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/*
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ifdhandler.c: IFDH API
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Copyright (C) 2003 Ludovic Rousseau
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <string.h>
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#include "pcscdefines.h"
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#include "defs.h"
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#include "ifdhandler.h"
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#include "config.h"
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#include "debug.h"
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#include "utils.h"
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#include "commands.h"
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#ifdef HAVE_PTHREAD
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#include <pthread.h>
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#endif
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/* Array of structures to hold the ATR and other state value of each slot */
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static CcidDesc CcidSlots[PCSCLITE_MAX_READERS];
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/* global mutex */
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#ifdef HAVE_PTHREAD
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static pthread_mutex_t ifdh_context_mutex = PTHREAD_MUTEX_INITIALIZER;
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#endif
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RESPONSECODE IFDHCreateChannel(DWORD Lun, DWORD Channel)
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{
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/*
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* Lun - Logical Unit Number, use this for multiple card slots or
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* multiple readers. 0xXXXXYYYY - XXXX multiple readers, YYYY multiple
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* slots. The resource manager will set these automatically. By
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* default the resource manager loads a new instance of the driver so
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* if your reader does not have more than one smartcard slot then
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* ignore the Lun in all the functions. Future versions of PC/SC might
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* support loading multiple readers through one instance of the driver
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* in which XXXX would be important to implement if you want this.
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*/
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/*
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* Channel - Channel ID. This is denoted by the following: 0x000001 -
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* /dev/pcsc/1 0x000002 - /dev/pcsc/2 0x000003 - /dev/pcsc/3
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*
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* USB readers may choose to ignore this parameter and query the bus
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* for the particular reader.
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*/
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/*
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* This function is required to open a communications channel to the
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* port listed by Channel. For example, the first serial reader on
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* COM1 would link to /dev/pcsc/1 which would be a sym link to
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* /dev/ttyS0 on some machines This is used to help with intermachine
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* independance.
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*
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* Once the channel is opened the reader must be in a state in which
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* it is possible to query IFDHICCPresence() for card status.
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*
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* returns:
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*
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* IFD_SUCCESS IFD_COMMUNICATION_ERROR
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*/
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RESPONSECODE return_value = IFD_SUCCESS;
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DEBUG_INFO2("lun: %X", Lun);
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if (CheckLun(Lun))
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return IFD_COMMUNICATION_ERROR;
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/* Reset ATR buffer */
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CcidSlots[LunToReaderIndex(Lun)].nATRLength = 0;
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*CcidSlots[LunToReaderIndex(Lun)].pcATRBuffer = '\0';
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/* Reset PowerFlags */
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CcidSlots[LunToReaderIndex(Lun)].bPowerFlags = POWERFLAGS_RAZ;
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#ifdef HAVE_PTHREAD
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pthread_mutex_lock(&ifdh_context_mutex);
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#endif
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if (OpenPort(Lun, Channel) != STATUS_SUCCESS)
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{
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DEBUG_CRITICAL("OpenPort failed");
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return_value = IFD_COMMUNICATION_ERROR;
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}
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#ifdef HAVE_PTHREAD
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pthread_mutex_unlock(&ifdh_context_mutex);
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#endif
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return return_value;
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} /* IFDHCreateChannel */
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RESPONSECODE IFDHCloseChannel(DWORD Lun)
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{
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/*
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* This function should close the reader communication channel for the
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* particular reader. Prior to closing the communication channel the
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* reader should make sure the card is powered down and the terminal
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* is also powered down.
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*
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* returns:
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*
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* IFD_SUCCESS IFD_COMMUNICATION_ERROR
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*/
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DEBUG_INFO2("lun: %X", Lun);
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if (CheckLun(Lun))
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return IFD_COMMUNICATION_ERROR;
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CmdPowerOff(Lun);
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/* No reader status check, if it failed, what can you do ? :) */
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#ifdef HAVE_PTHREAD
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pthread_mutex_lock(&ifdh_context_mutex);
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#endif
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ClosePort(Lun);
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#ifdef HAVE_PTHREAD
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pthread_mutex_unlock(&ifdh_context_mutex);
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#endif
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return IFD_SUCCESS;
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} /* IFDHCloseChannel */
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RESPONSECODE IFDHGetCapabilities(DWORD Lun, DWORD Tag,
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PDWORD Length, PUCHAR Value)
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{
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/*
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* This function should get the slot/card capabilities for a
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* particular slot/card specified by Lun. Again, if you have only 1
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* card slot and don't mind loading a new driver for each reader then
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* ignore Lun.
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*
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* Tag - the tag for the information requested example: TAG_IFD_ATR -
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* return the Atr and it's size (required). these tags are defined in
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* ifdhandler.h
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*
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* Length - the length of the returned data Value - the value of the
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* data
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*
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* returns:
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*
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* IFD_SUCCESS IFD_ERROR_TAG
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*/
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DEBUG_INFO3("lun: %X, tag: %02X", Lun, Tag);
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if (CheckLun(Lun))
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return IFD_COMMUNICATION_ERROR;
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switch (Tag)
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{
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case TAG_IFD_ATR:
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/* If Length is not zero, powerICC has been performed.
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* Otherwise, return NULL pointer
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* Buffer size is stored in *Length */
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*Length = (*Length < CcidSlots[LunToReaderIndex(Lun)]
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.nATRLength) ?
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*Length : CcidSlots[LunToReaderIndex(Lun)]
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.nATRLength;
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if (*Length)
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memcpy(Value, CcidSlots[LunToReaderIndex(Lun)]
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.pcATRBuffer, *Length);
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break;
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#ifdef HAVE_PTHREAD
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case TAG_IFD_SIMULTANEOUS_ACCESS:
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if (*Length >= 1)
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{
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*Length = 1;
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*Value = PCSCLITE_MAX_READERS;
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}
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break;
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case TAG_IFD_THREAD_SAFE:
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if (*Length >= 1)
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{
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*Length = 1;
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*Value = 1; /* Can talk to multiple readers at the same time */
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}
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break;
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#endif
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case TAG_IFD_SLOTS_NUMBER:
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if (*Length >= 1)
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{
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*Length = 1;
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*Value = 1; /* One slot only */
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}
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break;
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default:
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return IFD_ERROR_TAG;
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}
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return IFD_SUCCESS;
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} /* IFDHGetCapabilities */
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RESPONSECODE IFDHSetCapabilities(DWORD Lun, DWORD Tag,
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DWORD Length, PUCHAR Value)
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{
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/*
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* This function should set the slot/card capabilities for a
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* particular slot/card specified by Lun. Again, if you have only 1
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* card slot and don't mind loading a new driver for each reader then
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* ignore Lun.
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*
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* Tag - the tag for the information needing set
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*
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* Length - the length of the returned data Value - the value of the
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* data
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*
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* returns:
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*
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* IFD_SUCCESS IFD_ERROR_TAG IFD_ERROR_SET_FAILURE
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* IFD_ERROR_VALUE_READ_ONLY
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*/
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/* By default, say it worked */
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DEBUG_PERIODIC2("lun: %X", Lun);
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/* if (CheckLun(Lun))
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return IFD_COMMUNICATION_ERROR; */
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return IFD_NOT_SUPPORTED;
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} /* IFDHSetCapabilities */
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|
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RESPONSECODE IFDHSetProtocolParameters(DWORD Lun, DWORD Protocol,
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UCHAR Flags, UCHAR PTS1, UCHAR PTS2, UCHAR PTS3)
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{
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/*
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* This function should set the PTS of a particular card/slot using
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* the three PTS parameters sent
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*
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* Protocol - 0 .... 14 T=0 .... T=14 Flags - Logical OR of possible
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* values: IFD_NEGOTIATE_PTS1 IFD_NEGOTIATE_PTS2 IFD_NEGOTIATE_PTS3 to
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* determine which PTS values to negotiate. PTS1,PTS2,PTS3 - PTS
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* Values.
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*
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* returns:
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*
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* IFD_SUCCESS IFD_ERROR_PTS_FAILURE IFD_COMMUNICATION_ERROR
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* IFD_PROTOCOL_NOT_SUPPORTED
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*/
|
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DEBUG_INFO2("lun: %X", Lun);
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| 273 |
/* if (CheckLun(Lun))
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return IFD_COMMUNICATION_ERROR; */
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return IFD_NOT_SUPPORTED;
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} /* IFDHSetProtocolParameters */
|
| 278 |
|
| 279 |
|
| 280 |
RESPONSECODE IFDHPowerICC(DWORD Lun, DWORD Action,
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PUCHAR Atr, PDWORD AtrLength)
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{
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| 283 |
/*
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* This function controls the power and reset signals of the smartcard
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| 285 |
* reader at the particular reader/slot specified by Lun.
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*
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* Action - Action to be taken on the card.
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*
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* IFD_POWER_UP - Power and reset the card if not done so (store the
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* ATR and return it and it's length).
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*
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* IFD_POWER_DOWN - Power down the card if not done already
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* (Atr/AtrLength should be zero'd)
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*
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| 295 |
* IFD_RESET - Perform a quick reset on the card. If the card is not
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| 296 |
* powered power up the card. (Store and return the Atr/Length)
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| 297 |
*
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* Atr - Answer to Reset of the card. The driver is responsible for
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* caching this value in case IFDHGetCapabilities is called requesting
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* the ATR and it's length. This should not exceed MAX_ATR_SIZE.
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*
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* AtrLength - Length of the Atr. This should not exceed
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* MAX_ATR_SIZE.
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*
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* Notes:
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*
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* Memory cards without an ATR should return IFD_SUCCESS on reset but
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* the Atr should be zero'd and the length should be zero
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*
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* Reset errors should return zero for the AtrLength and return
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* IFD_ERROR_POWER_ACTION.
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*
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* returns:
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*
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* IFD_SUCCESS IFD_ERROR_POWER_ACTION IFD_COMMUNICATION_ERROR
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| 316 |
* IFD_NOT_SUPPORTED
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*/
|
| 318 |
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int nlength;
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RESPONSECODE return_value = IFD_SUCCESS;
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unsigned char pcbuffer[RESP_BUF_SIZE];
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DEBUG_INFO2("lun: %X", Lun);
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| 325 |
/* By default, assume it won't work :) */
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*AtrLength = 0;
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|
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if (CheckLun(Lun))
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return IFD_COMMUNICATION_ERROR;
|
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switch (Action)
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{
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case IFD_POWER_UP:
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case IFD_RESET:
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nlength = sizeof(pcbuffer);
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if (CmdPowerOn(Lun, &nlength, pcbuffer) != IFD_SUCCESS)
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{
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DEBUG_CRITICAL("PowerUp failed");
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return_value = IFD_ERROR_POWER_ACTION;
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goto end;
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}
|
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/* Power up successful, set state variable to memorise it */
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CcidSlots[LunToReaderIndex(Lun)].bPowerFlags |=
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MASK_POWERFLAGS_PUP;
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| 346 |
CcidSlots[LunToReaderIndex(Lun)].bPowerFlags &=
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~MASK_POWERFLAGS_PDWN;
|
| 348 |
|
| 349 |
/* Reset is returned, even if TCK is wrong */
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| 350 |
CcidSlots[LunToReaderIndex(Lun)].nATRLength = *AtrLength =
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(nlength < MAX_ATR_SIZE) ? nlength : MAX_ATR_SIZE;
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memcpy(Atr, pcbuffer, *AtrLength);
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memcpy(CcidSlots[LunToReaderIndex(Lun)].pcATRBuffer,
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pcbuffer, *AtrLength);
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| 355 |
break;
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| 356 |
|
| 357 |
case IFD_POWER_DOWN:
|
| 358 |
/* Clear ATR buffer */
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| 359 |
CcidSlots[LunToReaderIndex(Lun)].nATRLength = 0;
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| 360 |
*CcidSlots[LunToReaderIndex(Lun)].pcATRBuffer = '\0';
|
| 361 |
|
| 362 |
/* Memorise the request */
|
| 363 |
CcidSlots[LunToReaderIndex(Lun)].bPowerFlags |=
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| 364 |
MASK_POWERFLAGS_PDWN;
|
| 365 |
/* send the command */
|
| 366 |
return_value = CmdPowerOff(Lun);
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| 367 |
break;
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| 368 |
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| 369 |
default:
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| 370 |
DEBUG_CRITICAL("IFDHPowerICC Action not supported");
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| 371 |
return_value = IFD_NOT_SUPPORTED;
|
| 372 |
}
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end:
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| 374 |
|
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return return_value;
|
| 376 |
} /* IFDHPowerICC */
|
| 377 |
|
| 378 |
|
| 379 |
RESPONSECODE IFDHTransmitToICC(DWORD Lun, SCARD_IO_HEADER SendPci,
|
| 380 |
PUCHAR TxBuffer, DWORD TxLength,
|
| 381 |
PUCHAR RxBuffer, PDWORD RxLength, PSCARD_IO_HEADER RecvPci)
|
| 382 |
{
|
| 383 |
/*
|
| 384 |
* This function performs an APDU exchange with the card/slot
|
| 385 |
* specified by Lun. The driver is responsible for performing any
|
| 386 |
* protocol specific exchanges such as T=0/1 ... differences. Calling
|
| 387 |
* this function will abstract all protocol differences.
|
| 388 |
*
|
| 389 |
* SendPci Protocol - 0, 1, .... 14 Length - Not used.
|
| 390 |
*
|
| 391 |
* TxBuffer - Transmit APDU example (0x00 0xA4 0x00 0x00 0x02 0x3F
|
| 392 |
* 0x00) TxLength - Length of this buffer. RxBuffer - Receive APDU
|
| 393 |
* example (0x61 0x14) RxLength - Length of the received APDU. This
|
| 394 |
* function will be passed the size of the buffer of RxBuffer and this
|
| 395 |
* function is responsible for setting this to the length of the
|
| 396 |
* received APDU. This should be ZERO on all errors. The resource
|
| 397 |
* manager will take responsibility of zeroing out any temporary APDU
|
| 398 |
* buffers for security reasons.
|
| 399 |
*
|
| 400 |
* RecvPci Protocol - 0, 1, .... 14 Length - Not used.
|
| 401 |
*
|
| 402 |
* Notes: The driver is responsible for knowing what type of card it
|
| 403 |
* has. If the current slot/card contains a memory card then this
|
| 404 |
* command should ignore the Protocol and use the MCT style commands
|
| 405 |
* for support for these style cards and transmit them appropriately.
|
| 406 |
* If your reader does not support memory cards or you don't want to
|
| 407 |
* then ignore this.
|
| 408 |
*
|
| 409 |
* RxLength should be set to zero on error.
|
| 410 |
*
|
| 411 |
* returns:
|
| 412 |
*
|
| 413 |
* IFD_SUCCESS IFD_COMMUNICATION_ERROR IFD_RESPONSE_TIMEOUT
|
| 414 |
* IFD_ICC_NOT_PRESENT IFD_PROTOCOL_NOT_SUPPORTED
|
| 415 |
*/
|
| 416 |
|
| 417 |
RESPONSECODE return_value;
|
| 418 |
int rx_length;
|
| 419 |
|
| 420 |
DEBUG_INFO2("lun: %X", Lun);
|
| 421 |
|
| 422 |
if (CheckLun(Lun))
|
| 423 |
return IFD_COMMUNICATION_ERROR;
|
| 424 |
|
| 425 |
rx_length = *RxLength;
|
| 426 |
switch (SendPci.Protocol)
|
| 427 |
{
|
| 428 |
case T_0:
|
| 429 |
case T_1:
|
| 430 |
return_value = CmdXfrBlock(Lun, TxLength, TxBuffer, &rx_length,
|
| 431 |
RxBuffer);
|
| 432 |
break;
|
| 433 |
|
| 434 |
default:
|
| 435 |
return_value = IFD_PROTOCOL_NOT_SUPPORTED;
|
| 436 |
}
|
| 437 |
*RxLength = rx_length;
|
| 438 |
|
| 439 |
return return_value;
|
| 440 |
} /* IFDHTransmitToICC */
|
| 441 |
|
| 442 |
|
| 443 |
RESPONSECODE IFDHControl(DWORD Lun, PUCHAR TxBuffer,
|
| 444 |
DWORD TxLength, PUCHAR RxBuffer, PDWORD RxLength)
|
| 445 |
{
|
| 446 |
/*
|
| 447 |
* This function performs a data exchange with the reader (not the
|
| 448 |
* card) specified by Lun. Here XXXX will only be used. It is
|
| 449 |
* responsible for abstracting functionality such as PIN pads,
|
| 450 |
* biometrics, LCD panels, etc. You should follow the MCT, CTBCS
|
| 451 |
* specifications for a list of accepted commands to implement.
|
| 452 |
*
|
| 453 |
* TxBuffer - Transmit data TxLength - Length of this buffer. RxBuffer
|
| 454 |
* - Receive data RxLength - Length of the received data. This
|
| 455 |
* function will be passed the length of the buffer RxBuffer and it
|
| 456 |
* must set this to the length of the received data.
|
| 457 |
*
|
| 458 |
* Notes: RxLength should be zero on error.
|
| 459 |
*/
|
| 460 |
|
| 461 |
DEBUG_INFO2("lun: %X", Lun);
|
| 462 |
|
| 463 |
/* if (CheckLun(Lun))
|
| 464 |
return IFD_COMMUNICATION_ERROR; */
|
| 465 |
|
| 466 |
/* Set the return length to 0 to avoid problems */
|
| 467 |
if (RxLength)
|
| 468 |
*RxLength = 0;
|
| 469 |
|
| 470 |
return IFD_NOT_SUPPORTED;
|
| 471 |
} /* IFDHControl */
|
| 472 |
|
| 473 |
|
| 474 |
RESPONSECODE IFDHICCPresence(DWORD Lun)
|
| 475 |
{
|
| 476 |
/*
|
| 477 |
* This function returns the status of the card inserted in the
|
| 478 |
* reader/slot specified by Lun. It will return either:
|
| 479 |
*
|
| 480 |
* returns: IFD_ICC_PRESENT IFD_ICC_NOT_PRESENT
|
| 481 |
* IFD_COMMUNICATION_ERROR
|
| 482 |
*/
|
| 483 |
|
| 484 |
unsigned char pcbuffer[SIZE_GET_SLOT_STATUS];
|
| 485 |
RESPONSECODE return_value = IFD_COMMUNICATION_ERROR;
|
| 486 |
|
| 487 |
DEBUG_PERIODIC2("lun: %X", Lun);
|
| 488 |
|
| 489 |
if (CheckLun(Lun))
|
| 490 |
return IFD_COMMUNICATION_ERROR;
|
| 491 |
|
| 492 |
if (CmdGetSlotStatus(Lun, pcbuffer) != IFD_SUCCESS)
|
| 493 |
return IFD_COMMUNICATION_ERROR;
|
| 494 |
|
| 495 |
switch (pcbuffer[7]) /* bStatus */
|
| 496 |
{
|
| 497 |
case 0x00:
|
| 498 |
return_value = IFD_ICC_PRESENT;
|
| 499 |
break;
|
| 500 |
|
| 501 |
case 0x01:
|
| 502 |
return_value = IFD_ICC_PRESENT;
|
| 503 |
break;
|
| 504 |
|
| 505 |
case 0x02:
|
| 506 |
return_value = IFD_ICC_NOT_PRESENT;
|
| 507 |
break;
|
| 508 |
}
|
| 509 |
|
| 510 |
return return_value;
|
| 511 |
} /* IFDHICCPresence */
|
| 512 |
|
| 513 |
|
| 514 |
CcidDesc *get_ccid_slot(int lun)
|
| 515 |
{
|
| 516 |
return &CcidSlots[LunToReaderIndex(lun)];
|
| 517 |
} /* get_ccid_slot */
|
| 518 |
|
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