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/* packet-dcerpc-mapi.c
* Routines for MS Exchange MAPI
* Copyright 2002, Ronnie Sahlberg
*
* $Id: packet-dcerpc-mapi.c,v 1.2 2002/05/23 12:23:29 sahlberg 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 <glib.h>
#include <epan/packet.h>
#include "packet-dcerpc.h"
#include "packet-dcerpc-nt.h"
#include "packet-dcerpc-mapi.h"
#include "smb.h" /* for "NT_errors[]" */
static int proto_dcerpc_mapi = -1;
static int hf_mapi_unknown_string = -1;
static int hf_mapi_unknown_data = -1;
static int hf_mapi_unknown_short = -1;
static int hf_mapi_hnd = -1;
static int hf_mapi_rc = -1;
static int hf_mapi_encap_datalen = -1;
static gint ett_dcerpc_mapi = -1;
static e_uuid_t uuid_dcerpc_mapi = {
0xa4f1db00, 0xca47, 0x1067,
{ 0xb3, 0x1f, 0x00, 0xdd, 0x01, 0x06, 0x62, 0xda }
};
static guint16 ver_dcerpc_mapi = 0;
#define DISSECT_UNKNOWN(len) \
{\
proto_tree_add_text(tree, tvb, offset, len,\
"unknown data (%d byte%s)", len,\
plurality(len, "", "s"));\
offset += len;\
}
static int
mapi_logon_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, char *drep)
{
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
dissect_ndr_nt_STRING_string, NDR_POINTER_REF,
"", hf_mapi_unknown_string, -1);
DISSECT_UNKNOWN(tvb_length_remaining(tvb, offset));
return offset;
}
/* The strings in this function are decoded properly on seen captures.
There might be offsets/padding mismatched due to potential pointer expansions
or padding bytes. Captures where this code breaks will tell us about that */
static int
mapi_logon_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, char *drep)
{
offset = dissect_nt_policy_hnd(tvb, offset, pinfo, tree, drep,
hf_mapi_hnd, NULL, FALSE, FALSE);
DISSECT_UNKNOWN(20); /* this is 20 bytes, unless there are pointers */
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
dissect_ndr_nt_STRING_string, NDR_POINTER_REF,
"", hf_mapi_unknown_string, -1);
DISSECT_UNKNOWN(6); /* possibly 1 or 2 bytes padding here */
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
dissect_ndr_nt_STRING_string, NDR_POINTER_REF,
"", hf_mapi_unknown_string, -1);
DISSECT_UNKNOWN( tvb_length_remaining(tvb, offset)-4 );
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_mapi_rc, NULL);
return offset;
}
static int
mapi_unknown_02_request(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, char *drep)
{
offset = dissect_nt_policy_hnd(tvb, offset, pinfo, tree, drep,
hf_mapi_hnd, NULL, FALSE, FALSE);
/* this is a unidimensional varying and conformant array of
encrypted data */
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
dissect_ndr_nt_STRING_string, NDR_POINTER_REF,
"", hf_mapi_unknown_data, -1);
/* length of encrypted data. */
offset = dissect_ndr_uint16 (tvb, offset, pinfo, tree, drep,
hf_mapi_encap_datalen, NULL);
offset = dissect_ndr_uint16 (tvb, offset, pinfo, tree, drep,
hf_mapi_unknown_short, NULL);
return offset;
}
static int
mapi_unknown_02_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, char *drep)
{
offset = dissect_nt_policy_hnd(tvb, offset, pinfo, tree, drep,
hf_mapi_hnd, NULL, FALSE, FALSE);
/* this is a unidimensional varying and conformant array of
encrypted data */
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
dissect_ndr_nt_STRING_string, NDR_POINTER_REF,
"", hf_mapi_unknown_data, -1);
/* length of encrypted data */
offset = dissect_ndr_uint16 (tvb, offset, pinfo, tree, drep,
hf_mapi_encap_datalen, NULL);
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_mapi_rc, NULL);
return offset;
}
static dcerpc_sub_dissector dcerpc_mapi_dissectors[] = {
{ MAPI_LOGON, "Logon",
mapi_logon_rqst,
mapi_logon_reply },
{ MAPI_LOGOFF, "Logoff", NULL, NULL },
{ MAPI_UNKNOWN_02, "unknown_02",
mapi_unknown_02_request,
mapi_unknown_02_reply },
{0, NULL, NULL, NULL },
};
void
proto_register_dcerpc_mapi(void)
{
static hf_register_info hf[] = {
{ &hf_mapi_hnd,
{ "Context Handle", "mapi.hnd", FT_BYTES, BASE_NONE,
NULL, 0x0, "", HFILL }},
{ &hf_mapi_rc,
{ "Return code", "mapi.rc", FT_UINT32, BASE_HEX,
VALS (NT_errors), 0x0, "", HFILL }},
{ &hf_mapi_unknown_string,
{ "Unknown string", "mapi.unknown_string", FT_STRING, BASE_NONE,
NULL, 0, "Unknown string. If you know what this is, contact ethereal developers.", HFILL }},
{ &hf_mapi_unknown_short,
{ "Unknown short", "mapi.unknown_short", FT_UINT16, BASE_HEX,
NULL, 0, "Unknown short. If you know what this is, contact ethereal developers.", HFILL }},
{ &hf_mapi_unknown_data,
{ "unknown encrypted data", "mapi.unknown_data", FT_BYTES, BASE_HEX,
NULL, 0, "Unknown data. If you know what this is, contact ethereal developers.", HFILL }},
{ &hf_mapi_encap_datalen,
{ "Length", "mapi.encap_len", FT_UINT16, BASE_DEC,
NULL, 0x0, "Length of encapsulated/encrypted data", HFILL }},
};
static gint *ett[] = {
&ett_dcerpc_mapi,
};
proto_dcerpc_mapi = proto_register_protocol(
"Microsoft Exchange MAPI", "MAPI", "mapi");
proto_register_field_array(proto_dcerpc_mapi, hf,
array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_dcerpc_mapi(void)
{
/* Register protocol as dcerpc */
dcerpc_init_uuid(proto_dcerpc_mapi, ett_dcerpc_mapi,
&uuid_dcerpc_mapi, ver_dcerpc_mapi,
dcerpc_mapi_dissectors);
}
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