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

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Adds todos.

Signed-off-by: Alon Levy <alevy@redhat.com>
Reviewed-by: Marc-André Lureau <mlureau@redhat.com>
This commit is contained in:
Alon Levy 2013-03-04 18:58:29 +02:00
parent d7d218ef02
commit 2f8f916b6d
1 changed files with 45 additions and 0 deletions
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45
hw/usb/dev-smartcard-reader.c
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@ -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);
}