epan/dissectors/packet-dcom-remact.c

   1 /* packet-dcom-remact.c
   2  * Routines for DCOM Remote Activation
   3  * Copyright 2001, Todd Sabin <tas@webspan.net>
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 /* see packet-dcom.c for details about DCOM */
  27
  28 #include "config.h"
  29
  30 #include <glib.h>
  31 #include <epan/packet.h>
  32 #include "packet-dcerpc.h"
  33 #include "packet-dcom.h"
  34
  35
  36 void proto_register_dcom_remact(void);
  37 void proto_reg_handoff_dcom_remact(void);
  38
  39 static int hf_remact_opnum = -1;
  40
  41 static int hf_remact_requested_protseqs = -1;
  42 static int hf_remact_protseqs = -1;
  43 static int hf_remact_interfaces = -1;
  44 static int hf_remact_mode = -1;
  45 static int hf_remact_client_impl_level = -1;
  46 static int hf_remact_object_name = -1;
  47 static int hf_remact_object_storage = -1;
  48 static int hf_remact_interface_data = -1;
  49
  50 static int hf_remact_oxid_bindings = -1;
  51 static int hf_remact_authn_hint = -1;
  52
  53
  54 static int proto_remact = -1;
  55 static gint ett_remact = -1;
  56 static e_uuid_t uuid_remact = { 0x4d9f4ab8, 0x7d1c, 0x11cf, { 0x86, 0x1e, 0x00, 0x20, 0xaf, 0x6e, 0x7c, 0x57 } };
  57 static guint16  ver_remact = 0;
  58
  59
  60 static int
  61 dissect_remact_remote_activation_rqst(tvbuff_t *tvb, int offset,
  62                                       packet_info *pinfo, proto_tree *tree, dcerpc_info *di, guint8 *drep)
  63 {
  64         guint32 u32ClientImpLevel;
  65         guint32 u32Mode;
  66         guint32 u32Interfaces;
  67         guint32 u32Pointer;
  68         guint32 u32ArraySize;
  69         guint32 u32ItemIdx;
  70         guint16 u16ProtSeqs;
  71         e_uuid_t clsid;
  72         e_uuid_t iid;
  73
  74         gchar   szObjName[1000] = { 0 };
  75         guint32 u32ObjNameLen = sizeof(szObjName);
  76
  77         offset = dissect_dcom_this(tvb, offset, pinfo, tree, di, drep);
  78
  79         offset = dissect_dcom_append_UUID(tvb, offset, pinfo, tree, di, drep,
  80                                           hf_dcom_clsid, -1, &clsid);
  81
  82         offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, di, drep,
  83                                              &u32Pointer);
  84         if (u32Pointer) {
  85                 offset = dissect_dcom_BSTR(tvb, offset, pinfo, tree, di, drep,
  86                                            hf_remact_object_name, szObjName, u32ObjNameLen);
  87         }
  88
  89         offset = dissect_dcom_PMInterfacePointer(tvb, offset, pinfo, tree, di, drep,
  90                                                  hf_remact_object_storage, NULL /* XXX */);
  91
  92         offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, di, drep,
  93                                     hf_remact_client_impl_level, &u32ClientImpLevel);
  94         offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, di, drep,
  95                                     hf_remact_mode, &u32Mode);
  96
  97         /* Interfaces */
  98         offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, di, drep,
  99                                     hf_remact_interfaces, &u32Interfaces);
 100         offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, di, drep,
 101                                              &u32Pointer);
 102         if (u32Pointer) {
 103                 offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, di, drep,
 104                                                         &u32ArraySize);
 105                 u32ItemIdx = 1;
 106                 while (u32Interfaces--) {
 107                         offset = dissect_dcom_append_UUID(tvb, offset, pinfo, tree, di, drep,
 108                                                           hf_dcom_iid, u32ItemIdx, &iid);
 109
 110                         u32ItemIdx++;
 111                 }
 112         }
 113
 114         offset = dissect_dcom_WORD(tvb, offset, pinfo, tree, di, drep,
 115                                    hf_remact_requested_protseqs, &u16ProtSeqs);
 116
 117         offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, di, drep,
 118                                                 &u32ArraySize);
 119         u32ItemIdx = 1;
 120         while (u32ArraySize--) {
 121                 offset = dissect_dcom_WORD(tvb, offset, pinfo, tree, di, drep,
 122                                            hf_remact_protseqs, &u16ProtSeqs);
 123                 u32ItemIdx++;
 124         }
 125
 126         return offset;
 127 }
 128
 129
 130 static int
 131 dissect_remact_remote_activation_resp(tvbuff_t *tvb, int offset,
 132                                       packet_info *pinfo, proto_tree *tree, dcerpc_info *di, guint8 *drep)
 133 {
 134         guint32 u32Pointer;
 135         e_uuid_t ipid;
 136         guint32 u32AuthnHint;
 137         guint16 u16VersionMajor;
 138         guint16 u16VersionMinor;
 139         guint32 u32HResult;
 140         guint32 u32ArraySize;
 141         guint32 u32Idx;
 142         guint32 u32VariableOffset;
 143
 144
 145         offset = dissect_dcom_that(tvb, offset, pinfo, tree, di, drep);
 146
 147         offset = dissect_dcom_ID(tvb, offset, pinfo, tree, di, drep,
 148                                  hf_dcom_oxid, NULL);
 149         offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, di, drep,
 150                                              &u32Pointer);
 151         if (u32Pointer) {
 152                 offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, di, drep,
 153                                                         &u32ArraySize);
 154                 offset = dissect_dcom_DUALSTRINGARRAY(tvb, offset, pinfo, tree, di, drep,
 155                                                       hf_remact_oxid_bindings, NULL);
 156         }
 157
 158         offset = dissect_dcom_UUID(tvb, offset, pinfo, tree, di, drep,
 159                                    hf_dcom_ipid, &ipid);
 160         offset = dissect_dcom_DWORD(tvb, offset, pinfo, tree, di, drep,
 161                                     hf_remact_authn_hint, &u32AuthnHint);
 162         offset = dissect_dcom_COMVERSION(tvb, offset, pinfo, tree, di, drep,
 163                                          &u16VersionMajor, &u16VersionMinor);
 164
 165         offset = dissect_dcom_HRESULT(tvb, offset, pinfo, tree, di, drep,
 166                                       &u32HResult);
 167
 168         offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, di, drep,
 169                                                 &u32ArraySize);
 170         u32VariableOffset = offset + u32ArraySize * 4;
 171         while (u32ArraySize--) {
 172                 offset = dissect_dcom_dcerpc_pointer(tvb, offset, pinfo, tree, di, drep,
 173                                                      &u32Pointer);
 174                 if (u32Pointer) {
 175                         u32VariableOffset = dissect_dcom_MInterfacePointer(tvb, u32VariableOffset, pinfo, tree, di, drep,
 176                                                                            hf_remact_interface_data, NULL /* XXX */);
 177                 }
 178         }
 179         offset = u32VariableOffset;
 180
 181         offset = dissect_dcom_dcerpc_array_size(tvb, offset, pinfo, tree, di, drep,
 182                                                 &u32ArraySize);
 183         u32Idx = 1;
 184         while (u32ArraySize--) {
 185                 offset = dissect_dcom_indexed_HRESULT(tvb, offset, pinfo, tree, di, drep,
 186                                                       &u32HResult, u32Idx);
 187                 /* update column info now */
 188                 col_append_fstr(pinfo->cinfo, COL_INFO, " %s[%u]",
 189                                 val_to_str(u32HResult, dcom_hresult_vals, "Unknown (0x%08x)"),
 190                                 u32Idx);
 191                 u32Idx++;
 192         }
 193
 194         offset = dissect_dcom_HRESULT(tvb, offset, pinfo, tree, di, drep,
 195                                       &u32HResult);
 196
 197         /* update column info now */
 198         col_append_fstr(pinfo->cinfo, COL_INFO, " -> %s",
 199                         val_to_str(u32HResult, dcom_hresult_vals, "Unknown (0x%08x)"));
 200
 201         return offset;
 202 }
 203
 204
 205 static dcerpc_sub_dissector remact_dissectors[] = {
 206         { 0, "RemoteActivation", dissect_remact_remote_activation_rqst, dissect_remact_remote_activation_resp },
 207         { 0, NULL, NULL, NULL },
 208 };
 209
 210
 211 void
 212 proto_register_remact (void)
 213 {
 214         static hf_register_info hf_remact[] = {
 215                 { &hf_remact_opnum,
 216                   { "Operation", "remact.opnum", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 217
 218                 { &hf_remact_requested_protseqs,
 219                   { "RequestedProtSeqs", "remact.req_prot_seqs", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 220                 { &hf_remact_protseqs,
 221                   { "ProtSeqs", "remact.prot_seqs", FT_UINT16, BASE_DEC, VALS(dcom_protseq_vals), 0x0, NULL, HFILL }},
 222                 { &hf_remact_interfaces,
 223                   { "Interfaces", "remact.interfaces", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 224                 { &hf_remact_mode,
 225                   { "Mode", "remact.mode", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 226                 { &hf_remact_client_impl_level,
 227                   { "ClientImplLevel", "remact.client_impl_level", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 228                 { &hf_remact_object_name,
 229                   { "ObjectName", "remact.object_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 230                 { &hf_remact_object_storage,
 231                   { "ObjectStorage", "remact.object_storage", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 232                 { &hf_remact_interface_data,
 233                   { "InterfaceData", "remact.interface_data", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 234
 235                 { &hf_remact_oxid_bindings,
 236                   { "OxidBindings", "remact.oxid_bindings", FT_NONE, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 237                 { &hf_remact_authn_hint,
 238                   { "AuthnHint", "remact.authn_hint", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 239         };
 240
 241         static gint *ett[] = {
 242                 &ett_remact
 243         };
 244
 245         proto_remact = proto_register_protocol ("DCOM IRemoteActivation", "REMACT", "remact");
 246         proto_register_field_array (proto_remact, hf_remact, array_length (hf_remact));
 247         proto_register_subtree_array (ett, array_length (ett));
 248 }
 249
 250 void
 251 proto_reg_handoff_remact (void)
 252 {
 253         /* Register the protocol as dcerpc */
 254         dcerpc_init_uuid (proto_remact, ett_remact, &uuid_remact, ver_remact, remact_dissectors, hf_remact_opnum);
 255 }