104 lines
		
	
	
		
			3.6 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			104 lines
		
	
	
		
			3.6 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
#include "nfc_supported_card.h"
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#include "all_in_one.h"
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#include <gui/modules/widget.h>
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#include <nfc_worker_i.h>
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#include "furi_hal.h"
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#define ALL_IN_ONE_LAYOUT_UNKNOWN 0
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#define ALL_IN_ONE_LAYOUT_A 1
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#define ALL_IN_ONE_LAYOUT_D 2
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#define ALL_IN_ONE_LAYOUT_E2 3
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#define ALL_IN_ONE_LAYOUT_E3 4
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#define ALL_IN_ONE_LAYOUT_E5 5
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#define ALL_IN_ONE_LAYOUT_2 6
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uint8_t all_in_one_get_layout(NfcDeviceData* dev_data) {
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    // I absolutely hate what's about to happen here.
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    // Switch on the second half of the third byte of page 5
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    FURI_LOG_I("all_in_one", "Layout byte: %02x", dev_data->mf_ul_data.data[(4 * 5) + 2]);
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    FURI_LOG_I(
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        "all_in_one", "Layout half-byte: %02x", dev_data->mf_ul_data.data[(4 * 5) + 3] & 0x0F);
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    switch(dev_data->mf_ul_data.data[(4 * 5) + 2] & 0x0F) {
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    // If it is A, the layout type is a type A layout
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    case 0x0A:
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        return ALL_IN_ONE_LAYOUT_A;
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    case 0x0D:
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        return ALL_IN_ONE_LAYOUT_D;
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    case 0x02:
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        return ALL_IN_ONE_LAYOUT_2;
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    default:
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        FURI_LOG_I(
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            "all_in_one",
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            "Unknown layout type: %d",
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            dev_data->mf_ul_data.data[(4 * 5) + 2] & 0x0F);
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        return ALL_IN_ONE_LAYOUT_UNKNOWN;
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    }
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}
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bool all_in_one_parser_verify(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx) {
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    UNUSED(nfc_worker);
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    // If this is a all_in_one pass, first 2 bytes of page 4 are 0x45 0xD9
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    MfUltralightReader reader = {};
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    MfUltralightData data = {};
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    if(!mf_ul_read_card(tx_rx, &reader, &data)) {
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        return false;
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    } else {
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        if(data.data[4 * 4] == 0x45 && data.data[4 * 4 + 1] == 0xD9) {
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            FURI_LOG_I("all_in_one", "Pass verified");
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            return true;
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        }
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    }
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    return false;
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}
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bool all_in_one_parser_read(NfcWorker* nfc_worker, FuriHalNfcTxRxContext* tx_rx) {
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    MfUltralightReader reader = {};
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    MfUltralightData data = {};
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    if(!mf_ul_read_card(tx_rx, &reader, &data)) {
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        return false;
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    } else {
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        memcpy(&nfc_worker->dev_data->mf_ul_data, &data, sizeof(data));
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        FURI_LOG_I("all_in_one", "Card read");
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        return true;
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    }
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}
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bool all_in_one_parser_parse(NfcDeviceData* dev_data) {
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    if(dev_data->mf_ul_data.data[4 * 4] != 0x45 || dev_data->mf_ul_data.data[4 * 4 + 1] != 0xD9) {
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        FURI_LOG_I("all_in_one", "Pass not verified");
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        return false;
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    }
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    uint8_t ride_count = 0;
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    uint32_t serial = 0;
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    if(all_in_one_get_layout(dev_data) == ALL_IN_ONE_LAYOUT_A) {
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        // If the layout is A then the ride count is stored in the first byte of page 8
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        ride_count = dev_data->mf_ul_data.data[4 * 8];
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    } else if(all_in_one_get_layout(dev_data) == ALL_IN_ONE_LAYOUT_D) {
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        // If the layout is D, the ride count is stored in the second byte of page 9
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        ride_count = dev_data->mf_ul_data.data[4 * 9 + 1];
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    } else {
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        FURI_LOG_I("all_in_one", "Unknown layout: %d", all_in_one_get_layout(dev_data));
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        ride_count = 137;
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    }
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    // I hate this with a burning passion.
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    // The number starts at the second half of the third byte on page 4, and is 32 bits long
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    // So we get the second half of the third byte, then bytes 4-6, and then the first half of the 7th byte
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    // B8 17 A2 A4 BD becomes 81 7A 2A 4B
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    serial =
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        (dev_data->mf_ul_data.data[4 * 4 + 2] & 0x0F) << 28 |
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        dev_data->mf_ul_data.data[4 * 4 + 3] << 20 | dev_data->mf_ul_data.data[4 * 4 + 4] << 12 |
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        dev_data->mf_ul_data.data[4 * 4 + 5] << 4 | (dev_data->mf_ul_data.data[4 * 4 + 6] >> 4);
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    // Format string for rides count
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    furi_string_printf(
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        dev_data->parsed_data, "\e#All-In-One\nNumber: %lu\nRides left: %u", serial, ride_count);
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    return true;
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}
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