epan/dissectors/packet-dcerpc-rpriv.c

   1 /* packet-dcerpc-rpriv.c
   2  *
   3  * Routines for DCERPC Privilege Server operations
   4  * Copyright 2002, Jaime Fournier <Jaime.Fournier@hush.com>
   5  * This information is based off the released idl files from opengroup.
   6  * ftp://ftp.opengroup.org/pub/dce122/dce/src/security.tar.gz  security/idl/rpriv.idl
   7  *
   8  * $Id$
   9  *
  10  * Wireshark - Network traffic analyzer
  11  * By Gerald Combs <gerald@wireshark.org>
  12  * Copyright 1998 Gerald Combs
  13  *
  14  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License
  16  * as published by the Free Software Foundation; either version 2
  17  * of the License, or (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, write to the Free Software
  26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  27  */
  28
  29 #include "config.h"
  30
  31
  32 #include <glib.h>
  33 #include <epan/packet.h>
  34 #include "packet-dcerpc.h"
  35
  36
  37 static int proto_rpriv = -1;
  38 static int hf_rpriv_opnum = -1;
  39 static int hf_rpriv_get_eptgt_rqst_authn_svc = -1;
  40 static int hf_rpriv_get_eptgt_rqst_authz_svc = -1;
  41 static int hf_rpriv_get_eptgt_rqst_var1 = -1;
  42 /* static int hf_rpriv_get_eptgt_rqst_key_size = -1; */
  43 static int hf_rpriv_get_eptgt_rqst_key_size2 = -1;
  44 static int hf_rpriv_get_eptgt_rqst_key_t = -1;
  45 static int hf_rpriv_get_eptgt_rqst_key_t2 = -1;
  46
  47 static gint ett_rpriv = -1;
  48
  49
  50 static e_uuid_t uuid_rpriv = { 0xb1e338f8, 0x9533, 0x11c9, { 0xa3, 0x4a, 0x08, 0x00, 0x1e, 0x01, 0x9c, 0x1e } };
  51 static guint16  ver_rpriv = 1;
  52
  53
  54 static int
  55 rpriv_dissect_get_eptgt_rqst (tvbuff_t *tvb, int offset,
  56                               packet_info *pinfo, proto_tree *tree,
  57                               dcerpc_info *di, guint8 *drep)
  58 {
  59         /*        [in]        handle_t         handle,
  60          *        [in]        unsigned32       authn_svc,
  61          *        [in]        unsigned32       authz_svc,
  62          *        [in]        rpriv_pickle_t   *ptgt_req,
  63          *                    unsigned32          num_bytes;
  64          *                    [size_is(num_bytes)]
  65          *                    byte            bytes[];
  66          */
  67
  68         guint32 authn_svc, authz_svc, key_size, key_size2, var1;
  69         const char *key_t1 = NULL;
  70         const char *key_t2 = NULL;
  71
  72         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_authn_svc, &authn_svc);
  73         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_authz_svc, &authz_svc);
  74         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_var1, &var1);
  75         offset += 276;
  76         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_key_size2, &key_size);
  77         /* advance to get size of cell, and princ */
  78
  79         proto_tree_add_item (tree, hf_rpriv_get_eptgt_rqst_key_t, tvb, offset, key_size, ENC_ASCII|ENC_NA);
  80         key_t1 = tvb_get_string(wmem_packet_scope(), tvb, offset, key_size);
  81         offset += key_size;
  82
  83         offset += 8;
  84         offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, di, drep, hf_rpriv_get_eptgt_rqst_key_size2, &key_size2);
  85         proto_tree_add_item (tree, hf_rpriv_get_eptgt_rqst_key_t2, tvb, offset, key_size2, ENC_ASCII|ENC_NA);
  86         key_t2 = tvb_get_string(wmem_packet_scope(), tvb, offset, key_size2);
  87         offset += key_size2;
  88
  89
  90         col_append_fstr(pinfo->cinfo, COL_INFO,
  91                                 " Request for: %s in %s ", key_t2, key_t1);
  92
  93         return offset;
  94
  95 }
  96
  97
  98 static dcerpc_sub_dissector rpriv_dissectors[] = {
  99         { 0, "get_ptgt", NULL,NULL},
 100         { 1, "become_delegate", NULL, NULL},
 101         { 2, "become_impersonator", NULL, NULL},
 102         { 3, "get_eptgt", rpriv_dissect_get_eptgt_rqst , NULL},
 103         { 0, NULL, NULL, NULL }
 104 };
 105
 106 void
 107 proto_register_rpriv (void)
 108 {
 109         static hf_register_info hf[] = {
 110                 { &hf_rpriv_opnum,
 111                   { "Operation", "rpriv.opnum", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 112                 { &hf_rpriv_get_eptgt_rqst_authn_svc,
 113                   { "Authn_Svc", "rpriv.get_eptgt_rqst_authn_svc", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 114                 { &hf_rpriv_get_eptgt_rqst_authz_svc,
 115                   { "Authz_Svc", "rpriv.get_eptgt_rqst_authz_svc", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 116 #if 0
 117                 { &hf_rpriv_get_eptgt_rqst_key_size,
 118                   { "Key_Size", "rpriv.get_eptgt_rqst_key_size", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 119 #endif
 120                 { &hf_rpriv_get_eptgt_rqst_var1,
 121                   { "Var1", "rpriv.get_eptgt_rqst_var1", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 122                 { &hf_rpriv_get_eptgt_rqst_key_size2,
 123                   { "Key_Size", "rpriv.get_eptgt_rqst_key_size2", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
 124                 { &hf_rpriv_get_eptgt_rqst_key_t,
 125                   { "Key_t", "rpriv.get_eptgt_rqst_key_t", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 126                 { &hf_rpriv_get_eptgt_rqst_key_t2,
 127                   { "Key_t2", "rpriv.get_eptgt_rqst_key_t2", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
 128
 129         };
 130
 131         static gint *ett[] = {
 132                 &ett_rpriv,
 133         };
 134         proto_rpriv = proto_register_protocol ("Privilege Server operations", "rpriv", "rpriv");
 135         proto_register_field_array (proto_rpriv, hf, array_length (hf));
 136         proto_register_subtree_array (ett, array_length (ett));
 137 }
 138
 139 void
 140 proto_reg_handoff_rpriv (void)
 141 {
 142         /* Register the protocol as dcerpc */
 143         dcerpc_init_uuid (proto_rpriv, ett_rpriv, &uuid_rpriv, ver_rpriv, rpriv_dissectors, hf_rpriv_opnum);
 144 }