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/*
* Unix SMB/CIFS implementation.
*
* Copyright (C) Stefan Metzmacher 2009
*
* 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 _LIBCLI_UTIL_TSTREAM_H_
#define _LIBCLI_UTIL_TSTREAM_H_
/**
* @brief The function which will report the size of the full pdu.
*
* @param[in] private_data Some private data which could be used.
*
* @param[in] blob The received blob to get the size from.
*
* @param[out] packet_size The pointer to store the size of the full pdu.
*
* @return NT_STATUS_OK on success, STATUS_MORE_ENTRIES if there
* are more entries.
*/
typedef NTSTATUS tstream_read_pdu_blob_full_fn_t(void *private_data,
DATA_BLOB blob,
size_t *packet_size);
/**
* @brief A helper function to read a full PDU from a stream
*
* This function is designed for simple PDUs and as compat layer
* for the Samba4 packet interface.
*
* tstream_readv_pdu_send() is a more powerful interface,
* which is part of the main (non samba specific) tsocket code.
*
* @param[in] mem_ctx The memory context for the result.
*
* @param[in] ev The event context the operation should work on.
*
* @param[in] stream The stream to read data from.
*
* @param[in] inital_read_size The initial byte count that is needed to workout
* the full pdu size.
*
* @param[in] full_fn The callback function that will report the size
* of the full pdu.
*
* @param[in] full_private The private data for the callback function.
*
* @return The async request handle. NULL on fatal error.
*
* @see tstream_read_pdu_blob_recv()
* @see tstream_readv_pdu_send()
* @see tstream_readv_pdu_queue_send()
*
*/
struct tevent_req *tstream_read_pdu_blob_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct tstream_context *stream,
size_t inital_read_size,
tstream_read_pdu_blob_full_fn_t *full_fn,
void *full_private);
/**
* @brief Receive the result of the tstream_read_pdu_blob_send() call.
*
* @param[in] req The tevent request from tstream_read_pdu_blob_send().
*
* @param[in] mem_ctx The memory context for returned pdu DATA_BLOB.
*
* @param[in] pdu_blob The DATA_BLOB with the full pdu.
*
* @return The NTSTATUS result, NT_STATUS_OK on success
* and others on failure.
*
* @see tstream_read_pdu_blob_send()
*/
NTSTATUS tstream_read_pdu_blob_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
DATA_BLOB *pdu_blob);
#endif /* _LIBCLI_UTIL_TSTREAM_H_ */
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