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nfc_initiator_target_is_present(): improve MFC support for 7-byte UID

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This commit is contained in:
Philippe Teuwen 2014-01-30 00:09:03 +01:00
parent 9d63a93dd8
commit 095f945224
1 changed files with 21 additions and 1 deletions
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22
libnfc/chips/pn53x.c
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@ -1808,7 +1808,27 @@ pn53x_initiator_target_is_present(struct nfc_device *pnd, const nfc_target *pnt)
} else {
// Limitation: re-select will lose authentication of already authenticated sector
// TODO: buggy when card is removed on Tikitag
if ((ret = pn53x_initiator_select_passive_target_ext(pnd, CHIP_DATA(pnd)->current_target->nm, CHIP_DATA(pnd)->current_target->nti.nai.abtUid, CHIP_DATA(pnd)->current_target->nti.nai.szUidLen, NULL, 300)) == 1) {
uint8_t pbtInitiatorData[12];
uint8_t szInitiatorData = 0;
switch (CHIP_DATA(pnd)->current_target->nti.nai.szUidLen) {
case 4:
memcpy(pbtInitiatorData, CHIP_DATA(pnd)->current_target->nti.nai.abtUid, 4);
szInitiatorData = 4;
break;
case 7:
pbtInitiatorData[0] = 0x88;
memcpy(&pbtInitiatorData[1], CHIP_DATA(pnd)->current_target->nti.nai.abtUid, 7);
szInitiatorData = 8;
break;
case 10:
pbtInitiatorData[0] = 0x88;
memcpy(&pbtInitiatorData[1], CHIP_DATA(pnd)->current_target->nti.nai.abtUid, 3);
pbtInitiatorData[4] = 0x88;
memcpy(&pbtInitiatorData[5], &CHIP_DATA(pnd)->current_target->nti.nai.abtUid[3], 7);
szInitiatorData = 12;
break;
}
if ((ret = pn53x_initiator_select_passive_target_ext(pnd, CHIP_DATA(pnd)->current_target->nm, pbtInitiatorData, szInitiatorData, NULL, 300)) == 1) {
ret = NFC_SUCCESS;
} else if ((ret == 0) || (ret == NFC_ETIMEOUT)) {
ret = NFC_ETGRELEASED;