diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/ndef/conn_hand_parser/ac_rec_parser/nfc_ac_rec_parser.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/ndef/conn_hand_parser/ac_rec_parser/nfc_ac_rec_parser.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/ndef/conn_hand_parser/ac_rec_parser/nfc_ac_rec_parser.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/ndef/conn_hand_parser/ac_rec_parser/nfc_ac_rec_parser.c new file mode 100644 index 0000000..58934c1 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/ndef/conn_hand_parser/ac_rec_parser/nfc_ac_rec_parser.c @@ -0,0 +1,205 @@ +/** + * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA + * + * 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, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, 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 Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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. + * + */ +#include "sdk_common.h" +#if NRF_MODULE_ENABLED(NFC_AC_REC_PARSER) +#include "nfc_ac_rec_parser.h" +#include "sdk_macros.h" + +/** + * @brief Function for parsing Data Reference field inside Alternative Carrier record payload. + * + * This function parses Data Reference field inside Alternative Carrier record payload and extracts + * its descriptor. + * + * @param[in,out] pp_buff Pointer to pointer to the remaining payload data. + * @param[in,out] p_len Pointer to the length of remaining payload data. + * @param[in,out] p_ref_field Pointer to the structure that will be used to hold + * parsed data. + * + * @retval NRF_SUCCESS If the function completed successfully. + * @retval NRF_ERROR_NULL If provided buffer for Data Reference in \p p_ref_field is + * null. + * @retval NRF_ERROR_NO_MEM If the buffer provided for Data Reference in \p p_ref_field + * does not have enough space to store it. + * @retval NRF_ERROR_INVALID_LENGTH If Data Reference length exceeds record payload. + */ +static ret_code_t ac_rec_reference_field_parse(uint8_t ** const pp_buff, + uint32_t * const p_len, + nfc_ac_rec_data_ref_t * const p_ref_field) +{ + if (p_ref_field->length < **pp_buff) + { + return NRF_ERROR_NO_MEM; + } + p_ref_field->length = **pp_buff; + *pp_buff += AC_REC_DATA_REF_LEN_SIZE; + (*p_len) -= AC_REC_DATA_REF_LEN_SIZE; + + if (*p_len < p_ref_field->length) + { + return NRF_ERROR_INVALID_LENGTH; + } + VERIFY_PARAM_NOT_NULL(p_ref_field->p_data); + memcpy( p_ref_field->p_data, + *pp_buff, + p_ref_field->length ); + *pp_buff += p_ref_field->length; + (*p_len) -= p_ref_field->length; + + return NRF_SUCCESS; +} + +/** + * @brief Function for parsing Alternative Carrier record payload. + * + * This function parses Alternative Carrier record payload and extracts its payload descriptor. + * + * @param[in] p_buff Pointer to the record payload. + * @param[in] p_len Pointer to the record payload length. + * @param[in,out] p_ac_rec_payload_data Pointer to the structure that will be used to hold + * parsed data. + * + * @retval NRF_SUCCESS If the function completed successfully. + * @retval NRF_ERROR_NULL If any provided arguments or any needed buffers stored in + * \p p_ac_rec_payload_data are nulls. + * @retval NRF_ERROR_NO_MEM If any from provided buffers does not have enough space + * to store its data. + * @retval NRF_ERROR_INVALID_LENGTH If any length field exceeds record payload. + * @retval NRF_ERROR_INVALID_PARAM If Carrier Power State field has incorrect value. + */ +static ret_code_t nfc_ac_payload_parse(uint8_t * p_buff, + uint32_t * const p_len, + nfc_ac_rec_payload_desc_t * const p_ac_rec_payload_data) +{ + if ( (p_buff == NULL) || (p_len == NULL) || (p_ac_rec_payload_data == NULL) ) + { + return NRF_ERROR_NULL; + } + + if (*p_len < AC_REC_CPS_BYTE_SIZE + AC_REC_DATA_REF_LEN_SIZE + AC_REC_AUX_DATA_REF_COUNT_SIZE) + { + return NRF_ERROR_INVALID_LENGTH; + } + + // Copy CPS to ac record payload descriptor. + if (*p_buff & ~NFC_AC_CPS_MASK) + { + return NRF_ERROR_INVALID_PARAM; + } + + p_ac_rec_payload_data->cps = (nfc_ac_rec_cps_t) *p_buff; + p_buff += AC_REC_CPS_BYTE_SIZE; + (*p_len) -= AC_REC_CPS_BYTE_SIZE; + + // Copy Carrier Data Reference to ac record payload descriptor. + ret_code_t err_code = ac_rec_reference_field_parse(&p_buff, + p_len, + &p_ac_rec_payload_data->carrier_data_ref); + VERIFY_SUCCESS(err_code); + + // Copy Auxiliary Data Reference to ac record payload descriptor. + if ( p_ac_rec_payload_data->aux_data_ref_count < *p_buff) + { + return NRF_ERROR_NO_MEM; + } + p_ac_rec_payload_data->aux_data_ref_count = *p_buff; + p_buff += AC_REC_AUX_DATA_REF_COUNT_SIZE; + (*p_len) -= AC_REC_AUX_DATA_REF_COUNT_SIZE; + + if (p_ac_rec_payload_data->aux_data_ref_count != 0) + { + VERIFY_PARAM_NOT_NULL(p_ac_rec_payload_data->p_aux_data_ref); + } + + for (uint8_t i = 0; i < p_ac_rec_payload_data->aux_data_ref_count; i++) + { + err_code = ac_rec_reference_field_parse(&p_buff, + p_len, + &(p_ac_rec_payload_data->p_aux_data_ref[i])); + VERIFY_SUCCESS(err_code); + } + + // Check if all payload data were parsed. + if (*p_len != 0) + { + return NRF_ERROR_INVALID_LENGTH; + } + + return NRF_SUCCESS; +} + +ret_code_t nfc_ac_rec_parse(nfc_ndef_record_desc_t const * const p_rec_desc, + nfc_ac_rec_payload_desc_t * const p_ac_rec_payload_data) +{ + ret_code_t err_code; + + if (p_rec_desc->tnf != TNF_WELL_KNOWN) + { + return NRF_ERROR_INVALID_DATA; + } + + if (p_rec_desc->type_length != sizeof(nfc_ac_rec_type_field)) + { + return NRF_ERROR_INVALID_DATA; + } + + if (memcmp(p_rec_desc->p_type, nfc_ac_rec_type_field, sizeof(nfc_ac_rec_type_field)) != 0) + { + return NRF_ERROR_INVALID_DATA; + } + + if (p_rec_desc->payload_constructor != (p_payload_constructor_t) nfc_ndef_bin_payload_memcopy) + { + return NRF_ERROR_NOT_SUPPORTED; + } + + uint8_t const * p_payload = + ((nfc_ndef_bin_payload_desc_t *)(p_rec_desc->p_payload_descriptor))->p_payload; + uint32_t payload_length = + ((nfc_ndef_bin_payload_desc_t *)(p_rec_desc->p_payload_descriptor))->payload_length; + + err_code = nfc_ac_payload_parse((uint8_t *) p_payload, + &payload_length, + p_ac_rec_payload_data); + + return err_code; +} + +#endif // NRF_MODULE_ENABLED(NFC_AC_REC_PARSER) |