lwpa_rootlayerpdu.h

/******************************************************************************
 * Copyright 2018 ETC Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************
 * This file is a part of lwpa. For more information, go to:
 * https://github.com/ETCLabs/lwpa
 ******************************************************************************/
 
/* rootlayerpdu.h: Functions to parse or pack a Root Layer PDU block (as
 * defined in ANSI E1.17) and its associated preambles. */
#ifndef _LWPA_ROOTLAYERPDU_H_
#define _LWPA_ROOTLAYERPDU_H_
 
#include <stddef.h>
#include "lwpa_int.h"
#include "lwpa_bool.h"
#include "lwpa_cid.h"
#include "acn_prot.h"
#include "lwpa_pdu.h"
 
#define ACN_TCP_PREAMBLE_SIZE 16
#define ACN_UDP_PREAMBLE_SIZE 16
#define RLP_HEADER_SIZE_NORMAL_LEN 22
#define RLP_HEADER_SIZE_EXT_LEN 23
 
#define VECTOR_ROOT_SDT ACN_PROTOCOL_SDT
#define VECTOR_ROOT_DRAFT_E131_DATA ACN_PROTOCOL_DRAFT_E131_DATA
#define VECTOR_ROOT_E131_DATA ACN_PROTOCOL_E131_DATA
#define VECTOR_ROOT_E131_EXTENDED ACN_PROTOCOL_E131_EXTENDED
#define VECTOR_ROOT_LLRP ACN_PROTOCOL_LLRP
#define VECTOR_ROOT_BROKER ACN_PROTOCOL_BROKER
#define VECTOR_ROOT_RPT ACN_PROTOCOL_RPT
#define VECTOR_ROOT_EPT ACN_PROTOCOL_EPT
typedef struct TcpPreamble
{
  const uint8_t *rlp_block;
  size_t rlp_block_len;
} TcpPreamble;
 
typedef struct UdpPreamble
{
  const uint8_t *rlp_block;
  size_t rlp_block_len;
} UdpPreamble;
 
typedef struct RootLayerPdu
{
  LwpaCid sender_cid;
  uint32_t vector;
  const uint8_t *pdata;
  size_t datalen;
} RootLayerPdu;
 
#ifdef __cplusplus
extern "C" {
#endif
 
bool parse_tcp_preamble(const uint8_t *buf, size_t buflen, TcpPreamble *preamble);
bool parse_udp_preamble(const uint8_t *buf, size_t buflen, UdpPreamble *preamble);
bool parse_root_layer_header(const uint8_t *buf, size_t buflen, RootLayerPdu *pdu, RootLayerPdu *last_pdu);
bool parse_root_layer_pdu(const uint8_t *buf, size_t buflen, RootLayerPdu *pdu, LwpaPdu *last_pdu);
 
size_t pack_tcp_preamble(uint8_t *buf, size_t buflen, size_t rlp_block_len);
size_t pack_udp_preamble(uint8_t *buf, size_t buflen);
size_t root_layer_buf_size(const RootLayerPdu *pdu_block, size_t num_pdus);
size_t pack_root_layer_header(uint8_t *buf, size_t buflen, const RootLayerPdu *pdu);
size_t pack_root_layer_block(uint8_t *buf, size_t buflen, const RootLayerPdu *pdu_block, size_t num_pdus);
 
#ifdef __cplusplus
}
#endif
 
#endif /* _LWPA_ROOTLAYERPDU_H_ */