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301 lines
8.0 KiB
301 lines
8.0 KiB
/* This file is part of the TDE libraries
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Copyright (C) 2015 Timothy Pearson <kb9vqf@pearsoncomputing.net>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "tdecryptographiccarddevice_private.h"
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#include "tdecryptographiccarddevice.h"
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#include <tqpixmap.h>
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#include <tqtimer.h>
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#include <ntqthread.h>
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#include <ntqeventloop.h>
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#include <ntqapplication.h>
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#include "tdeglobal.h"
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#include "tdelocale.h"
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#include "tdehardwaredevices.h"
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#include "config.h"
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// 1 second
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#define PCSC_POLL_TIMEOUT_S 1000
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/* FIXME
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* This is incomplete
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*/
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#ifdef WITH_PCSC
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static TQString pcsc_error_code_to_string(long errcode) {
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if (errcode == SCARD_W_UNPOWERED_CARD) {
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return i18n("card not powered on");
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}
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else if (errcode == SCARD_E_PROTO_MISMATCH) {
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return i18n("protocol mismatch");
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}
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else {
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return TQString::null;
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}
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}
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#endif
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CryptoCardDeviceWatcher::CryptoCardDeviceWatcher() {
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m_readerStates = NULL;
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}
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CryptoCardDeviceWatcher::~CryptoCardDeviceWatcher() {
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free(m_readerStates);
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}
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void CryptoCardDeviceWatcher::run() {
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#ifdef WITH_PCSC
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bool first_loop;
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unsigned int i;
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long ret;
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DWORD dword_readers;
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LPSTR lpstring_readers = NULL;
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TQStringList readers;
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first_loop = true;
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m_terminationRequested = false;
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TQEventLoop* eventLoop = TQApplication::eventLoop();
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if (!eventLoop) return;
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ret = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &m_cardContext);
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if (ret != SCARD_S_SUCCESS) {
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printf("TDECryptographicCardDevice: PCSC SCardEstablishContext cannot connect to resource manager (%lX)", ret);
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eventLoop->exit(0);
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return;
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}
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ret = SCardListReaders(m_cardContext, NULL, NULL, &dword_readers);
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if (ret == SCARD_S_SUCCESS) {
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lpstring_readers = (LPSTR)malloc(sizeof(char)*dword_readers);
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if (lpstring_readers == NULL) {
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printf("TDECryptographicCardDevice: insufficient memory, aborting");
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eventLoop->exit(0);
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return;
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}
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ret = SCardListReaders(m_cardContext, NULL, lpstring_readers, &dword_readers);
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if (ret == SCARD_S_SUCCESS) {
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/* Extract reader names from the null separated string */
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char *ptr = lpstring_readers;
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while (*ptr != '\0') {
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readers.append(ptr);
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ptr += strlen(ptr)+1;
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}
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free(lpstring_readers);
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m_readerStates = (SCARD_READERSTATE*)calloc(readers.count(), sizeof(*m_readerStates));
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if (m_readerStates == NULL) {
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printf("TDECryptographicCardDevice: insufficient memory, aborting");
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free(lpstring_readers);
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eventLoop->exit(0);
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return;
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}
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for (i=0; i<readers.count(); i++) {
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m_readerStates[i].szReader = strdup(readers[i].ascii());
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m_readerStates[i].dwCurrentState = SCARD_STATE_UNAWARE;
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}
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ret = SCardGetStatusChange(m_cardContext, PCSC_POLL_TIMEOUT_S, m_readerStates, readers.count());
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while ((ret == SCARD_S_SUCCESS) || (ret == SCARD_E_TIMEOUT)) {
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if (m_terminationRequested) {
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for (i=0; i<readers.count(); i++) {
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free((char*)m_readerStates[i].szReader);
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}
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eventLoop->exit(0);
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return;
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}
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for (i=0; i<readers.count(); i++) {
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/* FIXME
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* Find a better / more reliable way to match the card low level device to the PCSC name
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*/
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if (!readers[i].contains(cardDevice->friendlyName())) {
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continue;
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}
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if (first_loop) {
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if (m_readerStates[i].dwEventState & SCARD_STATE_PRESENT) {
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// sleep(1); // Allow the card to settle
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statusChanged("PRESENT", getCardATR(readers[i]));
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}
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first_loop = false;
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}
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if (m_readerStates[i].dwEventState & SCARD_STATE_CHANGED) {
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if ((m_readerStates[i].dwCurrentState & SCARD_STATE_PRESENT)
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&& (m_readerStates[i].dwEventState & SCARD_STATE_EMPTY)) {
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statusChanged("REMOVED", TQString::null);
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}
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else if ((m_readerStates[i].dwCurrentState & SCARD_STATE_EMPTY)
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&& (m_readerStates[i].dwEventState & SCARD_STATE_PRESENT)) {
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// sleep(1); // Allow the card to settle
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statusChanged("INSERTED", getCardATR(readers[i]));
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}
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m_readerStates[i].dwCurrentState = m_readerStates[i].dwEventState;
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}
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else {
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continue;
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}
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}
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ret = SCardGetStatusChange(m_cardContext, PCSC_POLL_TIMEOUT_S, m_readerStates, readers.count());
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}
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}
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}
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eventLoop->exit(0);
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#endif
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}
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void CryptoCardDeviceWatcher::requestTermination() {
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m_terminationRequested = true;
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}
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TQString CryptoCardDeviceWatcher::getCardATR(TQString readerName) {
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#ifdef WITH_PCSC
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unsigned int i;
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long ret;
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TQString atr_formatted;
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SCARDHANDLE hCard = 0;
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DWORD dwActiveProtocol = 0;
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DWORD cByte = 0;
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ret = SCardConnect(m_cardContext, readerName.ascii(), SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, &hCard, &dwActiveProtocol);
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if (ret == SCARD_S_SUCCESS) {
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ret = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, NULL, &cByte);
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if (ret == SCARD_S_SUCCESS) {
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char* data = new char[cByte];
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ret = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, (LPBYTE)data, &cByte);
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atr_formatted = TQString::null;
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for (i=0; i<cByte; i++) {
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TQString formatted;
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formatted.sprintf("%02x ", ((uint8_t)(*(data+i))));
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atr_formatted.append(formatted.upper());
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}
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atr_formatted = atr_formatted.stripWhiteSpace();
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free(data);
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SCardDisconnect(hCard, SCARD_LEAVE_CARD);
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}
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}
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else {
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TQString errstring = pcsc_error_code_to_string(ret);
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if (errstring != "") {
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atr_formatted = i18n("Unknown (%1)").arg(errstring);
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}
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else {
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atr_formatted = TQString("CARD_CONNECT_FAIL (%1)").arg(ret, 0, 16);
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}
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}
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return atr_formatted;
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#endif
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}
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TDECryptographicCardDevice::TDECryptographicCardDevice(TDEGenericDeviceType::TDEGenericDeviceType dt, TQString dn) : TDEGenericDevice(dt, dn),
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m_watcherThread(NULL),
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m_watcherObject(NULL),
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m_cardPresent(false) {
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//
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}
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TDECryptographicCardDevice::~TDECryptographicCardDevice() {
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enableCardMonitoring(false);
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}
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void TDECryptographicCardDevice::enableCardMonitoring(bool enable) {
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#ifdef WITH_PCSC
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if (enable) {
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if (m_watcherObject && m_watcherThread) {
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// Monitoring thread already active; abort!
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return;
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}
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m_watcherThread = new TQEventLoopThread();
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m_watcherObject = new CryptoCardDeviceWatcher();
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m_watcherObject->cardDevice = this;
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m_watcherObject->moveToThread(m_watcherThread);
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TQObject::connect(m_watcherObject, SIGNAL(statusChanged(TQString,TQString)), this, SLOT(cardStatusChanged(TQString,TQString)));
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TQTimer::singleShot(0, m_watcherObject, SLOT(run()));
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m_watcherThread->start();
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}
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else {
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if (m_watcherObject) {
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m_watcherObject->requestTermination();
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delete m_watcherObject;
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m_watcherObject = NULL;
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}
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if (m_watcherThread) {
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m_watcherThread->wait();
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delete m_watcherThread;
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m_watcherThread = NULL;
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}
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}
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#endif
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}
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int TDECryptographicCardDevice::cardPresent() {
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if (m_watcherObject && m_watcherThread) {
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if (m_cardPresent)
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return 1;
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else
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return 0;
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}
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else {
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return -1;
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}
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}
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TQString TDECryptographicCardDevice::cardATR() {
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if (m_watcherObject && m_watcherThread) {
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if (m_cardPresent)
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return m_cardATR;
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else
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return TQString::null;
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}
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else {
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return TQString::null;
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}
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}
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void TDECryptographicCardDevice::cardStatusChanged(TQString status, TQString atr) {
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if (status == "INSERTED") {
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m_cardPresent = true;
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m_cardATR = atr;
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emit(cardInserted());
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}
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else if (status == "REMOVED") {
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m_cardPresent = false;
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m_cardATR = atr;
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emit(cardRemoved());
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}
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else if (status == "PRESENT") {
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m_cardATR = atr;
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m_cardPresent = true;
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}
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}
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#include "tdecryptographiccarddevice.moc"
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#include "tdecryptographiccarddevice_private.moc"
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