443 lines
14 KiB
C
443 lines
14 KiB
C
/* packet-dcom-dispatch.c
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* Routines for DCOM IDispatch
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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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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*
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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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*
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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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/* see packet-dcom.c for details about DCOM */
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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 <glib.h>
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#include <epan/packet.h>
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#include "packet-dcerpc.h"
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#include "packet-dcom.h"
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static int hf_dispatch_opnum = -1;
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static int hf_dispatch_riid = -1;
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static int hf_dispatch_name = -1;
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static int hf_dispatch_names = -1;
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static int hf_dispatch_lcid = -1;
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static int hf_dispatch_id = -1;
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static int hf_dispatch_flags2 = -1;
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static int hf_dispatch_arg = -1;
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static int hf_dispatch_args = -1;
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static int hf_dispatch_named_args = -1;
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static int hf_dispatch_varref = -1;
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static int hf_dispatch_varrefidx = -1;
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static int hf_dispatch_varrefarg = -1;
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static int hf_dispatch_varresult = -1;
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static gint ett_dispatch_flags = -1;
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static int hf_dispatch_flags = -1;
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static int hf_dispatch_flags_method = -1;
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static int hf_dispatch_flags_propget = -1;
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static int hf_dispatch_flags_propput = -1;
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static int hf_dispatch_flags_propputref = -1;
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#define DISPATCH_FLAGS_METHOD 1
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#define DISPATCH_FLAGS_PROPGET 2
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#define DISPATCH_FLAGS_PROPPUT 4
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#define DISPATCH_FLAGS_PROPPUTREF 8
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static e_uuid_t uuid_dispatch = { 0x00020400, 0x0000, 0x0000, { 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x46 } };
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static guint16 ver_dispatch = 0;
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static gint ett_dispatch = -1;
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static int proto_dispatch = -1;
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static int
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dissect_IDispatch_GetIDsOfNames_rqst(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, guint8 *drep)
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{
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e_uuid_t riid;
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guint32 u32Lcid;
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gchar szName[1000] = { 0 };
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guint32 u32MaxNameLen = sizeof(szName);
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guint32 u32Names;
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guint32 u32ArraySize;
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guint32 u32Pointer;
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guint32 u32Tmp;
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guint32 u32VariableOffset;
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offset = dissect_dcom_this(tvb, offset, pinfo, tree, drep);
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offset = dissect_dcom_UUID(tvb, offset, pinfo, tree, drep,
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hf_dispatch_riid, &riid);
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offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep,
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&u32ArraySize);
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u32VariableOffset = offset + u32ArraySize * 4;
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u32Tmp = u32ArraySize;
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while(u32Tmp--) {
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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u32VariableOffset = dissect_dcom_LPWSTR(tvb, u32VariableOffset, pinfo, tree, drep,
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hf_dispatch_name, szName, u32MaxNameLen);
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_append_fstr(pinfo->cinfo, COL_INFO, " \"%s\"", szName);
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}
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}
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}
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offset = u32VariableOffset;
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_names, &u32Names);
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_lcid, &u32Lcid);
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return offset;
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}
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static int
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dissect_IDispatch_GetIDsOfNames_resp(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, guint8 *drep)
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{
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guint32 u32DispId;
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guint32 u32ArraySize;
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guint32 u32Tmp;
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guint32 u32HResult;
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offset = dissect_dcom_that(tvb, offset, pinfo, tree, drep);
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offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep,
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&u32ArraySize);
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u32Tmp = u32ArraySize;
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while (u32Tmp--) {
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_id, &u32DispId);
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_append_fstr(pinfo->cinfo, COL_INFO, " ID=0x%08x", u32DispId);
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}
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}
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/* HRESULT of call */
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offset = dissect_dcom_HRESULT(tvb, offset, pinfo, tree, drep,
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&u32HResult);
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if (check_col(pinfo->cinfo, COL_INFO)) {
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col_append_fstr(pinfo->cinfo, COL_INFO, " -> %s",
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val_to_str(u32HResult, dcom_hresult_vals, "Unknown (0x%08x)") );
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}
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return offset;
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}
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static int
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dissect_IDispatch_Invoke_rqst(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, guint8 *drep)
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{
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guint32 u32DispIdMember;
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e_uuid_t riid;
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guint32 u32Lcid;
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guint16 u16Flags;
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guint16 u16Flags2;
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guint32 u32Args;
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guint32 u32NamedArgs;
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guint32 u32Pointer;
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guint32 u32ArraySize;
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guint32 u32VariableOffset;
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guint32 u32VarRef;
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guint32 u32VarRefIdx;
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guint32 u32TmpOffset;
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proto_item *feature_item;
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proto_tree *feature_tree;
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offset = dissect_dcom_this(tvb, offset, pinfo, tree, drep);
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_id, &u32DispIdMember);
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offset = dissect_dcom_UUID(tvb, offset, pinfo, tree, drep,
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hf_dispatch_riid, &riid);
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_lcid, &u32Lcid);
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/* dispatch flags */
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u32TmpOffset = dissect_dcom_WORD(tvb, offset, pinfo, NULL, drep,
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hf_dispatch_flags, &u16Flags);
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feature_item = proto_tree_add_uint (tree, hf_dispatch_flags, tvb, offset, 2, u16Flags);
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feature_tree = proto_item_add_subtree (feature_item, ett_dispatch_flags);
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if (feature_tree) {
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proto_tree_add_boolean (feature_tree, hf_dispatch_flags_propputref, tvb, offset, 2, u16Flags);
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proto_tree_add_boolean (feature_tree, hf_dispatch_flags_propput, tvb, offset, 2, u16Flags);
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proto_tree_add_boolean (feature_tree, hf_dispatch_flags_propget, tvb, offset, 2, u16Flags);
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proto_tree_add_boolean (feature_tree, hf_dispatch_flags_method, tvb, offset, 2, u16Flags);
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}
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if (u16Flags & DISPATCH_FLAGS_METHOD) {
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proto_item_append_text(feature_item, ", Method");
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}
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if (u16Flags & DISPATCH_FLAGS_PROPGET) {
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proto_item_append_text(feature_item, ", PropertyGet");
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}
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if (u16Flags & DISPATCH_FLAGS_PROPPUT) {
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proto_item_append_text(feature_item, ", PropertyPut");
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}
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if (u16Flags & DISPATCH_FLAGS_PROPPUTREF) {
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proto_item_append_text(feature_item, ", PropertyPutRef");
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}
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offset = u32TmpOffset;
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offset = dissect_dcom_WORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_flags2, &u16Flags2);
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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/* DISPPARAMS */
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/* VARIANT rgvarg[u32Args] */
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep,
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&u32ArraySize);
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u32VariableOffset = offset + u32ArraySize * 4;
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while(u32ArraySize--) {
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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u32VariableOffset = dissect_dcom_VARIANT(tvb, u32VariableOffset, pinfo, tree, drep, hf_dispatch_arg);
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}
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}
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offset = u32VariableOffset;
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}
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/* DISPID rgdispidNamedArgs[u32NamedArgs] */
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep,
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&u32ArraySize);
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u32VariableOffset = offset + u32ArraySize * 4;
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while(u32ArraySize--) {
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u32VariableOffset = dissect_dcom_dcerpc_pointer(tvb, u32VariableOffset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_id, &u32DispIdMember);
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}
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}
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offset = u32VariableOffset;
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}
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_args, &u32Args);
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_named_args, &u32NamedArgs);
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/* end of DISPPARAMS */
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/* offset = u32VariableOffset; */
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/* u32VarRef */
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_varref, &u32VarRef);
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/* rgVarRefIdx: UINT[u32VarRef] */
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offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep,
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&u32ArraySize);
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while(u32ArraySize--) {
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offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, drep,
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hf_dispatch_varrefidx, &u32VarRefIdx);
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}
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/* rgVarRef: VARIANT[u32VarRef] */
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offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, drep,
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&u32ArraySize);
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u32VariableOffset = offset + u32ArraySize * 4;
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while(u32ArraySize--) {
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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u32VariableOffset = dissect_dcom_VARIANT(tvb, u32VariableOffset, pinfo, tree, drep, hf_dispatch_varrefarg);
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}
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}
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return u32VariableOffset;
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}
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#if 0
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typedef struct tagEXCEPINFO {
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WORD wCode; /* An error code describing the error. */
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WORD wReserved;
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BSTR bstrSource; /* A source of the exception */
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BSTR bstrDescription; /* A description of the error */
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BSTR bstrHelpFile; /* Fully qualified drive, path, and file name */
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DWORD dwHelpContext; /* help context of topic within the help file */
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ULONG pvReserved;
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ULONG pfnDeferredFillIn;
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SCODE scode;
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} EXCEPINFO;
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#endif
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static int
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dissect_IDispatch_Invoke_resp(tvbuff_t *tvb, int offset,
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packet_info *pinfo, proto_tree *tree, guint8 *drep)
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{
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guint32 u32Pointer;
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guint32 u32VariableOffset;
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offset = dissect_dcom_that(tvb, offset, pinfo, tree, drep);
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/* XXX: this is not correct and has to be improved! */
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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u32VariableOffset = offset;
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u32VariableOffset = dissect_dcom_VARIANT(tvb, u32VariableOffset, pinfo, tree, drep, hf_dispatch_varresult);
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offset = u32VariableOffset;
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}
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/* ExcepInfo */
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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offset = dissect_dcom_tobedone_data(tvb, offset, pinfo, tree, drep,
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10000);
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}
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/* ArgErr */
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offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, drep,
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&u32Pointer);
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if (u32Pointer) {
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offset = dissect_dcom_tobedone_data(tvb, offset, pinfo, tree, drep,
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10000);
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}
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return offset;
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}
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/* sub dissector table of IDispatch interface */
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static dcerpc_sub_dissector dispatch_dissectors[] = {
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{ 0, "QueryInterface", NULL, NULL },
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{ 1, "AddRef", NULL, NULL },
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{ 2, "Release", NULL, NULL },
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{ 3, "GetTypeInfoCount", NULL, NULL },
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{ 4, "GetTypeInfo", NULL, NULL },
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{ 5, "GetIDsOfNames", dissect_IDispatch_GetIDsOfNames_rqst, dissect_IDispatch_GetIDsOfNames_resp },
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{ 6, "Invoke", dissect_IDispatch_Invoke_rqst, dissect_IDispatch_Invoke_resp },
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{ 0, NULL, NULL, NULL },
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};
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void
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proto_register_dcom_dispatch(void)
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{
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static hf_register_info hf_dispatch_array[] = {
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{ &hf_dispatch_opnum,
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{ "Operation", "dispatch_opnum", FT_UINT16, BASE_DEC, NULL, 0x0, "Operation", HFILL }},
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{ &hf_dispatch_riid,
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{ "RIID", "dispatch_riid", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_name,
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{ "Name", "hf_dispatch_name", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_names,
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{ "Names", "dispatch_names", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_lcid,
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{ "LCID", "dispatch_lcid", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_id,
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{ "ID", "dispatch_id", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_flags,
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{ "Flags", "dispatch_flags", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_flags2,
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{ "Flags2", "dispatch_flags2", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_arg,
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{ "Argument", "dispatch_arg", FT_NONE, BASE_NONE, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_args,
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{ "Args", "dispatch_args", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_named_args,
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{ "NamedArgs", "dispatch_named_args", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_varref,
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{ "VarRef", "dispatch_varref", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_varrefidx,
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{ "VarRefIdx", "dispatch_varrefidx", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_varrefarg,
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{ "VarRef", "dispatch_varrefarg", FT_NONE, BASE_NONE, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_varresult,
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{ "VarResult", "dispatch_varresult", FT_NONE, BASE_NONE, NULL, 0x0, "", HFILL }},
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{ &hf_dispatch_flags_method,
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{ "Method", "dispatch_flags_method", FT_BOOLEAN, 16, TFS (&flags_set_truth), DISPATCH_FLAGS_METHOD, "", HFILL }},
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{ &hf_dispatch_flags_propget,
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{ "PropertyGet", "dispatch_flags_propget", FT_BOOLEAN, 16, TFS (&flags_set_truth), DISPATCH_FLAGS_PROPGET, "", HFILL }},
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{ &hf_dispatch_flags_propput,
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{ "PropertyPut", "dispatch_flags_propput", FT_BOOLEAN, 16, TFS (&flags_set_truth), DISPATCH_FLAGS_PROPPUT, "", HFILL }},
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{ &hf_dispatch_flags_propputref,
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{ "PropertyPutRef", "dispatch_flags_propputref", FT_BOOLEAN, 16, TFS (&flags_set_truth), DISPATCH_FLAGS_PROPPUTREF, "", HFILL }},
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};
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static gint *ett[] = {
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&ett_dispatch,
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&ett_dispatch_flags
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};
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/* IDispatch currently only partially implemented */
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proto_dispatch = proto_register_protocol ("DCOM IDispatch", "IDispatch", "dispatch");
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proto_register_field_array (proto_dispatch, hf_dispatch_array, array_length (hf_dispatch_array));
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proto_register_subtree_array (ett, array_length (ett));
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}
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void
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proto_reg_handoff_dcom_dispatch(void)
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{
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dcerpc_init_uuid(proto_dispatch, ett_dispatch,
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&uuid_dispatch, ver_dispatch,
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dispatch_dissectors, hf_dispatch_opnum);
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}
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