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COMPONENTS/nfc/t4t_parser/tlv/nfc_t4t_tlv_block.c Normal file
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/**
* Copyright (c) 2016 - 2017, 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_config.h"
#if NFC_T4T_TLV_BLOCK_PARSER_ENABLED
#include <string.h>
#include "nfc_t4t_tlv_block.h"
#include "app_util.h"
#include "sdk_macros.h"
#include "nordic_common.h"
#define NRF_LOG_MODULE_NAME "NFC_T4T_TLV_BLOCK_PARSER"
#if NFC_T4T_TLV_BLOCK_PARSER_LOG_ENABLED
#define NRF_LOG_LEVEL NFC_T4T_TLV_BLOCK_PARSER_LOG_LEVEL
#define NRF_LOG_INFO_COLOR NFC_T4T_TLV_BLOCK_PARSER_INFO_COLOR
#else // NFC_T4T_TLV_BLOCK_PARSER_LOG_ENABLED
#define NRF_LOG_LEVEL 0
#endif // NFC_T4T_TLV_BLOCK_PARSER_LOG_ENABLED
#include "nrf_log.h"
#define TLV_TYPE_FIELD_LEN 1U ///< Length of a type field.
/**
* @brief TLV length field related defines.
*/
#define TLV_LEN_SHORT_FIELD_LEN 1U ///< Length of a short length field.
#define TLV_LEN_LONG_FIELD_LEN 3U ///< Length of an extended length field.
#define TLV_LEN_LONG_FORMAT_TOKEN 0xFF ///< Value indicating the use of an extended length field.
#define TLV_LEN_LONG_FORMAT_TOKEN_SIZE 1U ///< Size of long format token.
#define TLV_LEN_LONG_FORMAT_MIN_VALUE 0xFF ///< The minimal value of length field that can be used in long format.
/**
* @brief Possible sizes of TLV block.
*/
#define TLV_MIN_TL_FIELD_LEN (TLV_TYPE_FIELD_LEN + TLV_LEN_SHORT_FIELD_LEN)
#define TLV_MIN_LONG_FORMAT_TL_FIELD_LEN (TLV_TYPE_FIELD_LEN + TLV_LEN_LONG_FIELD_LEN)
#define TLV_MIN_VALUE_FIELD_SIZE 6U
/**
* @brief Field sizes that are present in TLV block.
*/
#define FILE_CONTROL_FILE_ID_FIELD_SIZE 2U
#define FILE_CONTROL_READ_ACCESS_FIELD_SIZE 1U
#define FILE_CONTROL_WRITE_ACCESS_FIELD_SIZE 1U
#define FILE_CONTROL_COMMON_FIELDS_SIZE (FILE_CONTROL_FILE_ID_FIELD_SIZE \
+ FILE_CONTROL_READ_ACCESS_FIELD_SIZE \
+ FILE_CONTROL_WRITE_ACCESS_FIELD_SIZE)
/**
* @brief Invalid values for File Identifier field.
*/
#define FILE_ID_INVALID_VALUE_0 0x0000
#define FILE_ID_INVALID_VALUE_1 0xE102
#define FILE_ID_INVALID_VALUE_2 0xE103
#define FILE_ID_INVALID_VALUE_3 0x3F00
#define FILE_ID_INVALID_VALUE_4 0x3FFF
#define FILE_ID_INVALID_VALUE_5 0xFFFF
/**
* @brief NDEF file related defines.
*/
#define NDEF_FILE_MAX_SIZE_FIELD_SIZE 2U
#define NDEF_FILE_MAX_SIZE_MIN_VAL 0x0005
#define NDEF_FILE_MAX_SIZE_MAX_VAL 0xFFFE
#define NDEF_FILE_CONTROL_TLV_LEN (FILE_CONTROL_COMMON_FIELDS_SIZE \
+ NDEF_FILE_MAX_SIZE_FIELD_SIZE)
/**
* @brief Proprietary file related defines.
*/
#define PROPRIETARY_FILE_MAX_SIZE_FIELD_SIZE 2U
#define PROPRIETARY_FILE_MAX_SIZE_MIN_VAL 0x0003
#define PROPRIETARY_FILE_MAX_SIZE_MAX_VAL 0xFFFE
#define PROPRIETARY_FILE_CONTROL_TLV_LEN (FILE_CONTROL_COMMON_FIELDS_SIZE \
+ PROPRIETARY_FILE_MAX_SIZE_FIELD_SIZE)
/**
* @brief Extended NDEF file related defines.
*/
#define EXTENDED_NDEF_FILE_MAX_SIZE_FIELD_SIZE 4U
#define EXTENDED_NDEF_FILE_MAX_SIZE_MIN_VAL 0x0000FFFF
#define EXTENDED_NDEF_FILE_MAX_SIZE_MAX_VAL 0xFFFFFFFE
#define EXTENDED_NDEF_FILE_CONTROL_TLV_LEN (FILE_CONTROL_COMMON_FIELDS_SIZE \
+ EXTENDED_NDEF_FILE_MAX_SIZE_FIELD_SIZE)
/**
* @brief Validates maximum file size field range. This field is present in every File Control TLV.
*/
#define NFC_T4T_FILE_CONTROL_MAX_SIZE_FIELD_RANGE_VERIFY(VALUE, MIN, MAX) \
if ( ( (VALUE) < (MIN) ) || ( (VALUE) > (MAX) ) ) \
{ \
return NRF_ERROR_INVALID_DATA; \
}
/**
* @brief Function for validating all possible types of File Control TLV.
*/
__STATIC_INLINE ret_code_t nfc_t4t_file_control_tl_validate(nfc_t4t_tlv_block_t * p_file_control_tlv)
{
switch (p_file_control_tlv->type)
{
case NDEF_FILE_CONTROL_TLV:
VERIFY_TRUE(p_file_control_tlv->length == NDEF_FILE_CONTROL_TLV_LEN,
NRF_ERROR_INVALID_DATA);
return NRF_SUCCESS;
case PROPRIETARY_FILE_CONTROL_TLV:
VERIFY_TRUE(p_file_control_tlv->length == PROPRIETARY_FILE_CONTROL_TLV_LEN,
NRF_ERROR_INVALID_DATA);
return NRF_SUCCESS;
case EXTENDED_NDEF_FILE_CONTROL_TLV:
VERIFY_TRUE(p_file_control_tlv->length == EXTENDED_NDEF_FILE_CONTROL_TLV_LEN,
NRF_ERROR_INVALID_DATA);
return NRF_SUCCESS;
default:
return NRF_ERROR_INVALID_DATA;
}
}
/**
* @brief Function for parsing value field of File Control TLV.
*/
static ret_code_t nfc_t4t_file_control_value_parse(nfc_t4t_tlv_block_t * p_file_control_tlv,
uint8_t * p_value_buff)
{
nfc_t4t_file_control_val_t * p_control_tlv_val;
// Handle File Identifier field.
p_control_tlv_val = &p_file_control_tlv->value;
p_control_tlv_val->file_id = uint16_big_decode(p_value_buff);
p_value_buff += FILE_CONTROL_FILE_ID_FIELD_SIZE;
switch (p_control_tlv_val->file_id)
{
case FILE_ID_INVALID_VALUE_0:
case FILE_ID_INVALID_VALUE_1:
case FILE_ID_INVALID_VALUE_2:
case FILE_ID_INVALID_VALUE_3:
case FILE_ID_INVALID_VALUE_4:
case FILE_ID_INVALID_VALUE_5:
return NRF_ERROR_INVALID_DATA;
default:
break;
}
// Handle Max file size field.
switch (p_file_control_tlv->type)
{
case NDEF_FILE_CONTROL_TLV:
p_control_tlv_val->max_file_size = uint16_big_decode(p_value_buff);
p_value_buff += NDEF_FILE_MAX_SIZE_FIELD_SIZE;
NFC_T4T_FILE_CONTROL_MAX_SIZE_FIELD_RANGE_VERIFY(p_control_tlv_val->max_file_size,
NDEF_FILE_MAX_SIZE_MIN_VAL,
NDEF_FILE_MAX_SIZE_MAX_VAL);
break;
case PROPRIETARY_FILE_CONTROL_TLV:
p_control_tlv_val->max_file_size = uint16_big_decode(p_value_buff);
p_value_buff += PROPRIETARY_FILE_MAX_SIZE_FIELD_SIZE;
NFC_T4T_FILE_CONTROL_MAX_SIZE_FIELD_RANGE_VERIFY(p_control_tlv_val->max_file_size,
PROPRIETARY_FILE_MAX_SIZE_MIN_VAL,
PROPRIETARY_FILE_MAX_SIZE_MAX_VAL);
break;
case EXTENDED_NDEF_FILE_CONTROL_TLV:
p_control_tlv_val->max_file_size = uint32_big_decode(p_value_buff);
p_value_buff += EXTENDED_NDEF_FILE_MAX_SIZE_FIELD_SIZE;
NFC_T4T_FILE_CONTROL_MAX_SIZE_FIELD_RANGE_VERIFY(p_control_tlv_val->max_file_size,
EXTENDED_NDEF_FILE_MAX_SIZE_MIN_VAL,
EXTENDED_NDEF_FILE_MAX_SIZE_MAX_VAL);
break;
}
// Handle read access condition field.
p_control_tlv_val->read_access = *p_value_buff;
p_value_buff += FILE_CONTROL_READ_ACCESS_FIELD_SIZE;
// Handle write access condition field.
p_control_tlv_val->write_access = *p_value_buff;
return NRF_SUCCESS;
}
ret_code_t nfc_t4t_file_control_tlv_parse(nfc_t4t_tlv_block_t * p_file_control_tlv,
uint8_t * p_raw_data,
uint16_t * p_len)
{
ret_code_t err_code;
uint8_t * p_offset = p_raw_data;
if (*p_len < TLV_MIN_TL_FIELD_LEN)
{
return NRF_ERROR_INVALID_LENGTH;
}
memset(p_file_control_tlv, 0, sizeof(nfc_t4t_tlv_block_t));
// Handle type field of TLV block.
p_file_control_tlv->type = *p_offset;
p_offset += TLV_TYPE_FIELD_LEN;
// Handle length field of TLV block.
if (*p_offset == TLV_LEN_LONG_FORMAT_TOKEN)
{
if (*p_len < TLV_MIN_LONG_FORMAT_TL_FIELD_LEN)
{
return NRF_ERROR_INVALID_LENGTH;
}
p_file_control_tlv->length = uint16_big_decode(p_offset + TLV_LEN_LONG_FORMAT_TOKEN_SIZE);
p_offset += TLV_LEN_LONG_FIELD_LEN;
if (p_file_control_tlv->length < TLV_LEN_LONG_FORMAT_MIN_VALUE)
{
return NRF_ERROR_INVALID_DATA;
}
}
else
{
p_file_control_tlv->length = *p_offset;
p_offset += TLV_LEN_SHORT_FIELD_LEN;
}
// Calculate the total TLV block size.
uint16_t tlv_block_len = (p_offset - p_raw_data) + p_file_control_tlv->length;
if (*p_len < tlv_block_len)
{
return NRF_ERROR_INVALID_LENGTH;
}
*p_len = tlv_block_len;
// Validate if type and length fields contain values supported by Type 4 Tag.
err_code = nfc_t4t_file_control_tl_validate(p_file_control_tlv);
VERIFY_SUCCESS(err_code);
// Handle value field of TLV block.
err_code = nfc_t4t_file_control_value_parse(p_file_control_tlv, p_offset);
return err_code;
}
void nfc_t4t_file_control_tlv_printout(uint8_t num, nfc_t4t_tlv_block_t * p_t4t_tlv_block)
{
NRF_LOG_INFO("%d file Control TLV\r\n", num);
switch (p_t4t_tlv_block->type)
{
case NDEF_FILE_CONTROL_TLV:
NRF_LOG_INFO("Type: NDEF File Control (0x%02x)\r\n", p_t4t_tlv_block->type);
break;
case PROPRIETARY_FILE_CONTROL_TLV:
NRF_LOG_INFO("Type: Proprietary File Control (0x%02x)\r\n", p_t4t_tlv_block->type);
break;
case EXTENDED_NDEF_FILE_CONTROL_TLV:
NRF_LOG_INFO("Type: Extended NDEF File Control (0x%02x)\r\n", p_t4t_tlv_block->type);
break;
default:
NRF_LOG_INFO("Type: Unknown (0x%02x)\r\n", p_t4t_tlv_block->type);
}
NRF_LOG_INFO("Length (in bytes): %d\r\n", p_t4t_tlv_block->length);
nfc_t4t_file_control_val_t * p_tlv_val = &p_t4t_tlv_block->value;
NRF_LOG_INFO("File Identifier: 0x%04X \r\n", p_tlv_val->file_id);
NRF_LOG_INFO("Maximum file size: %d \r\n", p_tlv_val->max_file_size);
NRF_LOG_INFO("Read access condition: 0x%02X \r\n", p_tlv_val->read_access);
NRF_LOG_INFO("Write access condition: 0x%02x \r\n\r\n", p_tlv_val->write_access);
if (p_tlv_val->file.p_content != NULL)
{
NRF_LOG_INFO("NDEF file content present. Length: %d \r\n", p_tlv_val->file.len);
NRF_LOG_HEXDUMP_INFO(p_tlv_val->file.p_content, p_tlv_val->file.len);
}
else
{
NRF_LOG_INFO("NDEF file content is not present \r\n");
}
NRF_LOG_RAW_INFO("\r\n");
}
#endif // NFC_T4T_TLV_BLOCK_PARSER_ENABLED

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COMPONENTS/nfc/t4t_parser/tlv/nfc_t4t_tlv_block.h Normal file
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/**
* Copyright (c) 2016 - 2017, 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.
*
*/
#ifndef NFC_T4T_TLV_BLOCK_H__
#define NFC_T4T_TLV_BLOCK_H__
/**@file
*
* @defgroup nfc_t4t_tlv_block File Control TLV block parser for Type 4 Tag.
* @{
* @ingroup nfc_t4t_cc_file
*
* @brief File Control TLV block parser for Type 4 Tag (T4T).
*
*/
#include <stdint.h>
#include "sdk_errors.h"
#ifdef __cplusplus
extern "C" {
#endif
#define CONTROL_FILE_READ_ACCESS_GRANTED 0x00 ///< Read access granted without any security.
/**
* @name Possible values of file write access condition field.
* @{
*/
#define CONTROL_FILE_WRITE_ACCESS_GRANTED 0x00 ///< Write access granted without any security.
#define CONTROL_FILE_WRITE_ACCESS_DISABLED 0xFF ///< No write access granted without any security (read-only).
/** @} */
/**
* @brief Possible types of File Control TLV for Type 4 Tag.
*/
typedef enum
{
NDEF_FILE_CONTROL_TLV = 0x04, ///< Control information concerning the EF file with short NDEF message.
PROPRIETARY_FILE_CONTROL_TLV = 0x05, ///< Control information concerning the Proprietary file with proprietary data.
EXTENDED_NDEF_FILE_CONTROL_TLV = 0x06 ///< Control information concerning the EF file with long NDEF message.
} nfc_t4t_tlv_block_types_t;
/**
* @brief File content descriptor.
*/
typedef struct
{
uint8_t * p_content; ///< Pointer to the file content.
uint16_t len; ///< Length of file content.
} nfc_t4t_file_t;
/**
* @brief Extended NDEF/NDEF/Proprietary File Control Value descriptor.
*/
typedef struct
{
nfc_t4t_file_t file; ///< Pointer to the described file content.
uint32_t max_file_size; ///< Maximum size (in bytes) of the file.
uint16_t file_id; ///< File identifier.
uint8_t read_access; ///< File read access condition.
uint8_t write_access; ///< File write access condition.
} nfc_t4t_file_control_val_t;
/**
* @brief File Control TLV block descriptor.
*/
typedef struct
{
nfc_t4t_file_control_val_t value; ///< Value field descriptor.
uint16_t length; ///< Length of the value field.
uint8_t type; ///< Type of the TLV block.
} nfc_t4t_tlv_block_t;
/**
* @brief Function for parsing raw data of File Control TLV, read from a Type 4 Tag.
*
* This function parses raw data of File Control TLV and stores the results in its
* descriptor.
*
* @param[in,out] p_file_control_tlv Pointer to the File Control TLV that will be filled with
* parsed data.
* @param[in] p_raw_data Pointer to the buffer with raw TLV data.
* @param[in,out] p_len In: Buffer length with TLV blocks.
* Out: Total length of first identified TLV within the buffer.
*
* @retval NRF_SUCCESS If operation was successful.
* @retval NRF_ERROR_INVALID_LENGTH If provided buffer length is too small for TLV block.
* @retval NRF_ERROR_INVALID_DATA If any TLV block field contains invalid data.
*/
ret_code_t nfc_t4t_file_control_tlv_parse(nfc_t4t_tlv_block_t * p_file_control_tlv,
uint8_t * p_raw_data,
uint16_t * p_len);
/**
* @brief Function for printing TLV block descriptor.
*
* This function prints TLV block descriptor.
*
* @param[in] num TLV block number.
* @param[in] p_t4t_tlv_block Pointer to the TLV block descriptor.
*/
void nfc_t4t_file_control_tlv_printout(uint8_t num, nfc_t4t_tlv_block_t * p_t4t_tlv_block);
/** @} */
#ifdef __cplusplus
}
#endif
#endif /* NFC_T4T_TLV_BLOCK_H__ */