u2f_io.c

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/*******************************************************************************
 *   Ledger Nano S - Secure firmware
 *   (c) 2022 Ledger
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 ********************************************************************************/
 
#include <stdint.h>
#include <string.h>
 
#ifdef HAVE_IO_U2F
 
#include "os.h"
#include "u2f_service.h"
#include "u2f_transport.h"
#include "u2f_processing.h"
#include "u2f_impl.h"
 
#include "os_io_seproxyhal.h"
 
#ifdef HAVE_BLE
#include "ledger_ble.h"
#endif
 
void u2f_io_send(uint8_t *buffer, uint16_t length, u2f_transport_media_t media)
{
    if (media == U2F_MEDIA_USB) {
        memmove(G_io_usb_ep_buffer, buffer, length);
        // wipe the remaining to avoid :
        // 1/ data leaks
        // 2/ invalid junk
        memset(G_io_usb_ep_buffer + length, 0, sizeof(G_io_usb_ep_buffer) - length);
    }
    switch (media) {
        case U2F_MEDIA_USB:
            io_usb_send_ep(U2F_EPIN_ADDR, G_io_usb_ep_buffer, USB_SEGMENT_SIZE, 0);
            break;
#ifdef HAVE_BLE
        case U2F_MEDIA_BLE:
            LEDGER_BLE_send(buffer, length);
            break;
#endif
        default:
            PRINTF("Request to send on unsupported media %d\n", media);
            break;
    }
}
 
#endif  // HAVE_IO_U2F