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commands.c
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commands.c
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/*
commands.c: Commands sent to the card
Copyright (C) 2003-2010 Ludovic Rousseau
Copyright (C) 2005 Martin Paljak
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <config.h>
#include <stdbool.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <pcsclite.h>
#include <ifdhandler.h>
#include <reader.h>
#include "misc.h"
#include "commands.h"
#include "openct/proto-t1.h"
#include "ccid.h"
#include "defs.h"
#include "ccid_ifdhandler.h"
#include "debug.h"
#include "utils.h"
/* All the pinpad readers I used are more or less bogus
* I use code to change the user command and make the firmware happy */
#define BOGUS_PINPAD_FIRMWARE
/* The firmware of SCM readers reports dwMaxCCIDMessageLength = 263
* instead of 270 so this prevents from sending a full length APDU
* of 260 bytes since the driver check this value */
#define BOGUS_SCM_FIRMWARE_FOR_dwMaxCCIDMessageLength
#ifndef offsetof
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#endif
#define CHECK_STATUS(res) \
if (STATUS_NO_SUCH_DEVICE == res) \
return IFD_NO_SUCH_DEVICE; \
if (STATUS_SUCCESS != res) \
return IFD_COMMUNICATION_ERROR;
/* internal functions */
static RESPONSECODE CmdXfrBlockAPDU_extended(unsigned int reader_index,
unsigned int tx_length, unsigned char tx_buffer[], unsigned int *rx_length,
unsigned char rx_buffer[]);
static RESPONSECODE CmdXfrBlockTPDU_T0(unsigned int reader_index,
unsigned int tx_length, unsigned char tx_buffer[], unsigned int *rx_length,
unsigned char rx_buffer[]);
static RESPONSECODE CmdXfrBlockCHAR_T0(unsigned int reader_index, unsigned int
tx_length, unsigned char tx_buffer[], unsigned int *rx_length, unsigned
char rx_buffer[]);
static RESPONSECODE CmdXfrBlockTPDU_T1(unsigned int reader_index,
unsigned int tx_length, unsigned char tx_buffer[], unsigned int *rx_length,
unsigned char rx_buffer[]);
static void i2dw(int value, unsigned char *buffer);
static unsigned int bei2i(unsigned char *buffer);
/*****************************************************************************
*
* CmdPowerOn
*
****************************************************************************/
RESPONSECODE CmdPowerOn(unsigned int reader_index, unsigned int * nlength,
unsigned char buffer[], int voltage)
{
unsigned char cmd[10];
unsigned char resp[10 + MAX_ATR_SIZE];
int bSeq;
status_t res;
int count = 1;
unsigned int atr_len, length;
int init_voltage;
RESPONSECODE return_value = IFD_SUCCESS;
_ccid_descriptor *ccid_descriptor = get_ccid_descriptor(reader_index);
#ifndef TWIN_SERIAL
if (PROTOCOL_ICCD_A == ccid_descriptor->bInterfaceProtocol)
{
int r;
unsigned char pcbuffer[SIZE_GET_SLOT_STATUS];
/* first power off to reset the ICC state machine */
r = CmdPowerOff(reader_index);
if (r != IFD_SUCCESS)
return r;
/* wait for ready */
r = CmdGetSlotStatus(reader_index, pcbuffer);
if (r != IFD_SUCCESS)
return r;
/* Power On */
r = ControlUSB(reader_index, 0xA1, 0x62, 0, buffer, *nlength);
/* we got an error? */
if (r < 0)
{
DEBUG_INFO2("ICC Power On failed: %s", strerror(errno));
return IFD_COMMUNICATION_ERROR;
}
*nlength = r;
return IFD_SUCCESS;
}
if (PROTOCOL_ICCD_B == ccid_descriptor->bInterfaceProtocol)
{
int r;
unsigned char tmp[MAX_ATR_SIZE+1];
/* first power off to reset the ICC state machine */
r = CmdPowerOff(reader_index);
if (r != IFD_SUCCESS)
return r;
/* Power On */
r = ControlUSB(reader_index, 0x21, 0x62, 1, NULL, 0);
/* we got an error? */
if (r < 0)
{
DEBUG_INFO2("ICC Power On failed: %s", strerror(errno));
return IFD_COMMUNICATION_ERROR;
}
/* Data Block */
r = ControlUSB(reader_index, 0xA1, 0x6F, 0, tmp, sizeof(tmp));
/* we got an error? */
if (r < 0)
{
DEBUG_INFO2("ICC Data Block failed: %s", strerror(errno));
return IFD_COMMUNICATION_ERROR;
}
if (tmp[0] != 0x00)
{
DEBUG_CRITICAL2("bResponseType: 0x%02X", tmp[0]);
/* Status Information? */
if (0x40 == tmp[0])
ccid_error(PCSC_LOG_ERROR, tmp[2], __FILE__, __LINE__, __FUNCTION__);
return IFD_COMMUNICATION_ERROR;
}
DEBUG_INFO_XXD("Data Block: ", tmp, r);
if ((int)*nlength > r-1)
*nlength = r-1;
memcpy(buffer, tmp+1, *nlength);
return IFD_SUCCESS;
}
#endif
if ((ccid_descriptor->dwFeatures & CCID_CLASS_AUTO_VOLTAGE)
|| (ccid_descriptor->dwFeatures & CCID_CLASS_AUTO_ACTIVATION))
voltage = 0; /* automatic voltage selection */
else
{
int bVoltageSupport = ccid_descriptor->bVoltageSupport;
check_again:
if ((1 == voltage) && !(bVoltageSupport & 1))
{
DEBUG_INFO1("5V requested but not supported by reader");
voltage = 2; /* 3V */
}
if ((2 == voltage) && !(bVoltageSupport & 2))
{
DEBUG_INFO1("3V requested but not supported by reader");
voltage = 3; /* 1.8V */
}
if ((3 == voltage) && !(bVoltageSupport & 4))
{
DEBUG_INFO1("1.8V requested but not supported by reader");
voltage = 1; /* 5V */
/* do not (infinite) loop if bVoltageSupport == 0 */
if (bVoltageSupport)
goto check_again;
}
}
init_voltage = voltage;
again:
bSeq = (*ccid_descriptor->pbSeq)++;
cmd[0] = 0x62; /* IccPowerOn */
cmd[1] = cmd[2] = cmd[3] = cmd[4] = 0; /* dwLength */
cmd[5] = ccid_descriptor->bCurrentSlotIndex; /* slot number */
cmd[6] = bSeq;
cmd[7] = voltage;
cmd[8] = cmd[9] = 0; /* RFU */
res = WritePort(reader_index, sizeof(cmd), cmd);
CHECK_STATUS(res)
length = sizeof resp;
res = ReadPort(reader_index, &length, resp, bSeq);
CHECK_STATUS(res)
if (length < CCID_RESPONSE_HEADER_SIZE)
{
DEBUG_CRITICAL2("Not enough data received: %d bytes", length);
return IFD_COMMUNICATION_ERROR;
}
if (resp[STATUS_OFFSET] & CCID_COMMAND_FAILED)
{
ccid_error(PCSC_LOG_ERROR, resp[ERROR_OFFSET], __FILE__, __LINE__, __FUNCTION__); /* bError */
if (0xBB == resp[ERROR_OFFSET] && /* Protocol error in EMV mode */
((GEMPC433 == ccid_descriptor->readerID)
|| (CHERRYXX33 == ccid_descriptor->readerID)))
{
unsigned char cmd_tmp[] = {0x1F, 0x01};
unsigned char res_tmp[1];
unsigned int res_length = sizeof(res_tmp);
if ((return_value = CmdEscape(reader_index, cmd_tmp,
sizeof(cmd_tmp), res_tmp, &res_length, 0)) != IFD_SUCCESS)
return return_value;
/* avoid looping if we can't switch mode */
if (count--)
goto again;
else
DEBUG_CRITICAL("Can't set reader in ISO mode");
}
/* continue with other voltage values */
if (voltage)
{
#ifndef NO_LOG
const char *voltage_code[] = { "1.8V", "5V", "3V", "1.8V" };
#endif
DEBUG_INFO3("Power up with %s failed. Try with %s.",
voltage_code[voltage], voltage_code[voltage-1]);
voltage--;
/* loop from 5V to 1.8V */
if (0 == voltage)
voltage = 3;
/* continue until we tried every values */
if (voltage != init_voltage)
goto again;
}
return IFD_COMMUNICATION_ERROR;
}
/* extract the ATR */
atr_len = dw2i(resp, 1); /* ATR length */
if (atr_len > *nlength)
atr_len = *nlength;
*nlength = atr_len;
memcpy(buffer, resp+10, atr_len);
return return_value;
} /* CmdPowerOn */
/*****************************************************************************
*
* SecurePINVerify
*
****************************************************************************/
RESPONSECODE SecurePINVerify(unsigned int reader_index,
unsigned char TxBuffer[], unsigned int TxLength,
unsigned char RxBuffer[], unsigned int *RxLength)
{
unsigned char cmd[11+14+TxLength];
unsigned int a, b;
PIN_VERIFY_STRUCTURE *pvs;
_ccid_descriptor *ccid_descriptor = get_ccid_descriptor(reader_index);
int old_read_timeout;
RESPONSECODE ret;
status_t res;
uint32_t ulDataLength;
pvs = (PIN_VERIFY_STRUCTURE *)TxBuffer;
cmd[0] = 0x69; /* Secure */
cmd[5] = ccid_descriptor->bCurrentSlotIndex; /* slot number */
cmd[6] = (*ccid_descriptor->pbSeq)++;
cmd[7] = 0; /* bBWI */
cmd[8] = 0; /* wLevelParameter */
cmd[9] = 0;
cmd[10] = 0; /* bPINOperation: PIN Verification */
if (TxLength < 19+4 /* 4 = APDU size */) /* command too short? */
{
DEBUG_INFO3("Command too short: %d < %d", TxLength, 19+4);
return IFD_NOT_SUPPORTED;
}
/* On little endian machines we are all set. */
/* If on big endian machine and caller is using host byte order */
ulDataLength = get_U32(&pvs->ulDataLength);
if ((ulDataLength + 19 == TxLength) &&
(bei2i((unsigned char*)(&pvs->ulDataLength)) == ulDataLength))
{
DEBUG_INFO1("Reversing order from big to little endian");
/* If ulDataLength is big endian, assume others are too */
/* reverse the byte order for 3 fields */
p_bswap_16(&pvs->wPINMaxExtraDigit);
p_bswap_16(&pvs->wLangId);
p_bswap_32(&pvs->ulDataLength);
}
/* At this point we now have the above 3 variables in little endian */
if (dw2i(TxBuffer, 15) + 19 != TxLength) /* ulDataLength field coherency */
{
DEBUG_INFO3("Wrong lengths: %d %d", dw2i(TxBuffer, 15) + 19, TxLength);
return IFD_NOT_SUPPORTED;
}
/* make sure bEntryValidationCondition is valid
* The Cherry XX44 reader crashes with a wrong value */
if ((0x00 == TxBuffer[7]) || (TxBuffer[7] > 0x07))
{
DEBUG_INFO2("Fix bEntryValidationCondition (was 0x%02X)",
TxBuffer[7]);
TxBuffer[7] = 0x02;
}
#ifdef BOGUS_PINPAD_FIRMWARE
/* bug circumvention for the GemPC Pinpad */
if ((GEMPCPINPAD == ccid_descriptor->readerID)
|| (VEGAALPHA == ccid_descriptor->readerID))
{
/* the firmware reject the cases: 00h No string and FFh default
* CCID message. The only value supported is 01h (display 1 message) */
if (0x01 != TxBuffer[8])
{
DEBUG_INFO2("Fix bNumberMessage for GemPC Pinpad (was %d)",
TxBuffer[8]);
TxBuffer[8] = 0x01;
}
/* The reader does not support, and actively reject, "max size reached"
* and "timeout occurred" validation conditions */
if (0x02 != TxBuffer[7])
{
DEBUG_INFO2("Fix bEntryValidationCondition for GemPC Pinpad (was %d)",
TxBuffer[7]);
TxBuffer[7] = 0x02; /* validation key pressed */
}
}
if ((VENDOR_GEMALTO == GET_VENDOR(ccid_descriptor->readerID))
&& (ccid_descriptor->gemalto_firmware_features))
{
int bEntryValidationCondition = ccid_descriptor->gemalto_firmware_features->bEntryValidationCondition;
if (TxBuffer[7] & ~bEntryValidationCondition)
{
DEBUG_INFO2("Fix bEntryValidationCondition (was 0x%02X)",
TxBuffer[7]);
TxBuffer[7] &= bEntryValidationCondition;
}
}
if ((DELLSCRK == ccid_descriptor->readerID)
|| (DELLSK == ccid_descriptor->readerID))
{
/* the firmware rejects the cases: 01h-FEh and FFh default
* CCID message. The only value supported is 00h (no message) */
if (0x00 != TxBuffer[8])
{
DEBUG_INFO2("Fix bNumberMessage for Dell keyboard (was %d)",
TxBuffer[8]);
TxBuffer[8] = 0x00;
}
/* avoid the command rejection because the Enter key is still
* pressed. Wait a bit for the key to be released */
(void)usleep(250*1000);
}
if (DELLSK == ccid_descriptor->readerID)
{
/* the 2 bytes of wPINMaxExtraDigit are reversed */
int tmp;
tmp = TxBuffer[6];
TxBuffer[6] = TxBuffer[5];
TxBuffer[5] = tmp;
DEBUG_INFO1("Fix wPINMaxExtraDigit for Dell keyboard");
}
#endif
/* T=1 Protocol Management for a TPDU reader */
if ((SCARD_PROTOCOL_T1 == ccid_descriptor->cardProtocol)
&& (CCID_CLASS_TPDU == (ccid_descriptor->dwFeatures & CCID_CLASS_EXCHANGE_MASK)))
{
ct_buf_t sbuf;
unsigned char sdata[T1_BUFFER_SIZE];
/* Initialize send buffer with the APDU */
ct_buf_set(&sbuf,
(void *)(TxBuffer + offsetof(PIN_VERIFY_STRUCTURE, abData)),
TxLength - offsetof(PIN_VERIFY_STRUCTURE, abData));
/* Create T=1 block */
(void)t1_build(&((get_ccid_slot(reader_index))->t1),
sdata, 0, T1_I_BLOCK, &sbuf, NULL);
/* Increment the sequence numbers */
get_ccid_slot(reader_index)->t1.ns ^= 1;
get_ccid_slot(reader_index)->t1.nr ^= 1;
/* Copy the generated T=1 block prologue into the teoprologue
* of the CCID command */
memcpy(TxBuffer + offsetof(PIN_VERIFY_STRUCTURE, bTeoPrologue),
sdata, 3);
}
/* Build a CCID block from a PC/SC V2.02.05 Part 10 block */
for (a = 11, b = 0; b < TxLength; b++)
{
if (1 == b) /* bTimeOut2 field */
/* Ignore the second timeout as there's nothing we can do with
* it currently */
continue;
if ((b >= 15) && (b <= 18)) /* ulDataLength field (4 bytes) */
/* the ulDataLength field is not present in the CCID frame
* so do not copy */
continue;
/* copy the CCID block 'verbatim' */
cmd[a] = TxBuffer[b];
a++;
}
/* SPR532 and Case 1 APDU */
if ((SPR532 == ccid_descriptor->readerID)
/* bmPINBlockString = 0 => PIN length not inserted in APDU */
&& (0 == TxBuffer[3])
/* case 1 APDU */
&& (4 == TxBuffer[15]))
{
RESPONSECODE return_value;
unsigned char cmd_tmp[] = { 0x80, 0x02, 0x00 };
unsigned char res_tmp[1];
unsigned int res_length = sizeof(res_tmp);
/* the SPR532 will append the PIN code without any padding */
return_value = CmdEscape(reader_index, cmd_tmp, sizeof(cmd_tmp),
res_tmp, &res_length, 0);
if (return_value != IFD_SUCCESS)
return return_value;
/* we need to set bSeq again to avoid a "Duplicate frame detected"
* error since the bSeq of CmdEscape is now greater than bSeq set at
* the beginning of this function */
cmd[6] = (*ccid_descriptor->pbSeq)++;
}
i2dw(a - 10, cmd + 1); /* CCID message length */
old_read_timeout = ccid_descriptor -> readTimeout;
ccid_descriptor -> readTimeout = max(90, TxBuffer[0]+10)*1000; /* at least 90 seconds */
res = WritePort(reader_index, a, cmd);
if (STATUS_SUCCESS != res)
{
if (STATUS_NO_SUCH_DEVICE == res)
ret = IFD_NO_SUCH_DEVICE;
else
ret = IFD_COMMUNICATION_ERROR;
goto end;
}
ret = CCID_Receive(reader_index, RxLength, RxBuffer, NULL);
/* T=1 Protocol Management for a TPDU reader */
if ((SCARD_PROTOCOL_T1 == ccid_descriptor->cardProtocol)
&& (CCID_CLASS_TPDU == (ccid_descriptor->dwFeatures & CCID_CLASS_EXCHANGE_MASK)))
{
/* timeout and cancel cases are faked by CCID_Receive() */
if ((2 == *RxLength)
/* the CCID command is rejected or failed */
|| (IFD_SUCCESS != ret))
{
/* Decrement the sequence numbers since no TPDU was sent */
get_ccid_slot(reader_index)->t1.ns ^= 1;
get_ccid_slot(reader_index)->t1.nr ^= 1;
}
else
{
/* FIXME: manage T=1 error blocks */
/* defines from openct/proto-t1.c */
#define PCB 1
#define DATA 3
#define T1_S_BLOCK 0xC0
#define T1_S_RESPONSE 0x20
#define T1_S_TYPE(pcb) ((pcb) & 0x0F)
#define T1_S_WTX 0x03
/* WTX S-block */
if ((T1_S_BLOCK | T1_S_WTX) == RxBuffer[PCB])
{
/*
* The Swiss health care card sends a WTX request before returning the
* SW code. If the reader is in TPDU the driver must manage the request
* itself.
*
* received: 00 C3 01 09 CB
* openct/proto-t1.c:432:t1_transceive() S-Block request received
* openct/proto-t1.c:489:t1_transceive() CT sent S-block with wtx=9
* sending: 00 E3 01 09 EB
* openct/proto-t1.c:667:t1_xcv() New timeout at WTX request: 23643 sec
* received: 00 40 02 90 00 D2
*/
ct_buf_t tbuf;
unsigned char sblk[1]; /* we only need 1 byte of data */
t1_state_t *t1 = &get_ccid_slot(reader_index)->t1;
unsigned int slen;
DEBUG_COMM2("CT sent S-block with wtx=%u", RxBuffer[DATA]);
t1->wtx = RxBuffer[DATA];
if (t1->wtx > 1)
{
/* set the new temporary timeout at WTX card request */
ccid_descriptor->readTimeout *= t1->wtx;
DEBUG_INFO2("New timeout at WTX request: %d sec",
ccid_descriptor->readTimeout);
}
ct_buf_init(&tbuf, sblk, sizeof(sblk));
t1->wtx = RxBuffer[DATA];
ct_buf_putc(&tbuf, RxBuffer[DATA]);
slen = t1_build(t1, RxBuffer, 0,
T1_S_BLOCK | T1_S_RESPONSE | T1_S_TYPE(RxBuffer[PCB]),
&tbuf, NULL);
ret = CCID_Transmit(t1 -> lun, slen, RxBuffer, 0, t1->wtx);
if (ret != IFD_SUCCESS)
goto end;
/* I guess we have at least 6 bytes in RxBuffer */
*RxLength = 6;
ret = CCID_Receive(reader_index, RxLength, RxBuffer, NULL);
if (ret != IFD_SUCCESS)
goto end;
}
/* this should not happen. It will make coverity happy */
if (*RxLength < 4)
{
ret = IFD_COMMUNICATION_ERROR;
goto end;
}
/* get only the T=1 data */
memmove(RxBuffer, RxBuffer+3, *RxLength -4);
*RxLength -= 4; /* remove NAD, PCB, LEN and CRC */
}
}
end:
/* Restore initial timeout */
ccid_descriptor -> readTimeout = old_read_timeout;
return ret;
} /* SecurePINVerify */
#ifdef BOGUS_PINPAD_FIRMWARE
/*****************************************************************************
*
* has_gemalto_modify_pin_bug
*
****************************************************************************/
static int has_gemalto_modify_pin_bug(_ccid_descriptor *ccid_descriptor)
{
/* Bug not present by default */
int has_bug = 0;
/* Covadis Véga-Alpha reader */
if (VEGAALPHA == ccid_descriptor->readerID)
{
/* This reader has the bug (uses a Gemalto firmware) */
has_bug = 1;
}
else
{
/* Gemalto reader */
if ((GET_VENDOR(ccid_descriptor->readerID) == VENDOR_GEMALTO))
{
has_bug = 1; /* assume it has the bug */
if (ccid_descriptor->gemalto_firmware_features &&
ccid_descriptor->gemalto_firmware_features->bNumberMessageFix)
{
/* A Gemalto reader has the ModifyPIN structure bug */
/* unless it explicitly reports it has been fixed */
has_bug = 0;
}
}
}
return has_bug;
} /* has_gemalto_modify_pin_bug */
#endif
/*****************************************************************************
*
* SecurePINModify
*
****************************************************************************/
RESPONSECODE SecurePINModify(unsigned int reader_index,
unsigned char TxBuffer[], unsigned int TxLength,
unsigned char RxBuffer[], unsigned int *RxLength)
{
unsigned char cmd[11+19+TxLength];
unsigned int a, b;
PIN_MODIFY_STRUCTURE *pms;
_ccid_descriptor *ccid_descriptor = get_ccid_descriptor(reader_index);
int old_read_timeout;
RESPONSECODE ret;
status_t res;
#ifdef BOGUS_PINPAD_FIRMWARE
int bNumberMessage = 0; /* for GemPC Pinpad */
int gemalto_modify_pin_bug;
#endif
uint32_t ulDataLength;
pms = (PIN_MODIFY_STRUCTURE *)TxBuffer;
cmd[0] = 0x69; /* Secure */
cmd[5] = ccid_descriptor->bCurrentSlotIndex; /* slot number */
cmd[6] = (*ccid_descriptor->pbSeq)++;
cmd[7] = 0; /* bBWI */
cmd[8] = 0; /* wLevelParameter */
cmd[9] = 0;
cmd[10] = 1; /* bPINOperation: PIN Modification */
if (TxLength < 24+4 /* 4 = APDU size */) /* command too short? */
{
DEBUG_INFO3("Command too short: %d < %d", TxLength, 24+4);
return IFD_NOT_SUPPORTED;
}
/* On little endian machines we are all set. */
/* If on big endian machine and caller is using host byte order */
ulDataLength = get_U32(&pms->ulDataLength);
if ((ulDataLength + 24 == TxLength) &&
(bei2i((unsigned char*)(&pms->ulDataLength)) == ulDataLength))
{
DEBUG_INFO1("Reversing order from big to little endian");
/* If ulDataLength is big endian, assume others are too */
/* reverse the byte order for 3 fields */
p_bswap_16(&pms->wPINMaxExtraDigit);
p_bswap_16(&pms->wLangId);
p_bswap_32(&pms->ulDataLength);
}
/* At this point we now have the above 3 variables in little endian */
if (dw2i(TxBuffer, 20) + 24 != TxLength) /* ulDataLength field coherency */
{
DEBUG_INFO3("Wrong lengths: %d %d", dw2i(TxBuffer, 20) + 24, TxLength);
return IFD_NOT_SUPPORTED;
}
/* Make sure in the beginning if bNumberMessage is valid or not.
* 0xFF is the default value. */
if ((TxBuffer[11] > 3) && (TxBuffer[11] != 0xFF))
{
DEBUG_INFO2("Wrong bNumberMessage: %d", TxBuffer[11]);
return IFD_NOT_SUPPORTED;
}
/* Make sure bEntryValidationCondition is valid
* The Cherry XX44 reader crashes with a wrong value */
if ((0x00 == TxBuffer[10]) || (TxBuffer[10] > 0x07))
{
DEBUG_INFO2("Fix bEntryValidationCondition (was 0x%02X)",
TxBuffer[10]);
TxBuffer[10] = 0x02;
}
#ifdef BOGUS_PINPAD_FIRMWARE
/* some firmwares are buggy so we try to "correct" the frame */
/*
* SPR 532 and Cherry ST 2000C has no display but requires _all_
* bMsgIndex fields with bNumberMessage set to 0.
*/
if ((SPR532 == ccid_descriptor->readerID)
|| (CHERRYST2000 == ccid_descriptor->readerID))
{
TxBuffer[11] = 0x03; /* set bNumberMessage to 3 so that
all bMsgIndex123 are filled */
TxBuffer[14] = TxBuffer[15] = TxBuffer[16] = 0; /* bMsgIndex123 */
}
/* the bug is a bit different than for the Cherry ST 2000C
* with bNumberMessage < 3 the command seems to be accepted
* and the card sends 6B 80 */
if (CHERRYXX44 == ccid_descriptor->readerID)
{
TxBuffer[11] = 0x03; /* set bNumberMessage to 3 so that
all bMsgIndex123 are filled */
}
/* bug circumvention for the GemPC Pinpad */
if ((GEMPCPINPAD == ccid_descriptor->readerID)
|| (VEGAALPHA == ccid_descriptor->readerID))
{
/* The reader does not support, and actively reject, "max size reached"
* and "timeout occurred" validation conditions */
if (0x02 != TxBuffer[10])
{
DEBUG_INFO2("Fix bEntryValidationCondition for GemPC Pinpad (was %d)",
TxBuffer[10]);
TxBuffer[10] = 0x02; /* validation key pressed */
}
}
if ((VENDOR_GEMALTO == GET_VENDOR(ccid_descriptor->readerID))
&& (ccid_descriptor->gemalto_firmware_features))
{
int bEntryValidationCondition = ccid_descriptor->gemalto_firmware_features->bEntryValidationCondition;
if (TxBuffer[10] & ~bEntryValidationCondition)
{
DEBUG_INFO2("Fix bEntryValidationCondition (was 0x%02X)",
TxBuffer[10]);
TxBuffer[10] &= bEntryValidationCondition;
}
}
gemalto_modify_pin_bug = has_gemalto_modify_pin_bug(ccid_descriptor);
if (gemalto_modify_pin_bug)
{
DEBUG_INFO1("Gemalto CCID Modify Pin Bug");
/* The reader requests a value for bMsgIndex2 and bMsgIndex3
* even if they should not be present. So we fake
* bNumberMessage=3. The real number of messages will be
* corrected later in the code */
bNumberMessage = TxBuffer[11];
if (0x03 != TxBuffer[11])
{
DEBUG_INFO2("Fix bNumberMessage for GemPC Pinpad (was %d)",
TxBuffer[11]);
TxBuffer[11] = 0x03; /* 3 messages */
}
}
/* Bug workaround for Cherry KC 1000 SC */
if (CHERRY_KC1000SC == ccid_descriptor->readerID)
{
/* The reader rejects bNumberMessage 0x00 in a PIN modify
* command. Change it to 0xff which is accepted. */
if (0x00 == TxBuffer[11])
{
DEBUG_INFO1("Fix bNumberMessage for Cherry KC 1000 SC (was 0)");
TxBuffer[11] = 0xff;
}
}
#endif
/* T=1 Protocol Management for a TPDU reader */
if ((SCARD_PROTOCOL_T1 == ccid_descriptor->cardProtocol)
&& (CCID_CLASS_TPDU == (ccid_descriptor->dwFeatures & CCID_CLASS_EXCHANGE_MASK)))
{
ct_buf_t sbuf;
unsigned char sdata[T1_BUFFER_SIZE];
/* Initialize send buffer with the APDU */
ct_buf_set(&sbuf,
(void *)(TxBuffer + offsetof(PIN_MODIFY_STRUCTURE, abData)),
TxLength - offsetof(PIN_MODIFY_STRUCTURE, abData));
/* Create T=1 block */
(void)t1_build(&((get_ccid_slot(reader_index))->t1),
sdata, 0, T1_I_BLOCK, &sbuf, NULL);
/* Increment the sequence numbers */
get_ccid_slot(reader_index)->t1.ns ^= 1;
get_ccid_slot(reader_index)->t1.nr ^= 1;
/* Copy the generated T=1 block prologue into the teoprologue
* of the CCID command */
memcpy(TxBuffer + offsetof(PIN_MODIFY_STRUCTURE, bTeoPrologue),
sdata, 3);
}
/* Build a CCID block from a PC/SC V2.02.05 Part 10 block */
/* Do adjustments as needed - CCID spec is not exact with some
* details in the format of the structure, per-reader adaptions
* might be needed.
*/
for (a = 11, b = 0; b < TxLength; b++)
{
if (1 == b) /* bTimeOut2 */
/* Ignore the second timeout as there's nothing we can do with it
* currently */
continue;
if (15 == b) /* bMsgIndex2 */
{
/* in CCID the bMsgIndex2 is present only if bNumberMessage != 0 */
if (0 == TxBuffer[11])
continue;
}
if (16 == b) /* bMsgIndex3 */
{
/* in CCID the bMsgIndex3 is present only if bNumberMessage == 3 */
if (TxBuffer[11] < 3)
continue;
}
if ((b >= 20) && (b <= 23)) /* ulDataLength field (4 bytes) */
/* the ulDataLength field is not present in the CCID frame
* so do not copy */
continue;
/* copy to the CCID block 'verbatim' */
cmd[a] = TxBuffer[b];
a++;
}
#ifdef BOGUS_PINPAD_FIRMWARE
if ((SPR532 == ccid_descriptor->readerID)
|| (CHERRYST2000 == ccid_descriptor->readerID))
{
cmd[21] = 0x00; /* set bNumberMessage to 0 */
}
if (gemalto_modify_pin_bug)
cmd[21] = bNumberMessage; /* restore the real value */
#endif
/* We know the size of the CCID message now */
i2dw(a - 10, cmd + 1); /* command length (includes bPINOperation) */
old_read_timeout = ccid_descriptor -> readTimeout;
ccid_descriptor -> readTimeout = max(90, TxBuffer[0]+10)*1000; /* at least 90 seconds */
res = WritePort(reader_index, a, cmd);
if (STATUS_SUCCESS != res)
{
if (STATUS_NO_SUCH_DEVICE == res)
ret = IFD_NO_SUCH_DEVICE;
else
ret = IFD_COMMUNICATION_ERROR;
goto end;
}
ret = CCID_Receive(reader_index, RxLength, RxBuffer, NULL);
/* T=1 Protocol Management for a TPDU reader */
if ((SCARD_PROTOCOL_T1 == ccid_descriptor->cardProtocol)
&& (CCID_CLASS_TPDU == (ccid_descriptor->dwFeatures & CCID_CLASS_EXCHANGE_MASK)))
{
/* timeout and cancel cases are faked by CCID_Receive() */
if ((2 == *RxLength)
/* the CCID command is rejected or failed */
|| (IFD_SUCCESS != ret))
{
/* Decrement the sequence numbers since no TPDU was sent */
get_ccid_slot(reader_index)->t1.ns ^= 1;
get_ccid_slot(reader_index)->t1.nr ^= 1;
}
else
{
/* get only the T=1 data */
/* FIXME: manage T=1 error blocks */
memmove(RxBuffer, RxBuffer+3, *RxLength -4);
*RxLength -= 4; /* remove NAD, PCB, LEN and CRC */
}
}
end:
ccid_descriptor -> readTimeout = old_read_timeout;
return ret;
} /* SecurePINModify */
/*****************************************************************************
*
* Escape
*
****************************************************************************/
RESPONSECODE CmdEscape(unsigned int reader_index,
const unsigned char TxBuffer[], unsigned int TxLength,
unsigned char RxBuffer[], unsigned int *RxLength, unsigned int timeout)
{
return CmdEscapeCheck(reader_index, TxBuffer, TxLength, RxBuffer, RxLength,
timeout, false);
} /* CmdEscape */
/*****************************************************************************
*
* Escape (with check of gravity)
*
****************************************************************************/
RESPONSECODE CmdEscapeCheck(unsigned int reader_index,
const unsigned char TxBuffer[], unsigned int TxLength,
unsigned char RxBuffer[], unsigned int *RxLength, unsigned int timeout,
bool mayfail)
{
unsigned char *cmd_in, *cmd_out;
int bSeq;
status_t res;
unsigned int length_in, length_out;
RESPONSECODE return_value = IFD_SUCCESS;
int old_read_timeout;
_ccid_descriptor *ccid_descriptor = get_ccid_descriptor(reader_index);
/* a value of 0 do not change the default read timeout */
if (timeout > 0)
{
old_read_timeout = ccid_descriptor -> readTimeout;
ccid_descriptor -> readTimeout = timeout;
}
again:
/* allocate buffers */
length_in = 10 + TxLength;
if (NULL == (cmd_in = malloc(length_in)))
{
return_value = IFD_COMMUNICATION_ERROR;
goto end;
}
length_out = 10 + *RxLength;
if (NULL == (cmd_out = malloc(length_out)))
{
free(cmd_in);
return_value = IFD_COMMUNICATION_ERROR;
goto end;
}
bSeq = (*ccid_descriptor->pbSeq)++;
cmd_in[0] = 0x6B; /* PC_to_RDR_Escape */
i2dw(length_in - 10, cmd_in+1); /* dwLength */
cmd_in[5] = ccid_descriptor->bCurrentSlotIndex; /* slot number */
cmd_in[6] = bSeq;
cmd_in[7] = cmd_in[8] = cmd_in[9] = 0; /* RFU */
/* copy the command */
memcpy(&cmd_in[10], TxBuffer, TxLength);
res = WritePort(reader_index, length_in, cmd_in);
free(cmd_in);
if (res != STATUS_SUCCESS)
{
free(cmd_out);
if (STATUS_NO_SUCH_DEVICE == res)
return_value = IFD_NO_SUCH_DEVICE;
else
return_value = IFD_COMMUNICATION_ERROR;
goto end;
}
time_request:
length_out = 10 + *RxLength;
res = ReadPort(reader_index, &length_out, cmd_out, bSeq);