osd-contiki/apps/oma-lwm2m/oma-tlv-writer.c

90 lines
3.4 KiB
C
Raw Normal View History

/*
* Copyright (c) 2015, Yanzi Networks AB.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \addtogroup oma-lwm2m
* @{
*
*/
/**
* \file
* Implementation of the Contiki OMA LWM2M TLV writer
* \author
* Joakim Eriksson <joakime@sics.se>
* Niclas Finne <nfi@sics.se>
*/
#include "lwm2m-object.h"
#include "oma-tlv.h"
/*---------------------------------------------------------------------------*/
static size_t
write_boolean_tlv(const lwm2m_context_t *ctx, uint8_t *outbuf, size_t outlen,
int value)
{
return oma_tlv_write_int32(ctx->resource_id, value != 0 ? 1 : 0,
outbuf, outlen);
}
/*---------------------------------------------------------------------------*/
static size_t
write_int_tlv(const lwm2m_context_t *ctx, uint8_t *outbuf, size_t outlen,
int32_t value)
{
return oma_tlv_write_int32(ctx->resource_id, value, outbuf, outlen);
}
/*---------------------------------------------------------------------------*/
static size_t
write_float32fix_tlv(const lwm2m_context_t *ctx, uint8_t *outbuf,
size_t outlen, int32_t value, int bits)
{
return oma_tlv_write_float32(ctx->resource_id, value, bits, outbuf, outlen);
}
/*---------------------------------------------------------------------------*/
static size_t
write_string_tlv(const lwm2m_context_t *ctx, uint8_t *outbuf, size_t outlen,
const char *value, size_t stringlen)
{
oma_tlv_t tlv;
tlv.type = OMA_TLV_TYPE_RESOURCE;
tlv.value = (uint8_t *) value;
tlv.length = (uint32_t) stringlen;
tlv.id = ctx->resource_id;
return oma_tlv_write(&tlv, outbuf, outlen);
}
/*---------------------------------------------------------------------------*/
const lwm2m_writer_t oma_tlv_writer = {
write_int_tlv,
write_string_tlv,
write_float32fix_tlv,
write_boolean_tlv
};
/*---------------------------------------------------------------------------*/
/** @} */