5f7f8ffe2a
- New mifare_classic_first_sector_block(), mifare_classic_last_sector_block() functions to ease detection of sectors boundaries; - New unit tests for mifare_classic_first_sector_block() and mifare_classic_last_sector_block(); - Start to update the API for consistently using blocks and not mixing blocks and sectors with mifare_classic_*() functions; - Update the mifare-classic-format(1) example to handle MIFARE Classic 1k and 4k. Many thanks to Johann Dantant from SpringCard for giving me MIFARE Classic 4k cards.
99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/*
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* Copyright (C) 2010, Romain Tartiere, Romuald Conty.
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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* $Id$
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*/
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#ifndef __FREEFARE_INTERNAL_H__
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#define __FREEFARE_INTERNAL_H__
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struct mad_sector_0x00;
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struct mad_sector_0x10;
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void crc8 (uint8_t *crc, const uint8_t value);
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MifareTag mifare_classic_tag_new (void);
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void mifare_classic_tag_free (MifareTag tag);
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MifareTag mifare_ultralight_tag_new (void);
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void mifare_ultralight_tag_free (MifareTag tag);
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uint8_t sector_0x00_crc8 (Mad mad);
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uint8_t sector_0x10_crc8 (Mad mad);
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MifareClassicBlockNumber mifare_classic_first_sector_block (MifareClassicBlockNumber block);
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MifareClassicBlockNumber mifare_classic_last_sector_block (MifareClassicBlockNumber block);
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#define MIFARE_ULTRALIGHT_PAGE_COUNT 16
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/*
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* This structure is common to all supported MIFARE targets but shall not be
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* used directly (it's some kind of abstract class). All members in this
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* structure are initialized by freefare_get_tags().
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*
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* Extra members in derived classes are initialized in the correpsonding
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* mifare_*_connect() function.
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*/
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struct mifare_tag {
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nfc_device_t *device;
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nfc_iso14443a_info_t info;
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enum mifare_tag_type type;
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int active;
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};
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struct mifare_classic_tag {
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struct mifare_tag __tag;
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MifareClassicKeyType last_authentication_key_type;
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/*
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* The following block numbers are on 2 bytes in order to use invalid
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* address and avoid false cache hit with inconsistent data.
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*/
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struct {
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int16_t sector_trailer_block_number;
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uint16_t sector_access_bits;
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int16_t block_number;
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uint8_t block_access_bits;
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} cached_access_bits;
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};
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struct mifare_ultralight_tag {
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struct mifare_tag __tag;
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/* mifare_ultralight_read() reads 4 pages at a time (wrapping) */
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MifareUltralightPage cache[MIFARE_ULTRALIGHT_PAGE_COUNT + 3];
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uint8_t cached_pages[MIFARE_ULTRALIGHT_PAGE_COUNT];
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};
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/*
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* MifareTag assertion macros
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*
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* This macros provide a simple and unified way to perform various tests at the
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* beginning of the different targets functions.
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*/
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#define ASSERT_ACTIVE(tag) do { if (!tag->active) return errno = ENXIO, -1; } while (0)
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#define ASSERT_INACTIVE(tag) do { if (tag->active) return errno = ENXIO, -1; } while (0)
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#define ASSERT_MIFARE_ULTRALIGHT(tag) do { if (tag->type != ULTRALIGHT) return errno = ENODEV, -1; } while (0)
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#define ASSERT_MIFARE_CLASSIC(tag) do { if ((tag->type != CLASSIC_1K) && (tag->type != CLASSIC_4K)) return errno = ENODEV, -1; } while (0)
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/*
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* MifareTag cast macros
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*
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* This macros are intended to provide a convenient way to cast abstract
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* MifareTag structures to concrete Tags (e.g. MIFARE Classic tag).
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*/
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#define MIFARE_CLASSIC(tag) ((struct mifare_classic_tag *) tag)
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#define MIFARE_ULTRALIGHT(tag) ((struct mifare_ultralight_tag *) tag)
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#endif /* !__FREEFARE_INTERNAL_H__ */
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