Commit 2f8f916b authored by Alon Levy's avatar Alon Levy
Browse files

dev-smartcard-reader: copy atr protocol to ccid parameters 



Adds todos.

Signed-off-by: default avatarAlon Levy <alevy@redhat.com>
Reviewed-by: default avatarMarc-André Lureau <mlureau@redhat.com>
parent d7d218ef

hw/usb/dev-smartcard-reader.c

+45 −0
Original line number Diff line number Diff line
@@ -833,14 +833,59 @@ static void ccid_write_data_block_answer(USBCCIDState *s, 
    ccid_write_data_block(s, slot, seq, data, len);

}



static uint8_t atr_get_protocol_num(const uint8_t *atr, uint32_t len)

{

    int i;



    if (len < 2 || !(atr[1] & 0x80)) {

        /* too short or TD1 not included */

        return 0; /* T=0, default */

    }

    i = 1 + !!(atr[1] & 0x10) + !!(atr[1] & 0x20) + !!(atr[1] & 0x40);

    i += !!(atr[1] & 0x80);

    return atr[i] & 0x0f;

}



static void ccid_write_data_block_atr(USBCCIDState *s, CCID_Header *recv)

{

    const uint8_t *atr = NULL;

    uint32_t len = 0;

    uint8_t atr_protocol_num;

    CCID_T0ProtocolDataStructure *t0 = &s->abProtocolDataStructure.t0;

    CCID_T1ProtocolDataStructure *t1 = &s->abProtocolDataStructure.t1;



    if (s->card) {

        atr = ccid_card_get_atr(s->card, &len);

    }

    atr_protocol_num = atr_get_protocol_num(atr, len);

    DPRINTF(s, D_VERBOSE, "%s: atr contains protocol=%d\n", __func__,

            atr_protocol_num);

    /* set parameters from ATR - see spec page 109 */

    s->bProtocolNum = (atr_protocol_num <= 1 ? atr_protocol_num

                                             : s->bProtocolNum);

    switch (atr_protocol_num) {

    case 0:

        /* TODO: unimplemented ATR T0 parameters */

        t0->bmFindexDindex = 0;

        t0->bmTCCKST0 = 0;

        t0->bGuardTimeT0 = 0;

        t0->bWaitingIntegerT0 = 0;

        t0->bClockStop = 0;

        break;

    case 1:

        /* TODO: unimplemented ATR T1 parameters */

        t1->bmFindexDindex = 0;

        t1->bmTCCKST1 = 0;

        t1->bGuardTimeT1 = 0;

        t1->bWaitingIntegerT1 = 0;

        t1->bClockStop = 0;

        t1->bIFSC = 0;

        t1->bNadValue = 0;

        break;

    default:

        DPRINTF(s, D_WARN, "%s: error: unsupported ATR protocol %d\n",

                __func__, atr_protocol_num);

    }

    ccid_write_data_block(s, recv->bSlot, recv->bSeq, atr, len);

}