offset)
{
guint16 plen;
/*
* Get the length of the AIM packet.
*/
plen = tvb_get_ntohs(tvb, offset + 4);
/*
* That length doesn't include the length of the header itself; add that in.
*/
return plen + 6;
}
static void dissect_aim_pdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
/* Header fields */
unsigned char hdr_channel; /* channel ID */
unsigned short hdr_sequence_no; /* Internal frame sequence number, not needed */
unsigned short hdr_data_field_length; /* length of data within frame */
int offset=0;
/* Set up structures we will need to add the protocol subtree and manage it */
proto_item *ti;
proto_tree *aim_tree = NULL;
/* Make entries in Protocol column and Info column on summary display */
if (check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "AIM");
if (check_col(pinfo->cinfo, COL_INFO))
col_add_str(pinfo->cinfo, COL_INFO, "AOL Instant Messenger");
/* get relevant header information */
offset += 1; /* XXX - put the identifier into the tree? */
hdr_channel = tvb_get_guint8(tvb, offset);
offset += 1;
hdr_sequence_no = tvb_get_ntohs(tvb, offset);
offset += 2;
hdr_data_field_length = tvb_get_ntohs(tvb, offset);
offset += 2;
/* In the interest of speed, if "tree" is NULL, don't do any work not
necessary to generate protocol tree items. */
if (tree) {
ti = proto_tree_add_item(tree, proto_aim, tvb, 0, -1, FALSE);
aim_tree = proto_item_add_subtree(ti, ett_aim);
proto_tree_add_uint(aim_tree, hf_aim_cmd_start, tvb, 0, 1, '*');
proto_tree_add_item(aim_tree, hf_aim_channel, tvb, 1, 1, FALSE);
proto_tree_add_uint(aim_tree, hf_aim_seqno, tvb, 2, 2, hdr_sequence_no);
proto_tree_add_uint(aim_tree, hf_aim_data_len, tvb, 4, 2, hdr_data_field_length);
}
switch(hdr_channel)
{
case CHANNEL_NEW_CONN:
dissect_aim_newconn(tvb, pinfo, offset, aim_tree);
break;
case CHANNEL_SNAC_DATA:
dissect_aim_snac(tvb, pinfo, offset, aim_tree, tree);
break;
case CHANNEL_FLAP_ERR:
dissect_aim_flap_err(tvb, pinfo, offset, aim_tree);
break;
case CHANNEL_CLOSE_CONN:
dissect_aim_close_conn(tvb, pinfo, offset, aim_tree);
break;
case CHANNEL_KEEP_ALIVE:
dissect_aim_keep_alive(tvb, pinfo, offset, aim_tree);
break;
default:
dissect_aim_unknown_channel(tvb, pinfo, offset, aim_tree);
break;
}
}
const aim_subtype *aim_get_subtype( guint16 famnum, guint16 subtype )
{
GList *gl = families;
while(gl) {
aim_family *fam = gl->data;
if(fam->family == famnum) {
int i;
for(i = 0; fam->subtypes[i].name; i++) {
if(fam->subtypes[i].id == subtype) return &(fam->subtypes[i]);
}
}
gl = gl->next;
}
return NULL;
}
const aim_family *aim_get_family( guint16 famnum )
{
GList *gl = families;
while(gl) {
aim_family *fam = gl->data;
if(fam->family == famnum) return fam;
gl = gl->next;
}
return NULL;
}
int aim_get_buddyname( char *name, tvbuff_t *tvb, int len_offset, int name_offset)
{
guint8 buddyname_length;
buddyname_length = tvb_get_guint8(tvb, len_offset);
if(buddyname_length > MAX_BUDDYNAME_LENGTH ) buddyname_length = MAX_BUDDYNAME_LENGTH;
tvb_get_nstringz0(tvb, name_offset, buddyname_length + 1, name);
return buddyname_length;
}
void aim_get_message( guchar *msg, tvbuff_t *tvb, int msg_offset, int msg_length)
{
int i,j,c;
int bracket = FALSE;
int max, tagchars = 0;
int new_offset = msg_offset;
int new_length = msg_length;
/* make sure nothing bigger than 1000 bytes is printed */
if( msg_length > 999 ) return;
memset( msg, '\0', 1000);
i = 0;
c = 0;
/* loop until HTML tag is reached - quick&dirty way to find start of message
* (it is nearly impossible to find the correct start offset for all client versions) */
while( (tagchars < 6) && (new_length > 5) )
{
j = tvb_get_guint8(tvb, new_offset);
if( ( (j == '<') && (tagchars == 0) ) ||
( (j == 'h') && (tagchars == 1) ) ||
( (j == 'H') && (tagchars == 1) ) ||
( (j == 't') && (tagchars == 2) ) ||
( (j == 'T') && (tagchars == 2) ) ||
( (j == 'm') && (tagchars == 3) ) ||
( (j == 'M') && (tagchars == 3) ) ||
( (j == 'l') && (tagchars == 4) ) ||
( (j == 'L') && (tagchars == 4) ) ||
( (j == '>') && (tagchars == 5) ) ) tagchars++;
new_offset++;
new_length--;
}
/* set offset and length of message to after the first HTML tag */
msg_offset = new_offset;
msg_length = new_length;
max = msg_length - 1;
tagchars = 0;
/* find the rest of the message until either a </html> is reached or the end of the frame.
* All other HTML tags are stripped to display only the raw message (printable characters) */
while( (c < max) && (tagchars < 7) )
{
j = tvb_get_guint8(tvb, msg_offset+c);
/* make sure this is an HTML tag by checking the order of the chars */
if( ( (j == '<') && (tagchars == 0) ) ||
( (j == '/') && (tagchars == 1) ) ||
( (j == 'h') && (tagchars == 2) ) ||
( (j == 'H') && (tagchars == 2) ) ||
( (j == 't') && (tagchars == 3) ) ||
( (j == 'T') && (tagchars == 3) ) ||
( (j == 'm') && (tagchars == 4) ) ||
( (j == 'M') && (tagchars == 4) ) ||
( (j == 'l') && (tagchars == 5) ) ||
( (j == 'L') && (tagchars == 5) ) ||
( (j == '>') && (tagchars == 6) ) ) tagchars++;
#ifdef STRIP_TAGS
if( j == '<' ) bracket = TRUE;
if( j == '>' ) bracket = FALSE;
if( (isprint(j) ) && (bracket == FALSE) && (j != '>'))
#else
if( isprint(j) )
#endif
{
msg[i] = j;
i++;
}
c++;
}
}
void aim_init_family(int proto, int ett, guint16 family, const aim_subtype *subtypes)
{
aim_family *fam = g_new(aim_family, 1);
fam->proto = find_protocol_by_id(proto);
fam->name = proto_get_protocol_short_name(fam->proto);
fam->family = family;
fam->subtypes = subtypes;
families = g_list_append(families, fam);
fam->proto_id = proto;
fam->ett = ett;
}
static void dissect_aim_newconn(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree)
{
if (check_col(pinfo->cinfo, COL_INFO))
col_add_fstr(pinfo->cinfo, COL_INFO, "New Connection");
if (tvb_length_remaining(tvb, offset) > 0) {
proto_tree_add_item(tree, hf_aim_authcookie, tvb, offset, 4, FALSE);
offset+=4;
offset = dissect_aim_tlv_sequence(tvb, pinfo, offset, tree, client_tlvs);
}
if (tvb_length_remaining(tvb, offset) > 0)
proto_tree_add_item(tree, hf_aim_data, tvb, offset, -1, FALSE);
}
int dissect_aim_snac_error(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *aim_tree)
{
char *name;
if ((name = match_strval(tvb_get_ntohs(tvb, 0), aim_snac_errors)) != NULL) {
if (check_col(pinfo->cinfo, COL_INFO))
col_add_fstr(pinfo->cinfo, COL_INFO, name);
}
proto_tree_add_item (aim_tree, hf_aim_snac_error,
tvb, 0, 2, FALSE);
return dissect_aim_tlv_sequence(tvb, pinfo, 2, aim_tree, client_tlvs);
}
int dissect_aim_userinfo(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree)
{
offset = dissect_aim_buddyname(tvb, pinfo, offset, tree);
proto_tree_add_item(tree, hf_aim_userinfo_warninglevel, tvb, offset, 2, FALSE);
offset += 2;
return dissect_aim_tlv_list(tvb, pinfo, offset, tree, onlinebuddy_tlvs);
}
int dissect_aim_fnac_flags(tvbuff_t *tvb, int offset, int len, proto_item *ti, guint16 flags)
{
proto_tree *entry = proto_item_add_subtree(ti, ett_aim_fnac_flags);
proto_tree_add_boolean(entry, hf_aim_fnac_flag_next_is_related, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_fnac_flag_contains_version, tvb, offset, len, flags);
return offset + len;
}
static void dissect_aim_snac(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *aim_tree, proto_tree *root_tree)
{
guint16 family_id;
guint16 subtype_id;
guint16 flags;
guint32 id;
proto_item *ti1;
struct aiminfo aiminfo;
proto_tree *aim_tree_fnac = NULL;
tvbuff_t *subtvb;
int orig_offset;
const aim_subtype *subtype;
proto_tree *family_tree = NULL;
const aim_family *family;
orig_offset = offset;
family_id = tvb_get_ntohs(tvb, offset);
family = aim_get_family(family_id);
offset += 2;
subtype_id = tvb_get_ntohs(tvb, offset);
subtype = aim_get_subtype(family_id, subtype_id);
offset += 2;
flags = tvb_get_ntohs(tvb, offset);
offset += 2;
id = tvb_get_ntohl(tvb, offset);
offset += 4;
if( aim_tree )
{
offset = orig_offset;
ti1 = proto_tree_add_text(aim_tree, tvb, 6, 10, "FNAC: Family: 0x%04x, Subtype: %04x", family_id, subtype_id);
aim_tree_fnac = proto_item_add_subtree(ti1, ett_aim_fnac);
proto_tree_add_text (aim_tree_fnac,
tvb, offset, 2, "Family: %s (0x%04x)", family?family->name:"Unknown", family_id);
offset += 2;
proto_tree_add_text (aim_tree_fnac,
tvb, offset, 2, "Subtype: %s (0x%04x)", (subtype && subtype->name)?subtype->name:"Unknown", subtype_id);
offset += 2;
ti1 = proto_tree_add_uint(aim_tree_fnac, hf_aim_fnac_flags, tvb, offset,
2, flags);
offset = dissect_aim_fnac_flags(tvb, offset, 2, ti1, flags);
proto_tree_add_uint(aim_tree_fnac, hf_aim_fnac_id, tvb, offset,
4, id);
offset += 4;
}
if(flags & FNAC_FLAG_CONTAINS_VERSION) {
guint16 len = tvb_get_ntohs(tvb, offset);
int oldoffset;
offset+=2;
oldoffset = offset;
while(offset < oldoffset + len) {
offset = dissect_aim_tlv(tvb, pinfo, offset, aim_tree, fnac_tlvs);
}
}
subtvb = tvb_new_subset(tvb, offset, -1, -1);
aiminfo.tcpinfo = pinfo->private_data;
aiminfo.family = family_id;
aiminfo.subtype = subtype_id;
pinfo->private_data = &aiminfo;
if (check_col(pinfo->cinfo, COL_PROTOCOL) && family) {
col_set_str(pinfo->cinfo, COL_PROTOCOL, family->name);
}
if (check_col(pinfo->cinfo, COL_INFO)) {
if(subtype) {
col_set_str(pinfo->cinfo, COL_INFO, family->name);
col_append_fstr(pinfo->cinfo, COL_INFO, ", %s", subtype->name);
} else {
col_set_str(pinfo->cinfo, COL_INFO, "SNAC data");
if(family) col_append_fstr(pinfo->cinfo, COL_INFO, ", %s", family->name);
else col_append_fstr(pinfo->cinfo, COL_INFO, ", Family: 0x%04x", family_id);
col_append_fstr(pinfo->cinfo, COL_INFO, ", Subtype: 0x%04x", subtype_id);
}
}
if(aim_tree && family)
{
proto_item *ti = proto_tree_add_item(root_tree, family->proto_id, subtvb, 0, -1, FALSE);
family_tree = proto_item_add_subtree(ti, family->ett);
if(subtype) proto_item_append_text(ti, ", %s", subtype->name);
}
if(tvb_length_remaining(tvb, offset) > 0 && subtype && subtype->dissector) {
subtype->dissector(subtvb, pinfo, family_tree);
}
}
static void dissect_aim_flap_err(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree)
{
if (check_col(pinfo->cinfo, COL_INFO)) {
col_add_fstr(pinfo->cinfo, COL_INFO, "FLAP error");
}
/* Show the undissected payload */
if (tvb_length_remaining(tvb, offset) > 0)
proto_tree_add_item(tree, hf_aim_data, tvb, offset, -1, FALSE);
}
static void dissect_aim_keep_alive(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree)
{
if (check_col(pinfo->cinfo, COL_INFO)) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Keep Alive");
}
/* Show the undissected payload */
if (tvb_length_remaining(tvb, offset) > 0)
proto_tree_add_item(tree, hf_aim_data, tvb, offset, -1, FALSE);
}
static void dissect_aim_close_conn(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree)
{
if (check_col(pinfo->cinfo, COL_INFO)) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Close Connection");
}
offset = dissect_aim_tlv_sequence(tvb, pinfo, offset, tree, client_tlvs);
}
static void dissect_aim_unknown_channel(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree)
{
if (check_col(pinfo->cinfo, COL_INFO)) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown Channel");
}
/* Show the undissected payload */
if (tvb_length_remaining(tvb, offset) > 0)
proto_tree_add_item(tree, hf_aim_data, tvb, offset, -1, FALSE);
}
int dissect_aim_buddyname(tvbuff_t *tvb, packet_info *pinfo _U_, int offset,
proto_tree *tree)
{
guint8 buddyname_length = 0;
char *buddyname;
proto_item *ti = NULL;
proto_tree *buddy_tree = NULL;
buddyname_length = tvb_get_guint8(tvb, offset);
offset++;
buddyname = tvb_get_string(tvb, offset, buddyname_length);
if(tree) {
ti = proto_tree_add_text(tree, tvb, offset-1, 1+buddyname_length,
"Buddy: %s",
format_text(buddyname, buddyname_length));
buddy_tree = proto_item_add_subtree(ti, ett_aim_buddyname);
}
proto_tree_add_item(buddy_tree, hf_aim_buddyname_len, tvb, offset-1, 1, FALSE);
proto_tree_add_item(buddy_tree, hf_aim_buddyname, tvb, offset, buddyname_length, FALSE);
return offset+buddyname_length;
}
typedef struct _aim_client_capability
{
const char *name;
e_uuid_t clsid;
} aim_client_capability;
static const aim_client_capability known_client_caps[] = {
{ "Send File",
{0x09461343, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Recv File",
{ 0x09461348, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "iChat",
{0x09460000, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Security",
{0x09460001, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Video Chat",
{0x09460100, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Live Video",
{0x09460101, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Camera",
{0x09460102, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "iChatAV info",
{0x09460105, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x45, 0x53, 0x54, 0x00}}},
{ "Hiptop",
{0x09461323, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Voice Chat",
{0x09461341, 0x4c7f, 0x11d1,
{ 0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Direct ICQ Communication",
{0x09461344, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Direct Instant Messaging",
{0x09461345, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Buddy Icon",
{0x09461346, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Add-Ins",
{0x09461347, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "ICQ Server Relaying",
{0x09461349, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Games",
{0x0946134a, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Games",
{0x0946134a, 0x4c7f, 0x11d1,
{0x22, 0x82, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Send Buddy List",
{0x0946134b, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "AIM/ICQ Interoperability",
{0x0946134d, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "ICQ UTF8 Support",
{0x0946134e, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Old ICQ UTF8 Support",
{0x2e7a6475, 0xfadf, 0x4dc8,
{0x88, 0x6f, 0xea, 0x35, 0x95, 0xfd, 0xb6, 0xdf}}},
{ "Chat",
{0x748f2420, 0x6287, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "ICQ Rich Text Format Messages",
{0x97b12751, 0x243c, 0x4334,
{0xad, 0x22, 0xd6, 0xab, 0xf7, 0x3f, 0x14, 0x92}}},
{ "AP User",
{0xaa4a32b5, 0xf884, 0x48c6,
{0xa3, 0xd7, 0x8c, 0x50, 0x97, 0x19, 0xfd, 0x5b}}},
{ "Trillian Encryption",
{0xf2e7c7f4, 0xfead, 0x4dfb,
{0xb2, 0x35, 0x36, 0x79, 0x8b, 0xdf, 0x00, 0x00}}},
{ "Unknown 1",
{0x0946f004, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Unknown 2",
{0x0946f004, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Unknown 3",
{0x09460103, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ "Unknown 4",
{0x0946f003, 0x4c7f, 0x11d1,
{0x82, 0x22, 0x44, 0x45, 0x53, 0x54, 0x00, 0x00}}},
{ NULL, {0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } } }
};
const aim_client_capability *aim_find_capability ( e_uuid_t clsid)
{
int i;
for(i = 0; known_client_caps[i].name; i++)
{
const aim_client_capability *caps = &(known_client_caps[i]);
if(memcmp(&(caps->clsid), &clsid, sizeof(e_uuid_t)) == 0)
return caps;
}
return NULL;
}
int dissect_aim_tlv_value_capability_data ( proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb _U_, packet_info *pinfo _U_)
{
return 0;
}
int dissect_aim_capability(proto_tree *entry, tvbuff_t *tvb, int offset)
{
const aim_client_capability *caps = NULL;
e_uuid_t clsid;
clsid.Data1 = tvb_get_ntohl(tvb, offset);
clsid.Data2 = tvb_get_ntohs(tvb, offset+4);
clsid.Data3 = tvb_get_ntohs(tvb, offset+6);
tvb_memcpy(tvb, clsid.Data4, offset+8, 8);
caps = aim_find_capability(clsid);
proto_tree_add_text(entry, tvb, offset, 16,
"%s {%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}",
caps?caps->name:"Unknown", clsid.Data1, clsid.Data2,
clsid.Data3, clsid.Data4[0], clsid.Data4[1], clsid.Data4[2],
clsid.Data4[3], clsid.Data4[4], clsid.Data4[5], clsid.Data4[6],
clsid.Data4[7]
);
return offset+16;
}
int dissect_aim_tlv_value_client_capabilities(proto_item *ti _U_, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_)
{
int offset = 0;
proto_tree *entry;
proto_item_set_text(ti, "Client Capabilities List");
entry = proto_item_add_subtree(ti, ett_aim_client_capabilities);
while (tvb_length_remaining(tvb, offset) > 0) {
offset = dissect_aim_capability(entry, tvb, offset);
}
return tvb_length(tvb);
}
int dissect_aim_tlv_value_time(proto_item *ti _U_, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_)
{
/* FIXME */
return tvb_length(tvb);
}
int dissect_aim_userclass(tvbuff_t *tvb, int offset, int len, proto_item *ti, guint32 flags)
{
proto_tree *entry;
entry = proto_item_add_subtree(ti, ett_aim_userclass);
proto_tree_add_boolean(entry, hf_aim_userclass_unconfirmed, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_administrator, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_aol, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_commercial, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_free, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_away, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_icq, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_wireless, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_unknown100, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_unknown200, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_unknown400, tvb, offset, len, flags);
proto_tree_add_boolean(entry, hf_aim_userclass_unknown800, tvb, offset, len, flags);
return offset+len;
}
int dissect_aim_tlv_value_userclass(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_)
{
guint16 value16 = tvb_get_ntohs(tvb, 0);
proto_item_set_text(ti, "Value: 0x%04x", value16);
return dissect_aim_userclass(tvb, 0, 2, ti, value16);
}
static int dissect_aim_tlv_value_userstatus(proto_item *ti _U_, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_)
{
/* FIXME */
return tvb_length(tvb);
}
static int dissect_aim_tlv_value_dcinfo(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_)
{
int offset = 0;
proto_tree *dctree = proto_item_add_subtree(ti, ett_aim_dcinfo);
proto_tree_add_item(dctree, hf_aim_dcinfo_ip , tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(dctree, hf_aim_dcinfo_tcpport, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(dctree, hf_aim_dcinfo_type, tvb, offset, 1, FALSE); offset+=1;
proto_tree_add_item(dctree, hf_aim_dcinfo_proto_version, tvb, offset, 2, FALSE); offset+=2;
proto_tree_add_item(dctree, hf_aim_dcinfo_auth_cookie, tvb, offset, 4, FALSE); offset+=2;
proto_tree_add_item(dctree, hf_aim_dcinfo_webport, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(dctree, hf_aim_dcinfo_client_future, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(dctree, hf_aim_dcinfo_last_info_update, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(dctree, hf_aim_dcinfo_last_ext_info_update, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(dctree, hf_aim_dcinfo_last_ext_status_update, tvb, offset, 4, FALSE); offset+=4;
proto_tree_add_item(dctree, hf_aim_dcinfo_unknown, tvb, offset, 2, FALSE); offset+=2;
return offset;
}
int dissect_aim_tlv_value_string (proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_)
{
guint8 *buf;
gint string_len;
string_len = tvb_length(tvb);
buf = tvb_get_string(tvb, 0, string_len);
proto_item_set_text(ti, "Value: %s", format_text(buf, string_len));
g_free(buf);
return string_len;
}
int dissect_aim_tlv_value_bytes (proto_item *ti _U_, guint16 valueid _U_, tvbuff_t *tvb _U_, packet_info *pinfo _U_)
{
return tvb_length(tvb);
}
int dissect_aim_tlv_value_uint8 (proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_){
guint8 value8 = tvb_get_guint8(tvb, 0);
proto_item_set_text(ti, "Value: %d", value8);
return 1;
}
int dissect_aim_tlv_value_uint16 (proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_){
guint16 value16 = tvb_get_ntohs(tvb, 0);
proto_item_set_text(ti, "Value: %d", value16);
return 2;
}
int dissect_aim_tlv_value_ipv4 (proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_){
/* FIXME: Somewhat more readable format ? */
guint32 value32 = tvb_get_ntoh24(tvb, 0);
proto_item_set_text(ti, "Value: %d", value32);
return 4;
}
int dissect_aim_tlv_value_uint32 (proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_){
guint32 value32 = tvb_get_ntoh24(tvb, 0);
proto_item_set_text(ti, "Value: %d", value32);
return 4;
}
int dissect_aim_tlv_value_messageblock (proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb, packet_info *pinfo _U_){
proto_tree *entry;
guint8 *buf;
guint16 featurelen;
guint16 blocklen;
int offset=0;
/* Setup a new subtree */
entry = proto_item_add_subtree(ti, ett_aim_messageblock);
/* Features descriptor */
proto_tree_add_item(entry, hf_aim_messageblock_featuresdes, tvb, offset, 2,
FALSE);
offset += 2;
/* Features Length */
featurelen = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(entry, hf_aim_messageblock_featureslen, tvb, offset, 2,
FALSE);
offset += 2;
/* Features (should be expanded further @@@@@@@ ) */
proto_tree_add_item(entry, hf_aim_messageblock_features, tvb, offset,
featurelen, FALSE);
offset += featurelen;
/* There can be multiple messages in this message block */
while (tvb_length_remaining(tvb, offset) > 0) {
/* Info field */
proto_tree_add_item(entry, hf_aim_messageblock_info, tvb, offset, 2,
FALSE);
offset += 2;
/* Block length (includes charset and charsubset) */
blocklen = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(entry, hf_aim_messageblock_len, tvb, offset, 2,
FALSE);
offset += 2;
/* Character set */
proto_tree_add_item(entry, hf_aim_messageblock_charset, tvb, offset, 2,
FALSE);
offset += 2;
/* Character subset */
proto_tree_add_item(entry, hf_aim_messageblock_charsubset, tvb, offset, 2,
FALSE);
offset += 2;
/* The actual message */
buf = tvb_get_string(tvb, offset, blocklen - 4 );
proto_item_set_text(ti, "Message: %s",
format_text(buf, blocklen - 4));
proto_tree_add_item(entry, hf_aim_messageblock_message, tvb, offset,
blocklen-4,
FALSE);
offset += tvb_length_remaining(tvb, offset);
g_free(buf);
}
return offset;
}
/* Dissect a TLV value */
int dissect_aim_tlv(tvbuff_t *tvb, packet_info *pinfo _U_,
int offset, proto_tree *tree, const aim_tlv *tlv)
{
guint16 valueid;
guint16 length;
int i = 0;
const aim_tlv *tmp;
proto_item *ti1;
proto_tree *tlv_tree;
int orig_offset;
/* Record the starting offset so we can reuse it at the second pass */
orig_offset = offset;
/* Get the value ID */
valueid = tvb_get_ntohs(tvb, offset);
offset += 2;
/* Figure out which entry applies from the tlv list */
tmp = tlv;
while (tmp[i].valueid) {
if (tmp[i].valueid == valueid) {
/* We found a match */
break;
}
i++;
}
/* At this point, we are either pointing at the correct record, or
we didn't find the record, and are pointing at the last item in the
list */
length = tvb_get_ntohs(tvb, offset);
offset += 2;
offset += length;
if (tree) {
offset = orig_offset;
ti1 = proto_tree_add_text(tree, tvb, offset, length + 4, "TLV: %s", tmp[i].desc);
tlv_tree = proto_item_add_subtree(ti1, ett_aim_tlv);
proto_tree_add_text(tlv_tree, tvb, offset, 2,
"Value ID: %s (0x%04x)", tmp[i].desc, valueid);
offset += 2;
proto_tree_add_text(tlv_tree, tvb, offset, 2,
"Length: %d", length);
offset += 2;
ti1 = proto_tree_add_text(tlv_tree, tvb, offset, length,
"Value");
if (tmp[i].dissector) {
tmp[i].dissector(ti1, valueid, tvb_new_subset(tvb, offset, length, length), pinfo);
}
offset += length;
}
/* Return the new length */
return offset;
}
int dissect_aim_tlv_sequence(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree, const aim_tlv *tlv_table)
{
while (tvb_length_remaining(tvb, offset) > 0) {
offset = dissect_aim_tlv(tvb, pinfo, offset, tree, tlv_table);
}
return offset;
}
int dissect_aim_tlv_list(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree, const aim_tlv *tlv_table)
{
guint16 i, tlv_count = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(tree, hf_aim_tlvcount, tvb, offset, 2, FALSE);
offset += 2;
for(i = 0; i < tlv_count; i++) {
offset = dissect_aim_tlv(tvb, pinfo, offset, tree, tlv_table);
}
return offset;
}
/* Register the protocol with Ethereal */
void
proto_register_aim(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_aim_cmd_start,
{ "Command Start", "aim.cmd_start", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_channel,
{ "Channel ID", "aim.channel", FT_UINT8, BASE_HEX, VALS(aim_flap_channels), 0x0, "", HFILL }
},
{ &hf_aim_seqno,
{ "Sequence Number", "aim.seqno", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }
},
{ &hf_aim_authcookie,
{ "Authentication Cookie", "aim.authcookie", FT_BYTES, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_data_len,
{ "Data Field Length", "aim.datalen", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }
},
{ &hf_aim_data,
{ "Data", "aim.data", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_signon_challenge_len,
{ "Signon challenge length", "aim.signon.challengelen", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }
},
{ &hf_aim_signon_challenge,
{ "Signon challenge", "aim.signon.challenge", FT_STRING, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_family,
{ "FNAC Family ID", "aim.fnac.family", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype,
{ "FNAC Subtype ID", "aim.fnac.subtype", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_flags,
{ "FNAC Flags", "aim.fnac.flags", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_id,
{ "FNAC ID", "aim.fnac.id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_infotype,
{ "Infotype", "aim.infotype", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_buddyname_len,
{ "Buddyname len", "aim.buddynamelen", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }
},
{ &hf_aim_buddyname,
{ "Buddy Name", "aim.buddyname", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
},
{ &hf_aim_tlvcount,
{ "TLV Count", "aim.tlvcount", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_snac_error,
{ "SNAC Error", "aim.snac.error", FT_UINT16,
BASE_HEX, VALS(aim_snac_errors), 0x0, "", HFILL },
},
{ &hf_aim_userclass_unconfirmed,
{ "AOL Unconfirmed user flag", "aim.userclass.unconfirmed", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_UNCONFIRMED, "", HFILL },
},
{ &hf_aim_userclass_administrator,
{ "AOL Administrator flag", "aim.userclass.administrator", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_ADMINISTRATOR, "", HFILL },
},
{ &hf_aim_userclass_aol,
{ "AOL Staff User Flag", "aim.userclass.staff", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_AOL, "", HFILL },
},
{ &hf_aim_userclass_commercial,
{ "AOL commercial account flag", "aim.userclass.commercial", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_COMMERCIAL, "", HFILL },
},
{ &hf_aim_userclass_free,
{ "ICQ non-commercial account flag", "aim.userclass.noncommercial", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_FREE, "", HFILL },
},
{ &hf_aim_userclass_away,
{ "AOL away status flag", "aim.userclass.away", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_AWAY, "", HFILL },
},
{ &hf_aim_userclass_icq,
{ "ICQ user sign", "aim.userclass.icq", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_ICQ, "", HFILL },
},
{ &hf_aim_userclass_wireless,
{ "AOL wireless user", "aim.userclass.wireless", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_WIRELESS, "", HFILL },
},
{ &hf_aim_userclass_unknown100,
{ "Unknown bit", "aim.userclass.unknown100", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_UNKNOWN100, "", HFILL },
},
{ &hf_aim_userclass_unknown200,
{ "Unknown bit", "aim.userclass.unknown200", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_UNKNOWN200, "", HFILL },
},
{ &hf_aim_userclass_unknown400,
{ "Unknown bit", "aim.userclass.unknown400", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_UNKNOWN400, "", HFILL },
},
{ &hf_aim_userclass_unknown800,
{ "Unknown bit", "aim.userclass.unknown800", FT_BOOLEAN, 32, TFS(&flags_set_truth), CLASS_UNKNOWN800, "", HFILL },
},
{ &hf_aim_fnac_flag_next_is_related,
{ "Followed By SNAC with related information", "aim.fnac.flags.next_is_related", FT_BOOLEAN, 16, TFS(&flags_set_truth), FNAC_FLAG_NEXT_IS_RELATED, "", HFILL },
},
{ &hf_aim_fnac_flag_contains_version,
{ "Contains Version of Family this SNAC is in", "aim.fnac.flags.contains_version", FT_BOOLEAN, 16, TFS(&flags_set_truth), FNAC_FLAG_CONTAINS_VERSION, "", HFILL },
},
{ &hf_aim_userinfo_warninglevel,
{ "Warning Level", "aim.userinfo.warninglevel", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_messageblock_featuresdes,
{ "Features", "aim.messageblock.featuresdes", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL },
},
{ &hf_aim_messageblock_featureslen,
{ "Features Length", "aim.messageblock.featureslen", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_messageblock_features,
{ "Features", "aim.messageblock.features", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL },
},
{ &hf_aim_messageblock_info,
{ "Block info", "aim.messageblock.info", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL },
},
{ &hf_aim_messageblock_len,
{ "Block length", "aim.messageblock.length", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_messageblock_charset,
{ "Block Character set", "aim.messageblock.charset", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL },
},
{ &hf_aim_messageblock_charsubset,
{ "Block Character subset", "aim.messageblock.charsubset", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL },
},
{ &hf_aim_messageblock_message,
{ "Message", "aim.messageblock.message", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_ip,
{ "Internal IP address", "aim.dcinfo.addr", FT_IPv4, BASE_NONE, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_tcpport,
{ "TCP Port", "aim.dcinfo.tcpport", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_type,
{ "Type", "aim.dcinfo.type", FT_UINT8, BASE_HEX, VALS(dc_types), 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_proto_version,
{ "Protocol Version", "aim.dcinfo.proto_version", FT_UINT16, BASE_DEC, VALS(protocol_versions), 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_auth_cookie,
{ "Authorization Cookie", "aim.dcinfo.auth_cookie", FT_BYTES, BASE_NONE, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_webport,
{ "Web Front Port", "aim.dcinfo.webport", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_client_future,
{ "Client Futures", "aim.dcinfo.client_futures", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_last_info_update,
{ "Last Info Update", "aim.dcinfo.last_info_update", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_last_ext_info_update,
{ "Last Extended Info Update", "aim.dcinfo.last_ext_info_update", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_last_ext_status_update,
{ "Last Extended Status Update", "aim.dcinfo.last_ext_status_update", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL },
},
{ &hf_aim_dcinfo_unknown,
{ "Unknown", "aim.dcinfo.unknown", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL },
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_aim,
&ett_aim_dcinfo,
&ett_aim_fnac,
&ett_aim_fnac_flags,
&ett_aim_tlv,
&ett_aim_buddyname,
&ett_aim_userclass,
&ett_aim_messageblock,
&ett_aim_client_capabilities
};
module_t *aim_module;
/* Register the protocol name and description */
proto_aim = proto_register_protocol("AOL Instant Messenger", "AIM", "aim");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_aim, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
aim_module = prefs_register_protocol(proto_aim, NULL);
prefs_register_bool_preference(aim_module, "desegment",
"Reassemble AIM messages spanning multiple TCP segments",
"Whether the AIM dissector should reassemble messages spanning multiple TCP segments."
" To use this option, you must also enable \"Allow subdissectors to reassemble TCP streams\" in the TCP protocol settings.",
&aim_desegment);
subdissector_table = register_dissector_table("aim.family",
"Family ID", FT_UINT16, BASE_HEX);
}
void
proto_reg_handoff_aim(void)
{
dissector_handle_t aim_handle;
aim_handle = new_create_dissector_handle(dissect_aim, proto_aim);
dissector_add("tcp.port", TCP_PORT_AIM, aim_handle);
}
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