2001-11-27 09:27:29 +00:00
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/* packet-dcerpc-ndr.c
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* Routines for DCERPC NDR dissection
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* Copyright 2001, Todd Sabin <tas@webspan.net>
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*
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2004-07-18 00:24:25 +00:00
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* $Id$
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2001-11-27 09:27:29 +00:00
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*
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2006-05-21 04:49:01 +00:00
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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2001-11-27 09:27:29 +00:00
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* Copyright 1998 Gerald Combs
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2002-08-28 21:04:11 +00:00
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*
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2001-11-27 09:27:29 +00:00
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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2002-08-28 21:04:11 +00:00
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*
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2001-11-27 09:27:29 +00:00
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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2002-08-28 21:04:11 +00:00
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*
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2001-11-27 09:27:29 +00:00
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <ctype.h>
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#include <glib.h>
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2002-01-21 07:37:49 +00:00
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#include <epan/packet.h>
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2007-02-25 11:48:06 +00:00
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#include <epan/emem.h>
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2001-11-27 09:27:29 +00:00
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#include "packet-dcerpc.h"
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/*
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* The NDR routines are for use by dcerpc subdissetors. They're
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* primarily for making sure things are aligned properly according
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* to the rules of NDR.
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*/
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int
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dissect_ndr_uint8 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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2004-01-19 20:10:37 +00:00
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proto_tree *tree, guint8 *drep,
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2001-11-27 09:27:29 +00:00
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int hfindex, guint8 *pdata)
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{
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2002-01-29 09:13:28 +00:00
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dcerpc_info *di;
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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return offset;
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}
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2001-11-27 09:27:29 +00:00
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/* no alignment needed */
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2002-08-28 21:04:11 +00:00
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return dissect_dcerpc_uint8 (tvb, offset, pinfo,
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2001-11-27 09:27:29 +00:00
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tree, drep, hfindex, pdata);
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}
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2007-02-25 01:34:41 +00:00
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int
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PIDL_dissect_uint8 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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proto_tree *tree, guint8 *drep,
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int hfindex, guint32 param _U_)
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{
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dcerpc_info *di;
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2007-02-25 11:48:06 +00:00
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guint8 val;
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2007-02-25 01:34:41 +00:00
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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return offset;
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}
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/* no alignment needed */
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2007-02-25 11:48:06 +00:00
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offset=dissect_dcerpc_uint8 (tvb, offset, pinfo,
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tree, drep, hfindex, &val);
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if(param&PIDL_SET_COL_INFO){
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header_field_info *hf_info;
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char *valstr;
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hf_info=proto_registrar_get_nth(hfindex);
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valstr=ep_alloc(64);
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valstr[0]=0;
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switch(hf_info->display){
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case BASE_DEC:
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if(hf_info->strings){
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g_snprintf(valstr, 64, "%s(%d)",val_to_str(val, hf_info->strings, "Unknown:%u"), val);
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} else {
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g_snprintf(valstr, 64, "%d", val);
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}
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break;
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case BASE_HEX:
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if(hf_info->strings){
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g_snprintf(valstr, 64, "%s(0x%02x)",val_to_str(val, hf_info->strings, "Unknown:%u"), val);
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} else {
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g_snprintf(valstr, 64, "0x%02x", val);
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}
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break;
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default:
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REPORT_DISSECTOR_BUG("Invalid hf->display value");
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}
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_append_fstr(pinfo->cinfo, COL_INFO," %s:%s", hf_info->name, valstr);
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}
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}
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return offset;
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2007-02-25 01:34:41 +00:00
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}
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2001-11-27 09:27:29 +00:00
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int
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dissect_ndr_uint16 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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2004-01-19 20:10:37 +00:00
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proto_tree *tree, guint8 *drep,
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2001-11-27 09:27:29 +00:00
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int hfindex, guint16 *pdata)
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{
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2002-01-29 09:13:28 +00:00
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dcerpc_info *di;
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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return offset;
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}
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2001-11-27 09:27:29 +00:00
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if (offset % 2) {
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offset++;
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}
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2002-08-28 21:04:11 +00:00
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return dissect_dcerpc_uint16 (tvb, offset, pinfo,
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2001-11-27 09:27:29 +00:00
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tree, drep, hfindex, pdata);
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}
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2007-02-25 01:34:41 +00:00
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int
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PIDL_dissect_uint16 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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proto_tree *tree, guint8 *drep,
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int hfindex, guint32 param _U_)
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{
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dcerpc_info *di;
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2007-02-25 11:48:06 +00:00
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guint16 val;
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2007-02-25 01:34:41 +00:00
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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return offset;
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}
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if (offset % 2) {
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offset++;
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}
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2007-02-25 11:48:06 +00:00
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offset=dissect_dcerpc_uint16 (tvb, offset, pinfo,
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tree, drep, hfindex, &val);
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if(param&PIDL_SET_COL_INFO){
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header_field_info *hf_info;
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char *valstr;
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hf_info=proto_registrar_get_nth(hfindex);
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valstr=ep_alloc(64);
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valstr[0]=0;
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switch(hf_info->display){
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case BASE_DEC:
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if(hf_info->strings){
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g_snprintf(valstr, 64, "%s(%d)",val_to_str(val, hf_info->strings, "Unknown:%u"), val);
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} else {
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g_snprintf(valstr, 64, "%d", val);
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}
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break;
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case BASE_HEX:
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if(hf_info->strings){
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g_snprintf(valstr, 64, "%s(0x%04x)",val_to_str(val, hf_info->strings, "Unknown:%u"), val);
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} else {
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g_snprintf(valstr, 64, "0x%04x", val);
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}
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break;
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default:
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REPORT_DISSECTOR_BUG("Invalid hf->display value");
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}
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_append_fstr(pinfo->cinfo, COL_INFO," %s:%s", hf_info->name, valstr);
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}
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}
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return offset;
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2007-02-25 01:34:41 +00:00
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}
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2001-11-27 09:27:29 +00:00
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int
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dissect_ndr_uint32 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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2004-01-19 20:10:37 +00:00
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proto_tree *tree, guint8 *drep,
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2001-11-27 09:27:29 +00:00
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int hfindex, guint32 *pdata)
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{
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2002-01-29 09:13:28 +00:00
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dcerpc_info *di;
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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return offset;
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}
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2001-11-27 09:27:29 +00:00
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if (offset % 4) {
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offset += 4 - (offset % 4);
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}
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2002-08-28 21:04:11 +00:00
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return dissect_dcerpc_uint32 (tvb, offset, pinfo,
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2001-11-27 09:27:29 +00:00
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tree, drep, hfindex, pdata);
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}
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2007-02-25 01:34:41 +00:00
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int
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PIDL_dissect_uint32 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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proto_tree *tree, guint8 *drep,
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2007-02-25 11:48:06 +00:00
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int hfindex, guint32 param)
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2007-02-25 01:34:41 +00:00
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{
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dcerpc_info *di;
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2007-02-25 11:48:06 +00:00
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guint32 val;
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2007-02-25 01:34:41 +00:00
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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return offset;
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}
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if (offset % 4) {
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offset += 4 - (offset % 4);
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}
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2007-02-25 11:48:06 +00:00
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offset=dissect_dcerpc_uint32 (tvb, offset, pinfo,
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tree, drep, hfindex, &val);
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if(param&PIDL_SET_COL_INFO){
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header_field_info *hf_info;
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char *valstr;
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hf_info=proto_registrar_get_nth(hfindex);
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valstr=ep_alloc(64);
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valstr[0]=0;
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switch(hf_info->display){
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case BASE_DEC:
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if(hf_info->strings){
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g_snprintf(valstr, 64, "%s(%d)",val_to_str(val, hf_info->strings, "Unknown:%u"), val);
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} else {
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g_snprintf(valstr, 64, "%d", val);
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}
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break;
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case BASE_HEX:
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if(hf_info->strings){
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g_snprintf(valstr, 64, "%s(0x%08x)",val_to_str(val, hf_info->strings, "Unknown:%u"), val);
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} else {
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g_snprintf(valstr, 64, "0x%08x", val);
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}
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break;
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default:
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REPORT_DISSECTOR_BUG("Invalid hf->display value");
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}
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_append_fstr(pinfo->cinfo, COL_INFO," %s:%s", hf_info->name, valstr);
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}
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}
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return offset;
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2007-02-25 01:34:41 +00:00
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}
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2005-01-28 09:29:49 +00:00
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/* Double uint32
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This function dissects the 64bit datatype that is common for
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ms interfaces and which is 32bit aligned.
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It is really just 2 uint32's
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*/
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2002-01-29 09:13:28 +00:00
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int
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2005-01-28 09:29:49 +00:00
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dissect_ndr_duint32 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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2004-01-19 20:10:37 +00:00
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proto_tree *tree, guint8 *drep,
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2005-01-29 20:39:14 +00:00
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int hfindex, guint64 *pdata)
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2002-01-29 09:13:28 +00:00
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{
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dcerpc_info *di;
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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return offset;
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}
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if (offset % 4) {
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offset += 4 - (offset % 4);
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}
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2002-08-28 21:04:11 +00:00
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return dissect_dcerpc_uint64 (tvb, offset, pinfo,
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2002-01-29 09:13:28 +00:00
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tree, drep, hfindex, pdata);
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}
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2005-01-28 09:37:47 +00:00
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/* uint64 : hyper
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a 64 bit integer aligned to proper 8 byte boundaries
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*/
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int
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dissect_ndr_uint64 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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proto_tree *tree, guint8 *drep,
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int hfindex, guint64 *pdata)
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{
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dcerpc_info *di;
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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return offset;
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}
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if (offset % 8) {
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offset += 8 - (offset % 8);
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}
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return dissect_dcerpc_uint64 (tvb, offset, pinfo,
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tree, drep, hfindex, pdata);
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}
|
2002-09-03 08:39:16 +00:00
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|
2007-02-25 01:34:41 +00:00
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int
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PIDL_dissect_uint64 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
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proto_tree *tree, guint8 *drep,
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|
int hfindex, guint32 param _U_)
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|
{
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dcerpc_info *di;
|
2007-02-25 11:48:06 +00:00
|
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|
guint64 val;
|
2007-02-25 01:34:41 +00:00
|
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di=pinfo->private_data;
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if(di->conformant_run){
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/* just a run to handle conformant arrays, no scalars to dissect */
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|
return offset;
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}
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|
|
if (offset % 8) {
|
|
|
|
offset += 8 - (offset % 8);
|
|
|
|
}
|
2007-02-25 11:48:06 +00:00
|
|
|
offset=dissect_dcerpc_uint64 (tvb, offset, pinfo,
|
|
|
|
tree, drep, hfindex, &val);
|
|
|
|
|
|
|
|
if(param&PIDL_SET_COL_INFO){
|
|
|
|
header_field_info *hf_info;
|
|
|
|
char *valstr;
|
|
|
|
|
|
|
|
hf_info=proto_registrar_get_nth(hfindex);
|
|
|
|
|
|
|
|
valstr=ep_alloc(64);
|
|
|
|
valstr[0]=0;
|
|
|
|
|
|
|
|
switch(hf_info->display){
|
|
|
|
case BASE_DEC:
|
|
|
|
if(hf_info->strings){
|
2007-05-29 18:52:42 +00:00
|
|
|
g_snprintf(valstr, 64, "%s(%" G_GINT64_MODIFIER "u)",val_to_str( (guint32) val, hf_info->strings, "Unknown:%u"), val);
|
2007-02-25 11:48:06 +00:00
|
|
|
} else {
|
2007-05-29 18:52:42 +00:00
|
|
|
g_snprintf(valstr, 64, "%" G_GINT64_MODIFIER "u", val);
|
2007-02-25 11:48:06 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
case BASE_HEX:
|
|
|
|
if(hf_info->strings){
|
2007-05-29 18:52:42 +00:00
|
|
|
g_snprintf(valstr, 64, "%s(0x%" G_GINT64_MODIFIER "x)",val_to_str( (guint32) val, hf_info->strings, "Unknown:%u"), val);
|
2007-02-25 11:48:06 +00:00
|
|
|
} else {
|
2007-05-29 18:52:42 +00:00
|
|
|
g_snprintf(valstr, 64, "0x%" G_GINT64_MODIFIER "x", val);
|
2007-02-25 11:48:06 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
REPORT_DISSECTOR_BUG("Invalid hf->display value");
|
|
|
|
}
|
|
|
|
|
|
|
|
if (check_col(pinfo->cinfo, COL_INFO)) {
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO," %s:%s", hf_info->name, valstr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return offset;
|
2007-02-25 01:34:41 +00:00
|
|
|
}
|
|
|
|
|
2002-09-03 08:39:16 +00:00
|
|
|
int
|
|
|
|
dissect_ndr_float(tvbuff_t *tvb, gint offset, packet_info *pinfo,
|
2004-01-19 20:10:37 +00:00
|
|
|
proto_tree *tree, guint8 *drep,
|
2002-09-03 08:39:16 +00:00
|
|
|
int hfindex, gfloat *pdata)
|
|
|
|
{
|
|
|
|
dcerpc_info *di;
|
|
|
|
|
|
|
|
|
|
|
|
di=pinfo->private_data;
|
|
|
|
if(di->conformant_run){
|
|
|
|
/* just a run to handle conformant arrays, no scalars to dissect */
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (offset % 4) {
|
|
|
|
offset += 4 - (offset % 4);
|
|
|
|
}
|
|
|
|
return dissect_dcerpc_float(tvb, offset, pinfo,
|
|
|
|
tree, drep, hfindex, pdata);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
int
|
|
|
|
dissect_ndr_double(tvbuff_t *tvb, gint offset, packet_info *pinfo,
|
2004-01-19 20:10:37 +00:00
|
|
|
proto_tree *tree, guint8 *drep,
|
2002-09-03 08:39:16 +00:00
|
|
|
int hfindex, gdouble *pdata)
|
|
|
|
{
|
|
|
|
dcerpc_info *di;
|
|
|
|
|
|
|
|
|
|
|
|
di=pinfo->private_data;
|
|
|
|
if(di->conformant_run){
|
|
|
|
/* just a run to handle conformant arrays, no scalars to dissect */
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (offset % 8) {
|
|
|
|
offset += 8 - (offset % 8);
|
|
|
|
}
|
|
|
|
return dissect_dcerpc_double(tvb, offset, pinfo,
|
|
|
|
tree, drep, hfindex, pdata);
|
|
|
|
}
|
|
|
|
|
2002-09-26 06:13:08 +00:00
|
|
|
/* handles unix 32 bit time_t */
|
|
|
|
int
|
|
|
|
dissect_ndr_time_t (tvbuff_t *tvb, gint offset, packet_info *pinfo,
|
2004-01-19 20:10:37 +00:00
|
|
|
proto_tree *tree, guint8 *drep,
|
2002-09-26 06:13:08 +00:00
|
|
|
int hfindex, guint32 *pdata)
|
|
|
|
{
|
|
|
|
dcerpc_info *di;
|
|
|
|
|
|
|
|
di=pinfo->private_data;
|
|
|
|
if(di->conformant_run){
|
|
|
|
/* just a run to handle conformant arrays, no scalars to dissect */
|
|
|
|
return offset;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (offset % 4) {
|
|
|
|
offset += 4 - (offset % 4);
|
|
|
|
}
|
|
|
|
return dissect_dcerpc_time_t (tvb, offset, pinfo,
|
|
|
|
tree, drep, hfindex, pdata);
|
|
|
|
}
|
2002-09-03 08:39:16 +00:00
|
|
|
|
2001-11-27 09:27:29 +00:00
|
|
|
int
|
|
|
|
dissect_ndr_uuid_t (tvbuff_t *tvb, gint offset, packet_info *pinfo,
|
2004-01-19 20:10:37 +00:00
|
|
|
proto_tree *tree, guint8 *drep,
|
2001-11-27 09:27:29 +00:00
|
|
|
int hfindex, e_uuid_t *pdata)
|
|
|
|
{
|
2002-01-29 09:13:28 +00:00
|
|
|
dcerpc_info *di;
|
|
|
|
|
|
|
|
di=pinfo->private_data;
|
|
|
|
if(di->conformant_run){
|
|
|
|
/* just a run to handle conformant arrays, no scalars to dissect */
|
|
|
|
return offset;
|
|
|
|
}
|
2001-11-27 09:27:29 +00:00
|
|
|
|
|
|
|
/* uuid's are aligned to 4 bytes, due to initial uint32 in struct */
|
|
|
|
if (offset % 4) {
|
|
|
|
offset += 4 - (offset % 4);
|
|
|
|
}
|
2005-01-12 21:20:50 +00:00
|
|
|
return dissect_dcerpc_uuid_t (tvb, offset, pinfo,
|
|
|
|
tree, drep, hfindex, pdata);
|
2001-11-27 09:27:29 +00:00
|
|
|
}
|
|
|
|
|
2003-11-21 02:48:11 +00:00
|
|
|
/*
|
|
|
|
* XXX - at least according to the DCE RPC 1.1 "nbase.idl", an
|
|
|
|
* "ndr_context_handle" is an unsigned32 "context_handle_attributes"
|
|
|
|
* and a uuid_t "context_handle_uuid". The attributes do not appear to
|
|
|
|
* be used, and always appear to be set to 0, in the DCE RPC 1.1 code.
|
|
|
|
*
|
|
|
|
* Should we display an "ndr_context_handle" with a tree holding the
|
|
|
|
* attributes and the uuid_t?
|
|
|
|
*/
|
2001-12-06 23:30:36 +00:00
|
|
|
int
|
|
|
|
dissect_ndr_ctx_hnd (tvbuff_t *tvb, gint offset, packet_info *pinfo,
|
2004-01-19 20:10:37 +00:00
|
|
|
proto_tree *tree, guint8 *drep,
|
2001-12-06 23:30:36 +00:00
|
|
|
int hfindex, e_ctx_hnd *pdata)
|
|
|
|
{
|
2002-05-27 09:50:58 +00:00
|
|
|
static e_ctx_hnd ctx_hnd;
|
2002-01-29 09:13:28 +00:00
|
|
|
dcerpc_info *di;
|
|
|
|
|
|
|
|
di=pinfo->private_data;
|
|
|
|
if(di->conformant_run){
|
|
|
|
/* just a run to handle conformant arrays, no scalars to dissect */
|
|
|
|
return offset;
|
|
|
|
}
|
2001-12-06 23:30:36 +00:00
|
|
|
|
|
|
|
if (offset % 4) {
|
|
|
|
offset += 4 - (offset % 4);
|
|
|
|
}
|
2003-11-21 02:48:11 +00:00
|
|
|
ctx_hnd.attributes = dcerpc_tvb_get_ntohl (tvb, offset, drep);
|
2001-12-06 23:30:36 +00:00
|
|
|
dcerpc_tvb_get_uuid (tvb, offset+4, drep, &ctx_hnd.uuid);
|
|
|
|
if (tree) {
|
2003-11-21 02:48:11 +00:00
|
|
|
/* Bytes is bytes - don't worry about the data representation */
|
|
|
|
proto_tree_add_item (tree, hfindex, tvb, offset, 20, FALSE);
|
2001-12-06 23:30:36 +00:00
|
|
|
}
|
|
|
|
if (pdata) {
|
|
|
|
*pdata = ctx_hnd;
|
|
|
|
}
|
|
|
|
return offset + 20;
|
|
|
|
}
|