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wireshark/packet-aim-ssi.c

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/* packet-aim-ssi.c
* Routines for AIM Instant Messenger (OSCAR) dissection, SNAC SSI
* Copyright 2004, Jelmer Vernooij <jelmer@samba.org>
* Copyright 2000, Ralf Hoelzer <ralf@well.com>
*
* $Id: packet-aim-ssi.c,v 1.3 2004/04/26 18:21:10 obiot 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_SSI 0x0013
/* Family Server-Stored Buddy Lists */
#define FAMILY_SSI_ERROR 0x0001
#define FAMILY_SSI_REQRIGHTS 0x0002
#define FAMILY_SSI_RIGHTSINFO 0x0003
#define FAMILY_SSI_REQLIST_FIRSTTIME 0x0004
#define FAMILY_SSI_REQLIST 0x0005
#define FAMILY_SSI_LIST 0x0006
#define FAMILY_SSI_ACTIVATE 0x0007
#define FAMILY_SSI_ADD 0x0008
#define FAMILY_SSI_MOD 0x0009
#define FAMILY_SSI_DEL 0x000a
#define FAMILY_SSI_SRVACK 0x000e
#define FAMILY_SSI_NOLIST 0x000f
#define FAMILY_SSI_EDITSTART 0x0011
#define FAMILY_SSI_EDITSTOP 0x0012
#define FAMILY_SSI_GRANT_FUTURE_AUTH 0x0014
#define FAMILY_SSI_FUTUR_AUTH_GRANTED 0x0015
#define FAMILY_SSI_SEND_AUTH_REQ 0x0018
#define FAMILY_SSI_AUTH_REQ 0x0019
#define FAMILY_SSI_SEND_AUTH_REPLY 0x001a
#define FAMILY_SSI_AUTH_REPLY 0x001b
#define FAMILY_SSI_WAS_ADDED 0x001c
static const value_string aim_fnac_family_ssi[] = {
{ FAMILY_SSI_ERROR, "Error" },
{ FAMILY_SSI_REQRIGHTS, "Request Rights" },
{ FAMILY_SSI_RIGHTSINFO, "Rights Info" },
{ FAMILY_SSI_REQLIST_FIRSTTIME, "Request List (first time)" },
{ FAMILY_SSI_REQLIST, "Request List" },
{ FAMILY_SSI_LIST, "List" },
{ FAMILY_SSI_ACTIVATE, "Activate" },
{ FAMILY_SSI_ADD, "Add Buddy" },
{ FAMILY_SSI_MOD, "Modify Buddy" },
{ FAMILY_SSI_DEL, "Delete Buddy" },
{ FAMILY_SSI_SRVACK, "Server Ack" },
{ FAMILY_SSI_NOLIST, "No List" },
{ FAMILY_SSI_EDITSTART, "Edit Start" },
{ FAMILY_SSI_EDITSTOP, "Edit Stop" },
{ FAMILY_SSI_GRANT_FUTURE_AUTH, "Grant Future Authorization to Client" },
{ FAMILY_SSI_FUTUR_AUTH_GRANTED, "Future Authorization Granted" },
{ FAMILY_SSI_SEND_AUTH_REQ, "Send Authentication Request" },
{ FAMILY_SSI_AUTH_REQ, "Authentication Request" },
{ FAMILY_SSI_SEND_AUTH_REPLY, "Send Authentication Reply" },
{ FAMILY_SSI_AUTH_REPLY, "Authentication Reply" },
{ FAMILY_SSI_WAS_ADDED, "Remote User Added Client To List" },
{ 0, NULL }
};
#define FAMILY_SSI_TYPE_BUDDY 0x0000
#define FAMILY_SSI_TYPE_GROUP 0x0001
#define FAMILY_SSI_TYPE_PERMIT 0x0002
#define FAMILY_SSI_TYPE_DENY 0x0003
#define FAMILY_SSI_TYPE_PDINFO 0x0004
#define FAMILY_SSI_TYPE_PRESENCEPREFS 0x0005
#define FAMILY_SSI_TYPE_ICONINFO 0x0014
static const value_string aim_fnac_family_ssi_types[] = {
{ FAMILY_SSI_TYPE_BUDDY, "Buddy" },
{ FAMILY_SSI_TYPE_GROUP, "Group" },
{ FAMILY_SSI_TYPE_PERMIT, "Permit" },
{ FAMILY_SSI_TYPE_DENY, "Deny" },
{ FAMILY_SSI_TYPE_PDINFO, "PDINFO" },
{ FAMILY_SSI_TYPE_PRESENCEPREFS, "Presence Preferences" },
{ FAMILY_SSI_TYPE_ICONINFO, "Icon Info" },
{ 0, NULL }
};
static const aim_tlv ssi_rights_tlvs[] = {
{ 0, NULL, NULL }
};
static int dissect_aim_snac_ssi_list(tvbuff_t *tvb, packet_info *pinfo _U_,
int offset, proto_tree *tree, guint16 subtype _U_);
/* Initialize the protocol and registered fields */
static int proto_aim_ssi = -1;
static int hf_aim_fnac_subtype_ssi_version = -1;
static int hf_aim_fnac_subtype_ssi_numitems = -1;
static int hf_aim_fnac_subtype_ssi_last_change_time = -1;
static int hf_aim_fnac_subtype_ssi_buddyname_len = -1;
static int hf_aim_fnac_subtype_ssi_buddyname = -1;
static int hf_aim_fnac_subtype_ssi_gid = -1;
static int hf_aim_fnac_subtype_ssi_bid = -1;
static int hf_aim_fnac_subtype_ssi_type = -1;
static int hf_aim_fnac_subtype_ssi_tlvlen = -1;
static int hf_aim_fnac_subtype_ssi_data = -1;
/* Initialize the subtree pointers */
static gint ett_aim_ssi = -1;
static gint ett_ssi = -1;
static int dissect_ssi_item(tvbuff_t *tvb, packet_info *pinfo _U_,
int offset, proto_tree *ssi_entry,
guint16 subtype _U_)
{
guint16 buddyname_length = 0;
int endoffset;
guint16 tlv_len = 0;
/* Buddy Name Length */
buddyname_length = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_buddyname_len,
tvb, offset, 2, FALSE);
offset += 2;
/* Buddy Name */
if (buddyname_length > 0) {
proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_buddyname, tvb,
offset, buddyname_length, FALSE);
offset += buddyname_length;
}
/* Buddy group ID */
proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_gid, tvb, offset,
2, FALSE);
offset += 2;
/* Buddy ID */
proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_bid, tvb, offset,
2, FALSE);
offset += 2;
/* Buddy Type */
proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_type, tvb, offset,
2, FALSE);
offset += 2;
/* Size of the following TLV in bytes (as opposed to the number of
TLV objects in the chain) */
tlv_len = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(ssi_entry, hf_aim_fnac_subtype_ssi_tlvlen, tvb,
offset, 2, FALSE);
offset += 2;
endoffset = offset;
/* For now, we just dump the TLV contents as-is, since there is not a
TLV dissection utility that works based on total chain length */
while(endoffset < offset+tlv_len) {
endoffset = dissect_aim_tlv(tvb, pinfo, endoffset, ssi_entry, client_tlvs);
}
return endoffset;
}
static int dissect_aim_snac_ssi(tvbuff_t *tvb, packet_info *pinfo _U_,
proto_tree *tree)
{
struct aiminfo *aiminfo = pinfo->private_data;
int offset = 0;
proto_item *ti = NULL;
proto_tree *ssi_tree = NULL;
if(tree) {
ti = proto_tree_add_text(tree, tvb, 0, -1,"AIM Server Side Information Service");
ssi_tree = proto_item_add_subtree(ti, ett_ssi);
}
switch(aiminfo->subtype)
{
case FAMILY_SSI_ERROR:
return dissect_aim_snac_error(tvb, pinfo, offset, ssi_tree);
case FAMILY_SSI_LIST:
return dissect_aim_snac_ssi_list(tvb, pinfo, offset, ssi_tree, aiminfo->subtype);
case FAMILY_SSI_RIGHTSINFO:
while(tvb_length_remaining(tvb, offset) > 0) {
offset = dissect_aim_tlv(tvb, pinfo, offset, ssi_tree, ssi_rights_tlvs);
}
return offset;
case FAMILY_SSI_REQRIGHTS:
case FAMILY_SSI_ACTIVATE:
case FAMILY_SSI_EDITSTART:
case FAMILY_SSI_EDITSTOP:
case FAMILY_SSI_REQLIST_FIRSTTIME:
/* No data */
return 0;
case FAMILY_SSI_ADD:
case FAMILY_SSI_MOD:
case FAMILY_SSI_DEL:
return dissect_ssi_item(tvb, pinfo, offset, ssi_tree, aiminfo->subtype);
case FAMILY_SSI_WAS_ADDED:
return dissect_aim_buddyname(tvb, pinfo, offset, ssi_tree);
case FAMILY_SSI_REQLIST:
case FAMILY_SSI_SRVACK:
case FAMILY_SSI_NOLIST:
case FAMILY_SSI_GRANT_FUTURE_AUTH:
case FAMILY_SSI_FUTUR_AUTH_GRANTED:
case FAMILY_SSI_SEND_AUTH_REQ:
case FAMILY_SSI_AUTH_REQ:
case FAMILY_SSI_SEND_AUTH_REPLY:
case FAMILY_SSI_AUTH_REPLY:
/* FIXME */
return 0;
default:
return 0;
}
}
static int dissect_aim_snac_ssi_list(tvbuff_t *tvb, packet_info *pinfo _U_,
int offset, proto_tree *tree,
guint16 subtype)
{
proto_item *ti;
proto_tree *ssi_entry = NULL;
guint16 num_items, i;
/* SSI Version */
proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_version, tvb, offset, 1,
FALSE);
offset += 1;
/* Number of items */
proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_numitems, tvb, offset, 2,
FALSE);
num_items = tvb_get_ntohs(tvb, offset);
offset += 2;
for(i = 0; i < num_items; i++) {
ti = proto_tree_add_text(tree, tvb, offset, tvb_get_ntohs(tvb, offset+10)+10, "SSI Entry");
ssi_entry = proto_item_add_subtree(ti, ett_aim_ssi);
offset = dissect_ssi_item(tvb, pinfo, offset, ssi_entry, subtype);
}
proto_tree_add_item(tree, hf_aim_fnac_subtype_ssi_last_change_time, tvb, offset, 4, FALSE);
return offset;
}
/* Register the protocol with Ethereal */
void
proto_register_aim_ssi(void)
{
/* Setup list of header fields */
static hf_register_info hf[] = {
{ &hf_aim_fnac_subtype_ssi_version,
{ "SSI Version", "aim.fnac.ssi.version", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_numitems,
{ "SSI Object count", "aim.fnac.ssi.numitems", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_last_change_time,
{ "SSI Last Change Time", "aim.fnac.ssi.last_change_time", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_buddyname_len,
{ "SSI Buddy Name length", "aim.fnac.ssi.buddyname_len", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_buddyname,
{ "Buddy Name", "aim.fnac.ssi.buddyname", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_gid,
{ "SSI Buddy Group ID", "aim.fnac.ssi.gid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_bid,
{ "SSI Buddy ID", "aim.fnac.ssi.bid", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_type,
{ "SSI Buddy type", "aim.fnac.ssi.type", FT_UINT16, BASE_HEX, VALS(aim_fnac_family_ssi_types), 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_tlvlen,
{ "SSI TLV Len", "aim.fnac.ssi.tlvlen", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
{ &hf_aim_fnac_subtype_ssi_data,
{ "SSI Buddy Data", "aim.fnac.ssi.data", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_aim_ssi,
&ett_ssi,
};
/* Register the protocol name and description */
proto_aim_ssi = proto_register_protocol("AIM Server Side Info", "AIM SSI", "aim_ssi");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array(proto_aim_ssi, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_aim_ssi(void)
{
dissector_handle_t aim_handle;
aim_handle = new_create_dissector_handle(dissect_aim_snac_ssi, proto_aim_ssi);
dissector_add("aim.family", FAMILY_SSI, aim_handle);
aim_init_family(FAMILY_SSI, "SSI", aim_fnac_family_ssi);
}
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