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emv/sc fixes and modifications: (#780)

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* print selected Smartcard Reader in PrintChannel()
* implement 'sc sel <readername>'. Readername can include wildcards * and ?
* fixing EMV APDU exchange (again)
* use EMVExchangeEx() instead of EMVExchange() in fidocore.c
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pwpiwi 2019-02-09 15:15:17 +01:00 • committed by GitHub
commit 41bdfce385
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7 changed files with 165 additions and 118 deletions
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71
client/emv/emvcore.c
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@ -9,13 +9,27 @@
//-----------------------------------------------------------------------------
#include "emvcore.h"
#include <string.h>
#include "emvjson.h"
#include "util_posix.h"
#include "protocols.h"
#include "ui.h"
#include "util.h"
#include "emv_tags.h"
#include "emv_pk.h"
#include "emv_pki.h"
#include "cmdhf14a.h"
#include "apduinfo.h"
#include "tlv.h"
#include "dump.h"
#include "dol.h"
#ifdef WITH_SMARTCARD
#include "cmdsmartcard.h"
#endif
// Got from here. Thanks)
// https://eftlab.co.uk/index.php/site-map/knowledge-base/211-emv-aid-rid-pix
static const char *PSElist [] = {
@ -129,6 +143,12 @@ void SetAPDULogging(bool logging) {
APDULogging = logging;
}
void DropFieldEx(EMVCommandChannel channel) {
if (channel == ECC_CONTACTLESS) {
DropField();
}
}
enum CardPSVendor GetCardPSVendor(uint8_t * AID, size_t AIDlen) {
char buf[100] = {0};
if (AIDlen < 1)
@ -267,39 +287,38 @@ struct tlvdb *GetdCVVRawFromTrack2(const struct tlv *track2) {
}
static int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
{
*ResultLen = 0;
if (sw) *sw = 0;
uint16_t isw = 0;
int res = 0;
if (ActivateField && channel == ECC_CONTACTLESS) {
DropField();
if (ActivateField) {
DropFieldEx( channel );
msleep(50);
}
if (APDULogging)
PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(apdu, apdu_len));
#ifdef WITH_SMARTCARD
switch(channel) {
case ECC_CONTACTLESS:
// 6 byes + data = INS + CLA + P1 + P2 + Lc + <data = Nc> + Le(?IncludeLe)
res = ExchangeAPDU14a(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
if (res) {
return res;
}
break;
case ECC_CONTACT:
//int ExchangeAPDUSC(uint8_t *datain, int datainlen, bool activateCard, bool leaveSignalON, uint8_t *dataout, int maxdataoutlen, int *dataoutlen);
#ifdef WITH_SMARTCARD
res = ExchangeAPDUSC(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
if (res) {
return res;
}
#endif
break;
}
#else
res = ExchangeAPDU14a(apdu, apdu_len, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
#endif
if (res) {
return res;
}
if (APDULogging)
PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(Result, *ResultLen));
@ -308,13 +327,18 @@ static int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool Lea
return 200;
}
/* if (Result[*ResultLen-2] == 0x61) {
if (Result[*ResultLen-2] == 0x61) {
uint8_t La = Result[*ResultLen-1];
uint8_t get_response[5] = {apdu[0], ISO7816_GET_RESPONSE, 0x00, 0x00, La};
return EMVExchangeEx(channel, false, LeaveFieldON, get_response, sizeof(get_response), Result, MaxResultLen, ResultLen, sw, tlv);
}*/
size_t oldlen = *ResultLen;
res = EMVExchangeEx(channel, false, LeaveFieldON, get_response, sizeof(get_response), &Result[oldlen-2], MaxResultLen-oldlen+2, ResultLen, sw, tlv);
*ResultLen += oldlen;
}
if (res) return res;
*ResultLen -= 2;
isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
if (sw)
*sw = isw;
@ -335,19 +359,18 @@ static int EMVExchangeEx(EMVCommandChannel channel, bool ActivateField, bool Lea
return 0;
}
int EMVExchange(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
static int EMVExchange(EMVCommandChannel channel, bool LeaveFieldON, uint8_t *apdu, int apdu_len, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw, struct tlvdb *tlv)
{
uint8_t APDU[APDU_COMMAND_LEN];
memcpy(APDU, apdu, apdu_len);
APDU[apdu_len] = 0x00;
if (channel == ECC_CONTACTLESS) {
if (apdu_len == 5 && apdu[4] == 0) {
// there is no Lc but an Le == 0 already
if (apdu_len == 5) {
// there is no Lc but an Le already
} else if (apdu_len > 5 && apdu_len == 5 + apdu[4] + 1) {
// there is Lc, data and Le
} else {
if (apdu[1] != 0xc0)
apdu_len++; // no Le, add Le = 0x00 because some vendors require it for contactless
apdu_len++; // no Le, add Le = 0x00 because some vendors require it for contactless
}
}
return EMVExchangeEx(channel, false, LeaveFieldON, APDU, apdu_len, Result, MaxResultLen, ResultLen, sw, tlv);
@ -539,8 +562,8 @@ int EMVSearchPSE(EMVCommandChannel channel, bool ActivateField, bool LeaveFieldO
PrintAndLogEx(WARNING, "%s ERROR: Can't select PPSE AID. Error: %d", PSE_or_PPSE, res);
}
if(!LeaveFieldON && channel == ECC_CONTACTLESS)
DropField();
if (!LeaveFieldON)
DropFieldEx( channel );
return res;
}
@ -696,7 +719,7 @@ struct emv_pk *get_ca_pk(struct tlvdb *db) {
if (!df_tlv || !caidx_tlv || df_tlv->len < 6 || caidx_tlv->len != 1)
return NULL;
PrintAndLogEx(NORMAL, "CA public key index 0x%0x", caidx_tlv->value[0]);
PrintAndLogEx(NORMAL, "CA Public Key index 0x%0x", caidx_tlv->value[0]);
return emv_pk_get_ca_pk(df_tlv->value, caidx_tlv->value[0]);
}
@ -1016,7 +1039,7 @@ int trCDA(struct tlvdb *tlv, struct tlvdb *ac_tlv, struct tlv *pdol_data_tlv, st
struct emv_pk *icc_pk = emv_pki_recover_icc_cert(issuer_pk, tlv, sda_tlv);
if (!icc_pk) {
PrintAndLogEx(WARNING, "Error: ICC setrificate not found. Exit.");
PrintAndLogEx(WARNING, "Error: ICC certificate not found. Exit.");
emv_pk_free(pk);
emv_pk_free(issuer_pk);
return 2;