segatools/cardhook/_com12.c

#include <windows.h>

#include <assert.h>
#include <stdint.h>

#include "aimeio/aimeio.h"

#include "board/sg-led.h"
#include "board/sg-nfc.h"

#include "cardhook/_com12.h"

#include "hook/iohook.h"

#include "hooklib/uart.h"

#include "util/dprintf.h"
#include "util/dump.h"

static HRESULT com12_handle_irp(struct irp *irp);
static HRESULT com12_handle_irp_locked(struct irp *irp);

static HRESULT com12_mifare_poll(void *ctx, uint32_t *uid);
static HRESULT com12_mifare_read_luid(
        void *ctx,
        uint32_t uid,
        uint8_t *luid,
        size_t nbytes);
static void com12_led_set_color(void *ctx, uint8_t r, uint8_t g, uint8_t b);

static const struct sg_nfc_ops com12_nfc_ops = {
    .mifare_poll        = com12_mifare_poll,
    .mifare_read_luid   = com12_mifare_read_luid,
};

static const struct sg_led_ops com12_led_ops = {
    .set_color          = com12_led_set_color,
};

static struct sg_nfc com12_nfc;
static struct sg_led com12_led;

static CRITICAL_SECTION com12_lock;
static struct uart com12_uart;
static uint8_t com12_written_bytes[520];
static uint8_t com12_readable_bytes[520];

HRESULT com12_hook_init(void)
{
    HRESULT hr;

    hr = aime_io_init();

    if (FAILED(hr)) {
        return hr;
    }

    sg_nfc_init(&com12_nfc, 0x00, &com12_nfc_ops, NULL);
    sg_led_init(&com12_led, 0x08, &com12_led_ops, NULL);

    InitializeCriticalSection(&com12_lock);

    uart_init(&com12_uart, 12);
    com12_uart.written.bytes = com12_written_bytes;
    com12_uart.written.nbytes = sizeof(com12_written_bytes);
    com12_uart.readable.bytes = com12_readable_bytes;
    com12_uart.readable.nbytes = sizeof(com12_readable_bytes);

    return iohook_push_handler(com12_handle_irp);
}

static HRESULT com12_handle_irp(struct irp *irp)
{
    HRESULT hr;

    assert(irp != NULL);

    if (!uart_match_irp(&com12_uart, irp)) {
        return iohook_invoke_next(irp);
    }

    EnterCriticalSection(&com12_lock);
    hr = com12_handle_irp_locked(irp);
    LeaveCriticalSection(&com12_lock);

    return hr;
}

static HRESULT com12_handle_irp_locked(struct irp *irp)
{
    HRESULT hr;

#if 0
    if (irp->op == IRP_OP_WRITE) {
        dprintf("WRITE:\n");
        dump_const_iobuf(&irp->write);
    }
#endif

#if 0
    if (irp->op == IRP_OP_READ) {
        dprintf("READ:\n");
        dump_iobuf(&com12_uart.readable);
    }
#endif

    hr = uart_handle_irp(&com12_uart, irp);

    if (FAILED(hr) || irp->op != IRP_OP_WRITE) {
        return hr;
    }

    sg_nfc_transact(
            &com12_nfc,
            &com12_uart.readable,
            com12_uart.written.bytes,
            com12_uart.written.pos);

    sg_led_transact(
            &com12_led,
            &com12_uart.readable,
            com12_uart.written.bytes,
            com12_uart.written.pos);

    com12_uart.written.pos = 0;

    return hr;
}

static HRESULT com12_mifare_poll(void *ctx, uint32_t *uid)
{
    return aime_io_mifare_poll(0, uid);
}

static HRESULT com12_mifare_read_luid(
        void *ctx,
        uint32_t uid,
        uint8_t *luid,
        size_t luid_size)
{
    return aime_io_mifare_read_luid(0, uid, luid, luid_size);
}

static void com12_led_set_color(void *ctx, uint8_t r, uint8_t g, uint8_t b)
{
    aime_io_led_set_color(0, r, g, b);
}