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Split pn53x_initiator_target_is_present() for readability

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This commit is contained in:
Philippe Teuwen 2014-01-30 18:10:30 +01:00
parent 62e78ab582
commit 9a84bb0ba0
1 changed files with 112 additions and 80 deletions
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192
libnfc/chips/pn53x.c
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@ -1752,6 +1752,112 @@ static int pn53x_Diagnose06(struct nfc_device *pnd)
return ret;
}
static int pn53x_ISO14443A_4_is_present(struct nfc_device *pnd)
{
int ret;
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping -4A");
if ((CHIP_DATA(pnd)->type == PN532) || (CHIP_DATA(pnd)->type == PN533)) {
ret = pn53x_Diagnose06(pnd);
} else {
ret = NFC_EDEVNOTSUPP;
}
return ret;
}
static int pn53x_ISO14443A_MFUL_is_present(struct nfc_device *pnd)
{
int ret;
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping MFUL");
// Limitation: test on MFULC non-authenticated with read of first sector forbidden will fail
if (CHIP_DATA(pnd)->type == PN533) {
ret = pn53x_Diagnose06(pnd);
} else {
uint8_t abtCmd[2] = {0x30, 0x00};
if (nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, -1) > 0) {
ret = NFC_SUCCESS;
} else {
ret = NFC_ETGRELEASED;
}
}
return ret;
}
static int pn53x_ISO14443A_MFC_is_present(struct nfc_device *pnd)
{
int ret;
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping MFC");
if ((CHIP_DATA(pnd)->type == PN533) && (CHIP_DATA(pnd)->current_target->nti.nai.btSak != 0x09)) {
// MFC Mini (atqa0004/sak09) fails on PN533, so we exclude it
ret = pn53x_Diagnose06(pnd);
} else {
// Limitation: re-select will lose authentication of already authenticated sector
// TODO: buggy when card is removed on Tikitag
uint8_t pbtInitiatorData[12];
size_t szInitiatorData = 0;
iso14443_cascade_uid(CHIP_DATA(pnd)->current_target->nti.nai.abtUid, CHIP_DATA(pnd)->current_target->nti.nai.szUidLen, pbtInitiatorData, &szInitiatorData);
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;
}
}
return ret;
}
static int pn53x_DEP_is_present(struct nfc_device *pnd)
{
int ret;
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping DEP");
if ((CHIP_DATA(pnd)->type == PN531) || (CHIP_DATA(pnd)->type == PN532) || (CHIP_DATA(pnd)->type == PN533))
ret = pn53x_Diagnose06(pnd);
else
ret = NFC_EDEVNOTSUPP;
return ret;
}
static int pn53x_Felica_is_present(struct nfc_device *pnd)
{
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping Felica");
// if (CHIP_DATA(pnd)->type == PN533) { ret = pn53x_Diagnose06(pnd); } else...
// Because ping fails now & then, better not to use Diagnose at all
// Limitation: does not work on Felica Lite cards (neither Diagnose nor our method)
uint8_t abtCmd[10] = {0x0A, 0x04};
memcpy(abtCmd + 2, CHIP_DATA(pnd)->current_target->nti.nfi.abtId, 8);
int failures = 0;
// Sometimes ping fails so we want to give the card some more chances...
while (failures < 3) {
if (nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, 300) == 11) {
return NFC_SUCCESS;
} else {
failures++;
}
}
return NFC_ETGRELEASED;
}
static int pn53x_ISO14443B_4_is_present(struct nfc_device *pnd)
{
int ret;
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping -4B");
if (CHIP_DATA(pnd)->type == PN533) { // Not supported on PN532 even if the doc is same as for PN533
ret = pn53x_Diagnose06(pnd);
} else {
// Sending R(NACK) in raw:
if ((ret = pn53x_set_property_bool(pnd, NP_EASY_FRAMING, false)) < 0)
return ret;
// uint8_t abtCmd[1] = {0xb2}; // if on PN533, CID=0
uint8_t abtCmd[2] = {0xba, 0x01}; // if on PN532, CID=1
if (nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, 300) > 0)
ret = NFC_SUCCESS;
else
ret = NFC_ETGRELEASED;
int ret2;
if ((ret2 = pn53x_set_property_bool(pnd, NP_EASY_FRAMING, true)) < 0)
ret = ret2;
}
return ret;
}
int
pn53x_initiator_target_is_present(struct nfc_device *pnd, const nfc_target *pnt)
{
@ -1776,100 +1882,26 @@ pn53x_initiator_target_is_present(struct nfc_device *pnd, const nfc_target *pnt)
switch (CHIP_DATA(pnd)->current_target->nm.nmt) {
case NMT_ISO14443A:
if (CHIP_DATA(pnd)->current_target->nti.nai.btSak & 0x20) {
// -4A
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping -4A");
if ((CHIP_DATA(pnd)->type == PN532) || (CHIP_DATA(pnd)->type == PN533)) {
ret = pn53x_Diagnose06(pnd);
} else {
ret = NFC_EDEVNOTSUPP;
}
ret = pn53x_ISO14443A_4_is_present(pnd);
} else if ((CHIP_DATA(pnd)->current_target->nti.nai.abtAtqa[0] == 0x00) &&
(CHIP_DATA(pnd)->current_target->nti.nai.abtAtqa[1] == 0x44) &&
(CHIP_DATA(pnd)->current_target->nti.nai.btSak == 0x00)) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping MFUL");
// MFUL
// Limitation: test on MFULC non-authenticated with read of first sector forbidden will fail
if (CHIP_DATA(pnd)->type == PN533) {
ret = pn53x_Diagnose06(pnd);
} else {
uint8_t abtCmd[2] = {0x30, 0x00};
if (nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, -1) > 0) {
ret = NFC_SUCCESS;
} else {
ret = NFC_ETGRELEASED;
}
}
ret = pn53x_ISO14443A_MFUL_is_present(pnd);
} else if (CHIP_DATA(pnd)->current_target->nti.nai.btSak & 0x08) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping MFC");
// MFC
if ((CHIP_DATA(pnd)->type == PN533) && (CHIP_DATA(pnd)->current_target->nti.nai.btSak != 0x09)) {
// MFC Mini (atqa0004/sak09) fails on PN533, so we exclude it
ret = pn53x_Diagnose06(pnd);
ret = pn53x_ISO14443A_MFC_is_present(pnd);
} else {
// Limitation: re-select will lose authentication of already authenticated sector
// TODO: buggy when card is removed on Tikitag
uint8_t pbtInitiatorData[12];
size_t szInitiatorData = 0;
iso14443_cascade_uid(CHIP_DATA(pnd)->current_target->nti.nai.abtUid, CHIP_DATA(pnd)->current_target->nti.nai.szUidLen, pbtInitiatorData, &szInitiatorData);
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;
}
}
} else {
// unknown
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): card type A not supported");
ret = NFC_EDEVNOTSUPP;
}
// TODO what about dual mode cards: MFP, JCOP etc? (MFC + -4)
// we've to detect them and it depends in which state they are
break;
case NMT_DEP:
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping DEP");
if ((CHIP_DATA(pnd)->type == PN531) || (CHIP_DATA(pnd)->type == PN532) || (CHIP_DATA(pnd)->type == PN533))
ret = pn53x_Diagnose06(pnd);
else
ret = NFC_EDEVNOTSUPP;
ret = pn53x_DEP_is_present(pnd);
break;
case NMT_FELICA:
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping Felica");
// if (CHIP_DATA(pnd)->type == PN533) { ret = pn53x_Diagnose06(pnd); } else...
// Because ping fails now & then, better not to use Diagnose at all
// Limitation: does not work on Felica Lite cards (neither Diagnose nor our method)
uint8_t abtCmd[10] = {0x0A, 0x04};
memcpy(abtCmd + 2, CHIP_DATA(pnd)->current_target->nti.nfi.abtId, 8);
int failures = 0;
ret = NFC_ETGRELEASED;
// Sometimes ping fails so we want to give the card some more chances...
while (failures < 3) {
if (nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, 300) == 11) {
ret = NFC_SUCCESS;
break;
} else {
failures++;
}
}
ret = pn53x_Felica_is_present(pnd);
break;
case NMT_ISO14443B:
// -4B
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "target_is_present(): Ping -4B");
if (CHIP_DATA(pnd)->type == PN533) { // Not supported on PN532 even if the doc is same as for PN533
ret = pn53x_Diagnose06(pnd);
} else {
// Sending R(NACK) in raw:
if ((ret = pn53x_set_property_bool(pnd, NP_EASY_FRAMING, false)) < 0)
break;
// uint8_t abtCmd[1] = {0xb2}; // if on PN533, CID=0
uint8_t abtCmd[2] = {0xba, 0x01}; // if on PN532, CID=1
if (nfc_initiator_transceive_bytes(pnd, abtCmd, sizeof(abtCmd), NULL, 0, 300) > 0)
ret = NFC_SUCCESS;
else
ret = NFC_ETGRELEASED;
int ret2;
if ((ret2 = pn53x_set_property_bool(pnd, NP_EASY_FRAMING, true)) < 0)
ret = ret2;
}
ret = pn53x_ISO14443B_4_is_present(pnd);
break;
case NMT_JEWEL:
case NMT_ISO14443BI: