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wireshark/packet-aim-signon.c

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/* packet-aim-signon.c
* Routines for AIM Instant Messenger (OSCAR) dissection, SNAC Signon
* Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
* Copyright 2000, Ralf Hoelzer <ralf@well.com>
*
* $Id: packet-aim-signon.c,v 1.4 2004/06/16 07:51:21 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <glib.h>
#include <epan/packet.h>
#include <epan/strutil.h>
#include "packet-aim.h"
#define FAMILY_SIGNON 0x0017
/* Family Signon */
#define FAMILY_SIGNON_ERROR 0x0001
#define FAMILY_SIGNON_LOGON 0x0002
#define FAMILY_SIGNON_LOGON_REPLY 0x0003
#define FAMILY_SIGNON_UIN_REQ 0x0004
#define FAMILY_SIGNON_UIN_REPL 0x0005
#define FAMILY_SIGNON_SIGNON 0x0006
#define FAMILY_SIGNON_SIGNON_REPLY 0x0007
#define FAMILY_SIGNON_S_SECUREID_REQ 0x000a
#define FAMILY_SIGNON_C_SECUREID_REP 0x000b
static const value_string aim_fnac_family_signon[] = {
{ FAMILY_SIGNON_LOGON, "Logon" },
{ FAMILY_SIGNON_LOGON_REPLY, "Logon Reply" },
{ FAMILY_SIGNON_UIN_REQ, "Request UIN" },
{ FAMILY_SIGNON_UIN_REPL, "New UIN response" },
{ FAMILY_SIGNON_SIGNON, "Sign-on" },
{ FAMILY_SIGNON_SIGNON_REPLY, "Sign-on Reply" },
{ FAMILY_SIGNON_S_SECUREID_REQ, "Server SecureID Request" },
{ FAMILY_SIGNON_C_SECUREID_REP, "Client SecureID Reply" },
{ 0, NULL }
};
static int dissect_aim_snac_signon(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree);
static int dissect_aim_snac_signon_logon(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *tree);
static int dissect_aim_snac_signon_logon_reply(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *tree);
static int dissect_aim_snac_signon_signon(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *tree);
static int dissect_aim_snac_signon_signon_reply(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *tree);
/* Initialize the protocol and registered fields */
static int proto_aim_signon = -1;
static int hf_aim_infotype = -1;
static int hf_aim_signon_challenge_len = -1;
static int hf_aim_signon_challenge = -1;
/* Initialize the subtree pointers */
static gint ett_aim_signon = -1;
static int dissect_aim_snac_signon(tvbuff_t *tvb, packet_info *pinfo,
proto_tree *tree)
{
struct aiminfo *aiminfo = pinfo->private_data;
int offset = 0;
proto_item *ti = NULL;
proto_tree *signon_tree = NULL;
if(tree) {
ti = proto_tree_add_text(tree, tvb, 0, -1,"AIM Signon");
signon_tree = proto_item_add_subtree(ti, ett_aim_signon);
}
switch(aiminfo->subtype)
{
case FAMILY_SIGNON_ERROR:
return dissect_aim_snac_error(tvb, pinfo, offset, signon_tree);
case FAMILY_SIGNON_LOGON:
return dissect_aim_snac_signon_logon(tvb, pinfo, offset, signon_tree);
case FAMILY_SIGNON_LOGON_REPLY:
return dissect_aim_snac_signon_logon_reply(tvb, pinfo, offset, signon_tree);
case FAMILY_SIGNON_SIGNON:
return dissect_aim_snac_signon_signon(tvb, pinfo, offset, signon_tree);
case FAMILY_SIGNON_SIGNON_REPLY:
return dissect_aim_snac_signon_signon_reply(tvb, pinfo, offset, signon_tree);
case FAMILY_SIGNON_S_SECUREID_REQ:
/* No data */
return 0;
case FAMILY_SIGNON_UIN_REQ:
case FAMILY_SIGNON_UIN_REPL:
case FAMILY_SIGNON_C_SECUREID_REP:
/*FIXME*/
default:
return 0;
}
}
static int dissect_aim_snac_signon_logon(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree)
{
while (tvb_length_remaining(tvb, offset) > 0) {
offset = dissect_aim_tlv(tvb, pinfo, offset, tree, client_tlvs);
}
return offset;
}
static int dissect_aim_snac_signon_logon_reply(tvbuff_t *tvb,
packet_info *pinfo,
int offset, proto_tree *tree)
{
if (check_col(pinfo->cinfo, COL_INFO))
col_append_fstr(pinfo->cinfo, COL_INFO, ", Login information reply");
while (tvb_length_remaining(tvb, offset) > 0) {
offset = dissect_aim_tlv(tvb, pinfo, offset, tree, client_tlvs);
}
return offset;
}
static int dissect_aim_snac_signon_signon(tvbuff_t *tvb, packet_info *pinfo,
int offset, proto_tree *tree)
{
guint8 buddyname_length = 0;
char buddyname[MAX_BUDDYNAME_LENGTH + 1];
/* Info Type */
proto_tree_add_item(tree, hf_aim_infotype, tvb, offset, 2, FALSE);
offset += 2;
/* Unknown */
offset += 1;
/* Buddy Name */
buddyname_length = aim_get_buddyname( buddyname, tvb, offset, offset + 1 );
if (check_col(pinfo->cinfo, COL_INFO)) {
col_append_fstr(pinfo->cinfo, COL_INFO, " Username: %s",
format_text(buddyname, buddyname_length));
}
if(tree) {
proto_tree_add_text(tree, tvb, offset + 1, buddyname_length,
"Screen Name: %s",
format_text(buddyname, buddyname_length));
}
offset += buddyname_length + 1;
return offset;
}
static int dissect_aim_snac_signon_signon_reply(tvbuff_t *tvb,
packet_info *pinfo,
int offset, proto_tree *tree)
{
guint16 challenge_length = 0;
if (check_col(pinfo->cinfo, COL_INFO))
col_append_fstr(pinfo->cinfo, COL_INFO, ", Sign-on reply");
/* Logon Challenge Length */
challenge_length = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(tree, hf_aim_signon_challenge_len, tvb, offset, 2, FALSE);
offset += 2;
/* Challenge */
proto_tree_add_item(tree, hf_aim_signon_challenge, tvb, offset, challenge_length, FALSE);
offset += challenge_length;
return offset;
}
/* Register the protocol with Ethereal */
void
proto_register_aim_signon(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_aim_infotype,
{ "Infotype", "aim.infotype", FT_UINT16, 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 }
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_aim_signon,
};
/* Register the protocol name and description */
proto_aim_signon = proto_register_protocol("AIM Signon", "AIM Signon", "aim_signon");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_aim_signon, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_aim_signon(void)
{
dissector_handle_t aim_handle;
aim_handle = new_create_dissector_handle(dissect_aim_snac_signon, proto_aim_signon);
dissector_add("aim.family", FAMILY_SIGNON, aim_handle);
aim_init_family(FAMILY_SIGNON, "Signon", aim_fnac_family_signon);
}
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