forked from osmocom/wireshark
1165 lines
42 KiB
C
1165 lines
42 KiB
C
/* 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 "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_GENERIC_SERVICE_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 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
|
|
|
|
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_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_GENERIC_SERVICE_ID, "Service (Family) ID", dissect_aim_tlv_value_uint16 },
|
|
{ AIM_CLIENT_TLV_CHANGE_PASSWORD_URL, "Change password url", dissect_aim_tlv_value_string },
|
|
{ 0, "Unknown", NULL },
|
|
};
|
|
|
|
|
|
static int dissect_aim_tlv_value_userstatus(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb);
|
|
static int dissect_aim_tlv_value_dcinfo(proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb);
|
|
|
|
#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
|
|
|
|
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_bytes },
|
|
{ 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 },
|
|
{ 0, "Unknown", NULL }
|
|
};
|
|
|
|
struct aim_family {
|
|
guint16 family;
|
|
const char *name;
|
|
const value_string *subtypes;
|
|
};
|
|
|
|
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 FAMILY_GENERIC_REDIRECT_SERVER_ADDRESS 0x0005
|
|
#define FAMILY_GENERIC_REDIRECT_AUTH_COOKIE 0x0006
|
|
#define FAMILY_GENERIC_REDIRECT_FAMILY_ID 0x000D
|
|
|
|
static const aim_tlv aim_fnac_family_generic_redirect_tlv[] = {
|
|
{ FAMILY_GENERIC_REDIRECT_SERVER_ADDRESS, "Server address and (optional) port", dissect_aim_tlv_value_string },
|
|
{ FAMILY_GENERIC_REDIRECT_AUTH_COOKIE, "Authorization cookie", dissect_aim_tlv_value_string },
|
|
{ FAMILY_GENERIC_REDIRECT_FAMILY_ID, "Family ID", dissect_aim_tlv_value_uint16 },
|
|
{ 0, "Unknown", NULL }
|
|
};
|
|
|
|
#define FAMILY_GENERIC_MOTD_MOTDTYPE_MDT_UPGRADE 0x0001
|
|
#define FAMILY_GENERIC_MOTD_MOTDTYPE_ADV_UPGRADE 0x0002
|
|
#define FAMILY_GENERIC_MOTD_MOTDTYPE_SYS_BULLETIN 0x0003
|
|
#define FAMILY_GENERIC_MOTD_MOTDTYPE_NORMAL 0x0004
|
|
#define FAMILY_GENERIC_MOTD_MOTDTYPE_NEWS 0x0006
|
|
|
|
static const value_string aim_snac_generic_motd_motdtypes[] = {
|
|
{ FAMILY_GENERIC_MOTD_MOTDTYPE_MDT_UPGRADE, "Mandatory Upgrade Needed Notice" },
|
|
{ FAMILY_GENERIC_MOTD_MOTDTYPE_ADV_UPGRADE, "Advisable Upgrade Notice" },
|
|
{ FAMILY_GENERIC_MOTD_MOTDTYPE_SYS_BULLETIN, "AIM/ICQ Service System Announcements" },
|
|
{ FAMILY_GENERIC_MOTD_MOTDTYPE_NORMAL, "Standard Notice" },
|
|
{ FAMILY_GENERIC_MOTD_MOTDTYPE_NEWS, "News from AOL service" },
|
|
{ 0, 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
|
|
|
|
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_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;
|
|
|
|
|
|
/* Initialize the subtree pointers */
|
|
static gint ett_aim = -1;
|
|
static gint ett_aim_buddyname= -1;
|
|
static gint ett_aim_fnac = -1;
|
|
static gint ett_aim_tlv = -1;
|
|
static gint ett_aim_userclass = -1;
|
|
static gint ett_aim_messageblock = -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 char *aim_get_subtypename( guint16 famnum, guint16 subtype )
|
|
{
|
|
GList *gl = families;
|
|
while(gl) {
|
|
struct aim_family *fam = gl->data;
|
|
if(fam->family == famnum) return match_strval(subtype, fam->subtypes);
|
|
gl = gl->next;
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
const char *aim_get_familyname( guint16 famnum )
|
|
{
|
|
GList *gl = families;
|
|
while(gl) {
|
|
struct aim_family *fam = gl->data;
|
|
if(fam->family == famnum) return fam->name;
|
|
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(guint16 family, const char *name, const value_string *subtypes)
|
|
{
|
|
struct aim_family *fam = g_new(struct aim_family, 1);
|
|
fam->name = g_strdup(name);
|
|
fam->family = family;
|
|
fam->subtypes = subtypes;
|
|
families = g_list_append(families, fam);
|
|
}
|
|
|
|
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;
|
|
while(tvb_reported_length_remaining(tvb, offset) > 0) {
|
|
offset = dissect_aim_tlv(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,
|
|
int offset, proto_tree *aim_tree)
|
|
{
|
|
char *name;
|
|
if ((name = match_strval(tvb_get_ntohs(tvb, offset), 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, offset, 2, FALSE);
|
|
return tvb_length_remaining(tvb, 2);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
static void dissect_aim_snac(tvbuff_t *tvb, packet_info *pinfo,
|
|
int offset, proto_tree *aim_tree, proto_tree *root_tree)
|
|
{
|
|
guint16 family;
|
|
guint16 subtype;
|
|
guint16 flags;
|
|
guint32 id;
|
|
proto_item *ti1;
|
|
struct aiminfo aiminfo;
|
|
const char *fam_name, *subtype_name;
|
|
proto_tree *aim_tree_fnac = NULL;
|
|
tvbuff_t *subtvb;
|
|
int orig_offset;
|
|
|
|
orig_offset = offset;
|
|
family = tvb_get_ntohs(tvb, offset);
|
|
fam_name = aim_get_familyname(family);
|
|
offset += 2;
|
|
subtype = tvb_get_ntohs(tvb, offset);
|
|
subtype_name = aim_get_subtypename(family, subtype);
|
|
offset += 2;
|
|
flags = tvb_get_ntohs(tvb, offset);
|
|
offset += 2;
|
|
id = tvb_get_ntohl(tvb, offset);
|
|
offset += 4;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "SNAC data");
|
|
}
|
|
|
|
if( aim_tree )
|
|
{
|
|
offset = orig_offset;
|
|
ti1 = proto_tree_add_text(aim_tree, tvb, 6, 10, "FNAC");
|
|
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)", fam_name?fam_name:"Unknown", family);
|
|
offset += 2;
|
|
|
|
proto_tree_add_text (aim_tree_fnac,
|
|
tvb, offset, 2, "Subtype: %s (0x%04x)", subtype_name?subtype_name:"Unknown", subtype);
|
|
offset += 2;
|
|
|
|
proto_tree_add_uint(aim_tree_fnac, hf_aim_fnac_flags, tvb, offset,
|
|
2, flags);
|
|
offset += 2;
|
|
proto_tree_add_uint(aim_tree_fnac, hf_aim_fnac_id, tvb, offset,
|
|
4, id);
|
|
offset += 4;
|
|
}
|
|
|
|
subtvb = tvb_new_subset(tvb, offset, -1, -1);
|
|
aiminfo.tcpinfo = pinfo->private_data;
|
|
aiminfo.family = family;
|
|
aiminfo.subtype = subtype;
|
|
pinfo->private_data = &aiminfo;
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
if(fam_name) col_append_fstr(pinfo->cinfo, COL_INFO, ", %s", fam_name);
|
|
else col_append_fstr(pinfo->cinfo, COL_INFO, ", Family: 0x%04x", family);
|
|
if(subtype_name) col_append_fstr(pinfo->cinfo, COL_INFO, ", %s", subtype_name);
|
|
else col_append_fstr(pinfo->cinfo, COL_INFO, ", Subtype: 0x%04x", subtype);
|
|
}
|
|
|
|
if(tvb_length_remaining(tvb, offset) == 0 || !dissector_try_port(subdissector_table, family, subtvb, pinfo, root_tree)) {
|
|
/* Show the undissected payload */
|
|
if (tvb_length_remaining(tvb, offset) > 0)
|
|
proto_tree_add_item(aim_tree, hf_aim_data, tvb, offset, -1, FALSE);
|
|
}
|
|
}
|
|
|
|
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");
|
|
}
|
|
|
|
while(tvb_reported_length_remaining(tvb, offset) > 0) {
|
|
offset = dissect_aim_tlv(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;
|
|
}
|
|
|
|
|
|
int dissect_aim_tlv_value_client_capabilities(proto_item *ti _U_, guint16 valueid _U_, tvbuff_t *tvb)
|
|
{
|
|
/* FIXME */
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
int dissect_aim_tlv_value_time(proto_item *ti _U_, guint16 valueid _U_, tvbuff_t *tvb)
|
|
{
|
|
/* 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)
|
|
{
|
|
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)
|
|
{
|
|
/* FIXME */
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
static int dissect_aim_tlv_value_dcinfo(proto_item *ti _U_, guint16 valueid _U_, tvbuff_t *tvb)
|
|
{
|
|
/* FIXME */
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
int dissect_aim_tlv_value_string (proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb)
|
|
{
|
|
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_)
|
|
{
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
int dissect_aim_tlv_value_uint8 (proto_item *ti, guint16 valueid _U_, tvbuff_t *tvb){
|
|
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){
|
|
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){
|
|
/* 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){
|
|
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){
|
|
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));
|
|
}
|
|
|
|
offset += length;
|
|
}
|
|
|
|
/* Return the new length */
|
|
return offset;
|
|
}
|
|
|
|
int dissect_aim_tlv_list(tvbuff_t *tvb, packet_info *pinfo _U_,
|
|
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_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 },
|
|
},
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_aim,
|
|
&ett_aim_fnac,
|
|
&ett_aim_tlv,
|
|
&ett_aim_buddyname,
|
|
&ett_aim_userclass,
|
|
&ett_aim_messageblock
|
|
};
|
|
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",
|
|
"Desegment all AIM messages spanning multiple TCP segments",
|
|
"Whether the AIM dissector should desegment all messages spanning multiple TCP segments",
|
|
&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);
|
|
}
|