108 lines
4.3 KiB
C
108 lines
4.3 KiB
C
/**
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* Copyright (c) 2015 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include "sdk_common.h"
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#if NRF_MODULE_ENABLED(NFC_NDEF_TEXT_RECORD)
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#include <string.h>
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#include "nfc_text_rec.h"
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#include "nrf_error.h"
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#define TEXT_REC_STATUS_SIZE 1 ///< Size of the status.
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#define TEXT_REC_STATUS_UTF_POS 7 ///< Position of a character encoding type.
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#define TEXT_REC_RESERVED_POS 6 ///< Reserved position.
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const uint8_t nfc_text_rec_type_field[] = {'T'};
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/**
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* @brief Function for calculating payload size.
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*/
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__STATIC_INLINE uint32_t nfc_text_rec_payload_size_get(nfc_text_rec_payload_desc_t * p_nfc_rec_text_payload_desc)
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{
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return (TEXT_REC_STATUS_SIZE
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+ p_nfc_rec_text_payload_desc->lang_code_len
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+ p_nfc_rec_text_payload_desc->data_len);
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}
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ret_code_t nfc_text_rec_payload_constructor(nfc_text_rec_payload_desc_t * p_nfc_rec_text_payload_desc,
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uint8_t * p_buff,
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uint32_t * p_len)
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{
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if ((p_nfc_rec_text_payload_desc->lang_code_len == 0)
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|| (p_nfc_rec_text_payload_desc->lang_code_len & (1 << TEXT_REC_RESERVED_POS))
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|| (p_nfc_rec_text_payload_desc->lang_code_len & (1 << TEXT_REC_STATUS_UTF_POS))
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|| (p_nfc_rec_text_payload_desc->p_lang_code == NULL)
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|| (p_nfc_rec_text_payload_desc->data_len == 0)
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|| (p_nfc_rec_text_payload_desc->p_data == NULL)
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|| (p_len == NULL))
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{
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return NRF_ERROR_INVALID_PARAM;
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}
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uint32_t payload_size = nfc_text_rec_payload_size_get(p_nfc_rec_text_payload_desc);
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if (p_buff != NULL)
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{
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if (payload_size > *p_len)
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{
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return NRF_ERROR_NO_MEM;
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}
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*p_buff = (p_nfc_rec_text_payload_desc->lang_code_len
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+ (p_nfc_rec_text_payload_desc->utf << TEXT_REC_STATUS_UTF_POS));
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p_buff += TEXT_REC_STATUS_SIZE;
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memcpy(p_buff,
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p_nfc_rec_text_payload_desc->p_lang_code,
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p_nfc_rec_text_payload_desc->lang_code_len);
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p_buff += p_nfc_rec_text_payload_desc->lang_code_len;
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memcpy(p_buff,
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p_nfc_rec_text_payload_desc->p_data,
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p_nfc_rec_text_payload_desc->data_len);
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}
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*p_len = payload_size;
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return NRF_SUCCESS;
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}
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#endif // NRF_MODULE_ENABLED(NFC_NDEF_TEXT_RECORD)
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