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packet-dcom-remact.c

/* packet-dcom-remact.c
 * Routines for DCOM Remote Activation
 * Copyright 2001, Todd Sabin <tas@webspan.net>
 *
 * $Id: packet-dcom-remact.c 18935 2006-08-16 23:13:26Z ulfl $
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * 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.
 */

/* see packet-dcom.c for details about DCOM */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif


#include <string.h>

#include <glib.h>
#include <epan/packet.h>
#include "packet-dcerpc.h"
#include "packet-dcom.h"

static int hf_remact_opnum = -1;

static int hf_remact_requested_protseqs = -1;
static int hf_remact_protseqs = -1;
static int hf_remact_interfaces = -1;
static int hf_remact_mode = -1;
static int hf_remact_client_impl_level = -1;
static int hf_remact_object_name = -1;
static int hf_remact_object_storage = -1;
static int hf_remact_interface_data = -1;

static int hf_remact_oxid_bindings = -1;
static int hf_remact_authn_hint = -1;


static int proto_remact = -1;
static gint ett_remact = -1;
static e_uuid_t uuid_remact = { 0x4d9f4ab8, 0x7d1c, 0x11cf, { 0x86, 0x1e, 0x00, 0x20, 0xaf, 0x6e, 0x7c, 0x57 } };
static guint16  ver_remact = 0;


static int
dissect_remact_remote_activation_rqst(tvbuff_t *tvb, int offset,
      packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
      guint32 u32ClientImpLevel;
      guint32 u32Mode;
      guint32 u32Interfaces;
      guint32 u32Pointer;
      guint32 u32ArraySize;
      guint32 u32ItemIdx;
      guint16 u16ProtSeqs;
    e_uuid_t clsid;
    e_uuid_t iid;

      gchar       szObjName[1000] = { 0 };
      guint32 u32ObjNameLen = sizeof(szObjName);

    offset = dissect_dcom_this(tvb, offset, pinfo, tree, drep);

      offset = dissect_dcom_append_UUID(tvb, offset, pinfo, tree, drep,
            hf_dcom_clsid, -1, &clsid);
      
      offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep, 
                                    &u32Pointer);
      if (u32Pointer) {
            offset = dissect_dcom_BSTR(tvb, offset, pinfo, tree, drep, 
                                    hf_remact_object_name, szObjName, u32ObjNameLen);
      }

      offset = dissect_dcom_PMInterfacePointer(tvb, offset, pinfo, tree, drep, 
                                    hf_remact_object_storage, NULL /* XXX */);

      offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep, 
                                    hf_remact_client_impl_level, &u32ClientImpLevel);
      offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep, 
                                    hf_remact_mode, &u32Mode);

      /* Interfaces */
      offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep, 
                                    hf_remact_interfaces, &u32Interfaces);
      offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep, 
                                    &u32Pointer);
      if (u32Pointer) {
            offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep, 
                                          &u32ArraySize);
            u32ItemIdx = 1;
            while (u32Interfaces--) {
                  offset = dissect_dcom_append_UUID(tvb, offset, pinfo, tree, drep,
                        hf_dcom_iid, u32ItemIdx, &iid);

                  u32ItemIdx++;
            }
      }

      offset = dissect_dcom_WORD(tvb, offset, pinfo, tree, drep, 
                        hf_remact_requested_protseqs, &u16ProtSeqs);

      offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep, 
                                    &u32ArraySize);
      u32ItemIdx = 1;
      while (u32ArraySize--) {
            offset = dissect_dcom_WORD(tvb, offset, pinfo, tree, drep, 
                                          hf_remact_protseqs, &u16ProtSeqs);
            u32ItemIdx++;
      }

      return offset;
}


static int
dissect_remact_remote_activation_resp(tvbuff_t *tvb, int offset,
      packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
      guint32     u32Pointer;
      e_uuid_t ipid;
      guint32     u32AuthnHint;
      guint16     u16VersionMajor;
      guint16     u16VersionMinor;
      guint32     u32HResult;
      guint32 u32ArraySize;
      guint32 u32Idx;
      guint32     u32VariableOffset;


    offset = dissect_dcom_that(tvb, offset, pinfo, tree, drep);

      offset = dissect_dcom_ID(tvb, offset, pinfo, tree, drep, 
                                    hf_dcom_oxid, NULL);
      offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep, 
                                    &u32Pointer);
      if (u32Pointer) {
            offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep, 
                                          &u32ArraySize);
            offset = dissect_dcom_DUALSTRINGARRAY(tvb, offset, pinfo, tree, drep, 
                                          hf_remact_oxid_bindings, NULL);
      }

      offset = dissect_dcom_UUID(tvb, offset, pinfo, tree, drep, 
                        hf_dcom_ipid, &ipid);
      offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep, 
                                    hf_remact_authn_hint, &u32AuthnHint);
      offset = dissect_dcom_COMVERSION(tvb, offset, pinfo, tree, drep,
                        &u16VersionMajor, &u16VersionMinor);

      offset = dissect_dcom_HRESULT(tvb, offset, pinfo, tree, drep,
                        &u32HResult);

      offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep, 
                                    &u32ArraySize);
      u32VariableOffset = offset + u32ArraySize * 4;
      while (u32ArraySize--) {
            offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep, 
                                          &u32Pointer);
            if (u32Pointer) {
                  u32VariableOffset = dissect_dcom_MInterfacePointer(tvb, u32VariableOffset, pinfo, tree, drep,
                                    hf_remact_interface_data, NULL /* XXX */);
            }
      }
      offset = u32VariableOffset;

      offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep, 
                                    &u32ArraySize);
      u32Idx = 1;
      while (u32ArraySize--) {
            offset = dissect_dcom_indexed_HRESULT(tvb, offset, pinfo, tree, drep,
                              &u32HResult, u32Idx);
            /* update column info now */
            if (check_col(pinfo->cinfo, COL_INFO)) {
              col_append_fstr(pinfo->cinfo, COL_INFO, " %s[%u]", 
                    val_to_str(u32HResult, dcom_hresult_vals, "Unknown (0x%08x)"),
                    u32Idx);
            }
            u32Idx++;
      }

      offset = dissect_dcom_HRESULT(tvb, offset, pinfo, tree, drep,
                        &u32HResult);

      /* update column info now */
    if (check_col(pinfo->cinfo, COL_INFO)) {
      col_append_fstr(pinfo->cinfo, COL_INFO, " -> %s", 
              val_to_str(u32HResult, dcom_hresult_vals, "Unknown (0x%08x)"));
      }

      return offset;
}


static dcerpc_sub_dissector remact_dissectors[] = {
    { 0, "RemoteActivation", dissect_remact_remote_activation_rqst, dissect_remact_remote_activation_resp },
    { 0, NULL, NULL, NULL },
};


void
proto_register_remact (void)
{
      static hf_register_info hf_remact[] = {
        { &hf_remact_opnum,
          { "Operation", "remact_opnum", FT_UINT16, BASE_DEC, NULL, 0x0, "Operation", HFILL }},

            { &hf_remact_requested_protseqs,
            { "RequestedProtSeqs", "remact_req_prot_seqs", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
            { &hf_remact_protseqs,
            { "ProtSeqs", "remact_prot_seqs", FT_UINT16, BASE_DEC, VALS(dcom_protseq_vals), 0x0, "", HFILL }},
            { &hf_remact_interfaces,
            { "Interfaces", "remact_interfaces", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
            { &hf_remact_mode,
            { "Mode", "remact_mode", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
            { &hf_remact_client_impl_level,
            { "ClientImplLevel", "remact_client_impl_level", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
            { &hf_remact_object_name,
            { "ObjectName", "remact_object_name", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
            { &hf_remact_object_storage,
            { "ObjectStorage", "remact_object_storage", FT_NONE, BASE_HEX, NULL, 0x0, "", HFILL }},
            { &hf_remact_interface_data,
            { "InterfaceData", "remact_interface_data", FT_NONE, BASE_NONE, NULL, 0x0, "", HFILL }},

            { &hf_remact_oxid_bindings,
            { "OxidBindings", "hf_remact_oxid_bindings", FT_NONE, BASE_DEC, NULL, 0x0, "", HFILL }},
            { &hf_remact_authn_hint,
            { "AuthnHint", "remact_authn_hint", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
      };

      static gint *ett[] = {
            &ett_remact
      };
      
      proto_remact = proto_register_protocol ("DCOM IRemoteActivation", "REMACT", "remact");
      proto_register_field_array (proto_remact, hf_remact, array_length (hf_remact));
      proto_register_subtree_array (ett, array_length (ett));
}

void
proto_reg_handoff_remact (void)
{
      /* Register the protocol as dcerpc */
      dcerpc_init_uuid (proto_remact, ett_remact, &uuid_remact, ver_remact, remact_dissectors, hf_remact_opnum);
}

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