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|
/* packet-dcerpc-efs.c
* Routines for the efsrpc MSRPC interface
* Copyright 2004 Ronnie Sahlberg, Jean-Baptiste Marchand
*
* $Id: packet-dcerpc-efs.c,v 1.2 2004/05/19 04:52:31 tpot Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include "packet-dcerpc.h"
#include "packet-dcerpc-nt.h"
#include "packet-dcerpc-efs.h"
#include "smb.h"
static int proto_dcerpc_efs = -1;
static int hf_efsrpc_opnum = -1;
static int hf_efsrpc_rc = -1;
static int hf_efsrpc_filename = -1;
static int hf_efsrpc_flags = -1;
static int hf_efsrpc_hnd = -1;
static int hf_efsrpc_reserved = -1;
static int hf_efsrpc_num_entries = -1;
static int hf_efsrpc_data_size = -1;
static int hf_efsrpc_cert_dn = -1;
static gint ett_dcerpc_efs = -1;
static gint ett_dcerpc_efs_cert_hash = -1;
/*
IDL [ uuid(c681d488-d850-11d0-8c52-00c04fd90f7e),
IDL version(1.0),
IDL implicit_handle(handle_t rpc_binding)
IDL ] interface efsrpc
*/
static e_uuid_t uuid_dcerpc_efs = {
0xc681d488, 0xd850, 0x11d0,
{ 0x8c, 0x52, 0x00, 0xc0, 0x4f, 0xd9, 0x0f, 0x7e }
};
static guint16 ver_dcerpc_efs = 1;
/*
IDL long EfsRpcOpenFileRaw(
IDL [out] [context_handle] void *pvContext,
IDL [in] [string] wchar_t FileName,
IDL [in] long Flags
IDL );
*/
static int
efsrpc_dissect_open_file_raw_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_cvstring(tvb, offset, pinfo, tree, drep,
sizeof(guint16),
hf_efsrpc_filename, TRUE, NULL);
offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, drep,
hf_efsrpc_flags, NULL);
return offset;
}
static int
efsrpc_dissect_open_file_raw_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_nt_policy_hnd(tvb, offset, pinfo, tree, drep,
hf_efsrpc_hnd, NULL, NULL, TRUE, FALSE);
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_efsrpc_rc, NULL);
return offset;
}
/*
IDL long EfsRpcReadFileRaw(
IDL [in] [context_handle] void *pvContext,
IDL [out] ??? element_5
IDL );
*/
static int
efsrpc_dissect_read_file_raw_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_nt_policy_hnd(tvb, offset, pinfo, tree, drep,
hf_efsrpc_hnd, NULL, NULL, FALSE, FALSE);
return offset;
}
/*
IDL long EfsRpcWriteFileRaw(
IDL [in] [context_handle] void *pvContext,
IDL [in] ??? element_7
IDL );
*/
static int
efsrpc_dissect_write_file_raw_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_nt_policy_hnd(tvb, offset, pinfo, tree, drep,
hf_efsrpc_hnd, NULL, NULL, FALSE, FALSE);
return offset;
}
static int
efsrpc_dissect_write_file_raw_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_efsrpc_rc, NULL);
return offset;
}
/*
IDL
IDL void EfsRpcCloseRaw(
IDL [in,out] [context_handle] void *pvContext,
IDL );
*/
static int
efsrpc_dissect_close_file_raw_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_nt_policy_hnd(tvb, offset, pinfo, tree, drep,
hf_efsrpc_hnd, NULL, NULL, FALSE, TRUE);
return offset;
}
static int
efsrpc_dissect_close_file_raw_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_nt_policy_hnd(tvb, offset, pinfo, tree, drep,
hf_efsrpc_hnd, NULL, NULL, FALSE, FALSE);
return offset;
}
/*
IDL long EfsRpcEncryptFileSrv(
IDL [in] [string] wchar_t Filename
IDL );
*/
static int
efsrpc_dissect_encrypt_file_srv_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_cvstring(tvb, offset, pinfo, tree, drep,
sizeof(guint16),
hf_efsrpc_filename, TRUE, NULL);
return offset;
}
static int
efsrpc_dissect_encrypt_file_srv_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_efsrpc_rc, NULL);
return offset;
}
/*
IDL long EfsRpcDecryptFileSrv(
IDL [in] [string] wchar_t FileName,
IDL [in] long Reserved
IDL );
*/
static int
efsrpc_dissect_decrypt_file_srv_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_cvstring(tvb, offset, pinfo, tree, drep,
sizeof(guint16),
hf_efsrpc_filename, TRUE, NULL);
offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, drep,
hf_efsrpc_reserved, NULL);
return offset;
}
static int
efsrpc_dissect_decrypt_file_srv_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_efsrpc_rc, NULL);
return offset;
}
/*
IDL typedef struct {
IDL long cbData;
IDL [size_is(cbData)] void *pbData;
IDL } EFS_HASH_BLOB;
*/
static int
efsrpc_dissect_EFS_HASH_BLOB_data(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
guint8 *drep)
{
guint32 size;
dcerpc_info *di = (dcerpc_info *)pinfo->private_data;
if(di->conformant_run){
return offset; /* cant modify offset while performing conformant run */
}
offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, drep,
hf_efsrpc_data_size, &size);
/* XXX insert some sort of proto_tree_add_item here and show hex data
of the blob */
offset += size;
return offset;
}
static int
efsrpc_dissect_EFS_HASH_BLOB(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
guint8 *drep)
{
guint32 size;
offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, drep,
hf_efsrpc_data_size, &size);
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
efsrpc_dissect_EFS_HASH_BLOB_data, NDR_POINTER_UNIQUE,
"HASH_BLOB", -1);
return offset;
}
static int
efsrpc_dissect_efs_SID_ptr(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
guint8 *drep)
{
offset = dissect_ndr_nt_SID(tvb, offset, pinfo, tree, drep);
return offset;
}
/*
IDL typedef struct {
IDL long cbTotalLength;
IDL SID *pUserSid;
IDL EFS_HASH_BLOB *pHash;
IDL [string] wchar_t lpDisplayInformation;
IDL } ENCRYPTION_CERTIFICATE_HASH;
*/
static int
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *parent_tree,
guint8 *drep)
{
proto_item *item = NULL;
proto_tree *tree = NULL;
if (parent_tree) {
item = proto_tree_add_text(parent_tree, tvb, offset, -1, "ENCRYPTION_CERTIFICATE_HASH");
tree = proto_item_add_subtree(item, ett_dcerpc_efs_cert_hash);
}
offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, drep,
hf_efsrpc_data_size, NULL);
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
efsrpc_dissect_efs_SID_ptr, NDR_POINTER_UNIQUE,
"SID", -1);
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
efsrpc_dissect_EFS_HASH_BLOB, NDR_POINTER_UNIQUE,
"EFS_HASH_BLOB", -1);
offset = dissect_ndr_pointer_cb(
tvb, offset, pinfo, tree, drep,
dissect_ndr_wchar_cvstring, NDR_POINTER_UNIQUE,
"Certificate DN", hf_efsrpc_cert_dn, cb_wstr_postprocess,
GINT_TO_POINTER(CB_STR_COL_INFO | 1));
return offset;
}
static int
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH_ptr(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
guint8 *drep)
{
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH, NDR_POINTER_UNIQUE,
"ENCRYPTION_CERTIFICATE_HASH", -1);
return offset;
}
static int
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH_array(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
guint8 *drep)
{
offset = dissect_ndr_ucarray(tvb, offset, pinfo, tree, drep,
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH_ptr);
return offset;
}
/*
IDL typedef struct {
IDL long nCert_Hash;
IDL [size_is(nCert_Hash)] [unique] ENCRYPTION_CERTIFICATE_HASH *pUsers;
IDL } ENCRYPTION_CERTIFICATE_HASH_LIST;
*/
static int
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH_LIST(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_uint32(tvb, offset, pinfo, tree, drep,
hf_efsrpc_num_entries, NULL);
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH_array, NDR_POINTER_UNIQUE,
"ENCRYPTION_CERTIFICATE_HASH array:", -1);
return offset;
}
/*
IDL long EfsRpcQueryUsersOnFile(
IDL [in] [string] wchar_t FileName,
IDL [out] [ref] ENCRYPTION_CERTIFICATE_HASH_LIST **pUsers
IDL );
*/
static int
efsrpc_dissect_query_users_on_file_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_cvstring(tvb, offset, pinfo, tree, drep,
sizeof(guint16),
hf_efsrpc_filename, TRUE, NULL);
return offset;
}
static int
efsrpc_dissect_query_users_on_file_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH_LIST, NDR_POINTER_UNIQUE,
"ENCRYPTION_CERTIFICATE_HASH_LIST", -1);
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_efsrpc_rc, NULL);
return offset;
}
/*
IDL long EfsRpcQueryRecoveryAgents(
IDL [in] [string] wchar_t FileName,
IDL [out] [ref] ENCRYPTION_CERTIFICATE_HASH_LIST **pRecoveryAgents
IDL );
*/
static int
efsrpc_dissect_query_recovery_agents_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_cvstring(tvb, offset, pinfo, tree, drep,
sizeof(guint16),
hf_efsrpc_filename, TRUE, NULL);
return offset;
}
static int
efsrpc_dissect_query_recovery_agents_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
efsrpc_dissect_ENCRYPTION_CERTIFICATE_HASH_LIST, NDR_POINTER_UNIQUE,
"ENCRYPTION_CERTIFICATE_HASH_LIST", -1);
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_efsrpc_rc, NULL);
return offset;
}
/*
IDL long EfsRpcRemoveUsersFromFile(
IDL [in] [string] wchar_t FileName,
IDL [in] ENCRYPTION_CERTIFICATE_LIST Hashes
IDL );
*/
static int
efsrpc_dissect_remove_users_from_file_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_cvstring(tvb, offset, pinfo, tree, drep,
sizeof(guint16),
hf_efsrpc_filename, TRUE, NULL);
#if 0
offset = efsrpc_dissect_ENCRYPTION_CERTIFICATE_LIST(tvb, offset,
pinfo, tree, drep);
#endif
return offset;
}
static int
efsrpc_dissect_remove_users_from_file_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_efsrpc_rc, NULL);
return offset;
}
/*
IDL long EfsRpcAddUsersToFile(
IDL [in] [string] wchar_t FileName,
IDL [in] ENCRYPTION_CERTIFICATE_LIST Hashes
IDL );
*/
static int
efsrpc_dissect_add_users_from_file_rqst(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ndr_cvstring(tvb, offset, pinfo, tree, drep,
sizeof(guint16),
hf_efsrpc_filename, TRUE, NULL);
#if 0
offset = efsrpc_dissect_ENCRYPTION_CERTIFICATE_LIST(tvb, offset,
pinfo, tree, drep);
#endif
return offset;
}
static int
efsrpc_dissect_add_users_from_file_reply(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, guint8 *drep)
{
offset = dissect_ntstatus(tvb, offset, pinfo, tree, drep,
hf_efsrpc_rc, NULL);
return offset;
}
/*
IDL typedef struct {
IDL long dwCertEncodingType;
IDL long cbData;
IDL [size_is(cbData)] [unique] byte *pbData
IDL } EFS_CERTIFICATE_BLOB;
*/
/*
IDL typedef struct {
IDL long TotalLength;
IDL [unique] SID *pUserSid;
IDL [unique] EFS_CERTIFICATE_BLOB *pCertBlob;
IDL } ENCRYPTION_CERTIFICATE;
*/
/*
IDL long EfsRpcSetFileEncryptionKey(
IDL [in] [unique] ENCRYPTION_CERTIFICATE *pEncryptionCertificate
IDL );
*/
static dcerpc_sub_dissector dcerpc_efs_dissectors[] = {
{ EFS_RPC_OPEN_FILE_RAW , "EfsRpcOpenFileRaw",
efsrpc_dissect_open_file_raw_rqst,
efsrpc_dissect_open_file_raw_reply },
{ EFS_RPC_READ_FILE_RAW, "EfsRpcReadFileRaw",
efsrpc_dissect_read_file_raw_rqst,
NULL },
{ EFS_RPC_WRITE_FILE_RAW, "EfsRpcWriteFileRaw",
efsrpc_dissect_write_file_raw_rqst,
efsrpc_dissect_write_file_raw_reply },
{ EFS_RPC_CLOSE_RAW, "EfsRpcCloseRaw",
efsrpc_dissect_close_file_raw_rqst,
efsrpc_dissect_close_file_raw_reply },
{ EFS_RPC_ENCRYPT_FILE_SRV, "EfsRpcEncryptFileSrv",
efsrpc_dissect_encrypt_file_srv_rqst,
efsrpc_dissect_encrypt_file_srv_reply },
{ EFS_RPC_DECRYPT_FILE_SRV, "EfsRpcDecryptFileSrv",
efsrpc_dissect_decrypt_file_srv_rqst,
efsrpc_dissect_decrypt_file_srv_reply },
{ EFS_RPC_QUERY_USERS_ON_FILE, "EfsRpcQueryUsersOnFile",
efsrpc_dissect_query_users_on_file_rqst,
efsrpc_dissect_query_users_on_file_reply },
{ EFS_RPC_QUERY_RECOVERY_AGENTS, "EfsRpcQueryRecoveryAgents",
efsrpc_dissect_query_recovery_agents_rqst,
efsrpc_dissect_query_recovery_agents_reply },
{ EFS_RPC_REMOVE_USERS_FROM_FILE, "EfsRpcRemoveUsersFromFile",
efsrpc_dissect_remove_users_from_file_rqst,
efsrpc_dissect_remove_users_from_file_reply },
{ EFS_RPC_ADD_USERS_TO_FILE, "EfsRpcAddUsersToFile",
efsrpc_dissect_add_users_from_file_rqst,
efsrpc_dissect_add_users_from_file_reply },
{ EFS_RPC_SET_FILE_ENCRYPTION_KEY, "EfsRpcSetFileEncryptionKey"
, NULL, NULL },
{ EFS_RPC_NOT_SUPPORTED, "EfsRpcNotSupported"
, NULL, NULL },
{ EFS_RPC_FILE_KEY_INFO, "EfsRpcFileKeyInfo"
, NULL, NULL },
{ EFS_RPC_DUPLICATE_ENCRYPTION_INFO_FILE,
"EfsRpcDuplicateEncryptionInfoFile", NULL, NULL },
{ 0, NULL, NULL, NULL }
};
void
proto_register_dcerpc_efs(void)
{
static hf_register_info hf[] = {
{ &hf_efsrpc_opnum, {
"Operation", "efsrpc.opnum", FT_UINT16, BASE_DEC,
NULL, 0x0, "", HFILL }},
{ &hf_efsrpc_rc, {
"Return code", "efsrpc.rc", FT_UINT32, BASE_HEX,
VALS(NT_errors), 0x0, "EFSRPC return code", HFILL }},
{ &hf_efsrpc_filename,
{ "Filename", "efsrpc.filename", FT_STRING, BASE_NONE,
NULL, 0x0, "File name", HFILL}},
{ &hf_efsrpc_flags, {
"Flags", "efsrpc.flags", FT_UINT32, BASE_HEX,
NULL, 0x0, "EFSRPC Flags", HFILL }},
{ &hf_efsrpc_hnd, {
"Context Handle", "efsrpc.hnd", FT_BYTES,
BASE_NONE, NULL, 0x0, "Context Handle", HFILL}},
{ &hf_efsrpc_reserved, {
"Reserved value", "efsrpc.reserved", FT_UINT32, BASE_HEX,
NULL, 0x0, "Reserved value", HFILL }},
{ &hf_efsrpc_num_entries,
{ "Number of entries", "efsrpc.num_entries", FT_UINT32,
BASE_DEC, NULL, 0x0, "Number of Entries", HFILL}},
{ &hf_efsrpc_data_size,
{ "Size of data structure", "efsrpc.data_size", FT_UINT32,
BASE_DEC, NULL, 0x0, "Size of data structure", HFILL}},
{ &hf_efsrpc_cert_dn,
{ "Certificate DN", "efsrpc.cert_dn", FT_STRING, BASE_NONE,
NULL, 0x0, "Distinguished Name of EFS certificate", HFILL}},
};
static gint *ett[] = {
&ett_dcerpc_efs,
&ett_dcerpc_efs_cert_hash
};
proto_dcerpc_efs = proto_register_protocol(
"Microsoft Encrypted File System Service", "EFSRPC", "efsrpc");
proto_register_field_array(proto_dcerpc_efs, hf,
array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_dcerpc_efs(void)
{
/* Register protocol as dcerpc */
dcerpc_init_uuid(proto_dcerpc_efs, ett_dcerpc_efs,
&uuid_dcerpc_efs, ver_dcerpc_efs,
dcerpc_efs_dissectors, hf_efsrpc_opnum);
}
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