323 lines
9.3 KiB
C
323 lines
9.3 KiB
C
/*
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* Copyright (C) 2010-2013 Frank Morgner
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*
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* This file is part of virtualsmartcard.
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*
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* virtualsmartcard is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation, either version 3 of the License, or (at your option)
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* any later version.
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*
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* virtualsmartcard is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* virtualsmartcard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ifd-vpcd.h"
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#include "vpcd.h"
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#include <debuglog.h>
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#include <errno.h>
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#include <ifdhandler.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* pcscd allows at most 16 readers. We will use 10.
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* See PCSCLITE_MAX_READERS_CONTEXTS in pcsclite.h */
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#define VICC_MAX_SLOTS \
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(PCSCLITE_MAX_READERS_CONTEXTS > 6 ? \
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PCSCLITE_MAX_READERS_CONTEXTS-6 : 1)
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const unsigned char vicc_max_slots = VICC_MAX_SLOTS;
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static struct vicc_ctx *ctx[VICC_MAX_SLOTS];
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const char *hostname = NULL;
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static const char openport[] = "/dev/null";
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RESPONSECODE
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IFDHCreateChannel (DWORD Lun, DWORD Channel)
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{
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size_t slot = Lun & 0xffff;
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if (slot >= vicc_max_slots) {
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return IFD_COMMUNICATION_ERROR;
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}
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if (!hostname)
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Log2(PCSC_LOG_INFO, "Waiting for virtual ICC on port %hu",
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(unsigned short) (Channel+slot));
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ctx[slot] = vicc_init(hostname, Channel+slot);
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if (!ctx[slot]) {
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Log1(PCSC_LOG_ERROR, "Could not initialize connection to virtual ICC");
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return IFD_COMMUNICATION_ERROR;
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}
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if (hostname)
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Log3(PCSC_LOG_INFO, "Connected to virtual ICC on %s port %hu",
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hostname, (unsigned short) (Channel+slot));
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return IFD_SUCCESS;
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}
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RESPONSECODE
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IFDHCreateChannelByName (DWORD Lun, LPSTR DeviceName)
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{
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RESPONSECODE r = IFD_NOT_SUPPORTED;
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char *dots;
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char _hostname[MAX_READERNAME];
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size_t hostname_len;
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unsigned long int port = VPCDPORT;
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dots = strchr(DeviceName, ':');
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if (dots) {
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/* a port has been specified behind the device name */
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hostname_len = dots - DeviceName;
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if (strlen(openport) != hostname_len
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|| strncmp(DeviceName, openport, hostname_len) != 0) {
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/* a hostname other than /dev/null has been specified,
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* so we connect initialize hostname to connect to vicc */
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if (hostname_len < sizeof _hostname)
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memcpy(_hostname, DeviceName, hostname_len);
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else {
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Log3(PCSC_LOG_ERROR, "Not enough memory to hold hostname (have %u, need %u)", sizeof _hostname, hostname_len);
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goto err;
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}
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_hostname[hostname_len] = '\0';
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hostname = _hostname;
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}
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/* skip the ':' */
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dots++;
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errno = 0;
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port = strtoul(dots, NULL, 0);
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if (errno) {
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Log2(PCSC_LOG_ERROR, "Could not parse port: %s", dots);
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goto err;
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}
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} else {
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Log1(PCSC_LOG_INFO, "Using default port.");
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}
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r = IFDHCreateChannel (Lun, port);
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err:
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/* set hostname back to default in case it has been changed */
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hostname = NULL;
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return r;
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}
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RESPONSECODE
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IFDHControl (DWORD Lun, DWORD dwControlCode, PUCHAR TxBuffer, DWORD TxLength,
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PUCHAR RxBuffer, DWORD RxLength, LPDWORD pdwBytesReturned)
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{
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Log9(PCSC_LOG_DEBUG, "IFDHControl not supported (Lun=%u ControlCode=%u TxBuffer=%p TxLength=%u RxBuffer=%p RxLength=%u pBytesReturned=%p)%s",
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(unsigned int) Lun, (unsigned int) dwControlCode,
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(unsigned char *) TxBuffer, (unsigned int) TxLength,
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(unsigned char *) RxBuffer, (unsigned int) RxLength,
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(unsigned int *) pdwBytesReturned, "");
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return IFD_ERROR_NOT_SUPPORTED;
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}
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RESPONSECODE
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IFDHCloseChannel (DWORD Lun)
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{
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size_t slot = Lun & 0xffff;
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if (slot >= vicc_max_slots) {
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return IFD_COMMUNICATION_ERROR;
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}
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if (vicc_exit(ctx[slot]) < 0) {
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Log1(PCSC_LOG_ERROR, "Could not close connection to virtual ICC");
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return IFD_COMMUNICATION_ERROR;
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}
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ctx[slot] = NULL;
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return IFD_SUCCESS;
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}
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RESPONSECODE
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IFDHGetCapabilities (DWORD Lun, DWORD Tag, PDWORD Length, PUCHAR Value)
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{
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unsigned char *atr = NULL;
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ssize_t size;
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size_t slot = Lun & 0xffff;
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if (slot >= vicc_max_slots) {
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return IFD_COMMUNICATION_ERROR;
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}
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if (!Length || !Value)
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return IFD_COMMUNICATION_ERROR;
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switch (Tag) {
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case TAG_IFD_ATR:
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size = vicc_getatr(ctx[slot], &atr);
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if (size < 0) {
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Log1(PCSC_LOG_ERROR, "could not get ATR");
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return IFD_COMMUNICATION_ERROR;
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}
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if (size == 0) {
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Log1(PCSC_LOG_ERROR, "Virtual ICC removed");
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return IFD_ICC_NOT_PRESENT;
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}
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Log2(PCSC_LOG_DEBUG, "Got ATR (%d bytes)", size);
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if (*Length < size) {
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free(atr);
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Log1(PCSC_LOG_ERROR, "Not enough memory for ATR");
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return IFD_COMMUNICATION_ERROR;
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}
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memcpy(Value, atr, size);
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*Length = size;
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free(atr);
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break;
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case TAG_IFD_SLOTS_NUMBER:
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if (*Length < 1) {
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Log1(PCSC_LOG_ERROR, "Invalid input data");
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return IFD_COMMUNICATION_ERROR;
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}
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*Value = vicc_max_slots;
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*Length = 1;
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break;
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case TAG_IFD_SLOT_THREAD_SAFE:
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/* driver supports access to multiple slots of the same reader at
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* the same time */
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*Value = 1;
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*Length = 1;
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break;
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default:
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Log2(PCSC_LOG_DEBUG, "unknown tag %d", (int)Tag);
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return IFD_ERROR_TAG;
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}
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return IFD_SUCCESS;
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}
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RESPONSECODE
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IFDHSetCapabilities (DWORD Lun, DWORD Tag, DWORD Length, PUCHAR Value)
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{
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Log9(PCSC_LOG_DEBUG, "IFDHSetCapabilities not supported (Lun=%u Tag=%u Length=%u Value=%p)%s%s%s%s",
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(unsigned int) Lun, (unsigned int) Tag, (unsigned int) Length,
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(unsigned char *) Value, "", "", "", "");
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return IFD_NOT_SUPPORTED;
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}
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RESPONSECODE
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IFDHSetProtocolParameters (DWORD Lun, DWORD Protocol, UCHAR Flags, UCHAR PTS1,
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UCHAR PTS2, UCHAR PTS3)
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{
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Log9(PCSC_LOG_DEBUG, "Ignoring IFDHSetProtocolParameters (Lun=%u Protocol=%u Flags=%u PTS1=%u PTS2=%u PTS3=%u)%s%s",
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(unsigned int) Lun, (unsigned int) Protocol, (unsigned char) Flags,
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(unsigned char) PTS1, (unsigned char) PTS2, (unsigned char) PTS3, "", "");
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return IFD_SUCCESS;
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}
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RESPONSECODE
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IFDHPowerICC (DWORD Lun, DWORD Action, PUCHAR Atr, PDWORD AtrLength)
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{
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size_t slot = Lun & 0xffff;
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if (slot >= vicc_max_slots) {
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return IFD_COMMUNICATION_ERROR;
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}
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switch (Action) {
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case IFD_POWER_DOWN:
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if (vicc_poweroff(ctx[slot]) < 0) {
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Log1(PCSC_LOG_ERROR, "could not powerdown");
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return IFD_COMMUNICATION_ERROR;
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}
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/* XXX see bug #312754 on https://alioth.debian.org/projects/pcsclite */
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#if 0
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*AtrLength = 0;
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#endif
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return IFD_SUCCESS;
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case IFD_POWER_UP:
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if (vicc_poweron(ctx[slot]) < 0) {
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Log1(PCSC_LOG_ERROR, "could not powerup");
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return IFD_COMMUNICATION_ERROR;
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}
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break;
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case IFD_RESET:
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if (vicc_reset(ctx[slot]) < 0) {
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Log1(PCSC_LOG_ERROR, "could not reset");
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return IFD_COMMUNICATION_ERROR;
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}
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break;
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default:
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Log2(PCSC_LOG_ERROR, "%0lX not supported", Action);
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return IFD_NOT_SUPPORTED;
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}
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return IFDHGetCapabilities (Lun, TAG_IFD_ATR, AtrLength, Atr);
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}
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RESPONSECODE
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IFDHTransmitToICC (DWORD Lun, SCARD_IO_HEADER SendPci, PUCHAR TxBuffer,
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DWORD TxLength, PUCHAR RxBuffer, PDWORD RxLength,
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PSCARD_IO_HEADER RecvPci)
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{
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unsigned char *rapdu = NULL;
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ssize_t size;
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RESPONSECODE r = IFD_COMMUNICATION_ERROR;
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size_t slot = Lun & 0xffff;
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if (slot >= vicc_max_slots) {
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return IFD_COMMUNICATION_ERROR;
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}
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if (!RxLength || !RecvPci) {
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Log1(PCSC_LOG_ERROR, "Invalid input data");
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goto err;
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}
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size = vicc_transmit(ctx[slot], TxLength, TxBuffer, &rapdu);
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if (size < 0) {
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Log1(PCSC_LOG_ERROR, "could not send apdu or receive rapdu");
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goto err;
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}
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if (*RxLength < size) {
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Log1(PCSC_LOG_ERROR, "Not enough memory for rapdu");
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goto err;
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}
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*RxLength = size;
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memcpy(RxBuffer, rapdu, size);
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RecvPci->Protocol = 1;
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r = IFD_SUCCESS;
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err:
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if (r != IFD_SUCCESS && RxLength)
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*RxLength = 0;
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free(rapdu);
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return r;
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}
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RESPONSECODE
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IFDHICCPresence (DWORD Lun)
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{
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size_t slot = Lun & 0xffff;
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if (slot >= vicc_max_slots) {
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return IFD_COMMUNICATION_ERROR;
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}
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switch (vicc_present(ctx[slot])) {
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case 0:
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return IFD_ICC_NOT_PRESENT;
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case 1:
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return IFD_ICC_PRESENT;
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default:
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Log1(PCSC_LOG_ERROR, "Could not get ICC state");
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return IFD_COMMUNICATION_ERROR;
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}
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}
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