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/*
Unix SMB/CIFS implementation.
Copyright (C) Stefan Metzmacher 2010-2011
Copyright (C) Andrew Tridgell 2010-2011
Copyright (C) Simo Sorce 2010
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __LIBRPC_RPC_DCERPC_UTIL_H__
#define __LIBRPC_RPC_DCERPC_UTIL_H__
#include "replace.h"
#include <talloc.h>
#include "lib/util/data_blob.h"
#include "librpc/rpc/rpc_common.h"
#include "librpc/gen_ndr/dcerpc.h"
void dcerpc_set_frag_length(DATA_BLOB *blob, uint16_t v);
uint16_t dcerpc_get_frag_length(const DATA_BLOB *blob);
void dcerpc_set_auth_length(DATA_BLOB *blob, uint16_t v);
uint16_t dcerpc_get_auth_length(const DATA_BLOB *blob);
uint8_t dcerpc_get_endian_flag(DATA_BLOB *blob);
uint8_t dcerpc_get_auth_type(const DATA_BLOB *blob);
uint8_t dcerpc_get_auth_level(const DATA_BLOB *blob);
uint32_t dcerpc_get_auth_context_id(const DATA_BLOB *blob);
const char *dcerpc_default_transport_endpoint(TALLOC_CTX *mem_ctx,
enum dcerpc_transport_t transport,
const struct ndr_interface_table *table);
NTSTATUS dcerpc_pull_ncacn_packet(TALLOC_CTX *mem_ctx,
const DATA_BLOB *blob,
struct ncacn_packet *r);
/**
* @brief Pull a dcerpc_auth structure, taking account of any auth
* padding in the blob. For request/response packets we pass
* the whole data blob, so auth_data_only must be set to false
* as the blob contains data+pad+auth and no just pad+auth.
*
* @param pkt - The ncacn_packet strcuture
* @param mem_ctx - The mem_ctx used to allocate dcerpc_auth elements
* @param pkt_trailer - The packet trailer data, usually the trailing
* auth_info blob, but in the request/response case
* this is the stub_and_verifier blob.
* @param auth - A preallocated dcerpc_auth *empty* structure
* @param auth_length - The length of the auth trail, sum of auth header
* lenght and pkt->auth_length
* @param auth_data_only - Whether the pkt_trailer includes only the auth_blob
* (+ padding) or also other data.
*
* @return - A NTSTATUS error code.
*/
NTSTATUS dcerpc_pull_auth_trailer(const struct ncacn_packet *pkt,
TALLOC_CTX *mem_ctx,
const DATA_BLOB *pkt_trailer,
struct dcerpc_auth *auth,
uint32_t *auth_length,
bool auth_data_only);
NTSTATUS dcerpc_verify_ncacn_packet_header(const struct ncacn_packet *pkt,
enum dcerpc_pkt_type ptype,
size_t max_auth_info,
uint8_t required_flags,
uint8_t optional_flags);
struct tevent_req *dcerpc_read_ncacn_packet_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct tstream_context *stream);
NTSTATUS dcerpc_read_ncacn_packet_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
struct ncacn_packet **pkt,
DATA_BLOB *buffer);
#endif
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