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- //
- // Created by robin on 6/28/15.
- //
-
- #include <winscard.h>
- #include <vector>
- #include <string.h>
- #include "libpcsc_cpptools/ScReader.h"
-
- /*thread_local*/ LPSCARDCONTEXT ScReader::_context = nullptr;
- /*thread_local*/ LONG ScReader::_lastStaticResult = SCARD_S_SUCCESS;
-
- ScReader::~ScReader()
- {
- disconnect();
- }
-
- bool ScReader::establishContext()
- {
- if (!freeContext())
- return false;
- _context = new SCARDCONTEXT[1];
- _lastStaticResult = SCardEstablishContext(SCARD_SCOPE_SYSTEM, nullptr, nullptr, _context);
- return _lastStaticResult == SCARD_S_SUCCESS;
- }
-
- bool ScReader::freeContext()
- {
- if (!_context)
- return true;
- _lastStaticResult = SCardReleaseContext(*_context);
- delete[] _context;
- _context = nullptr;
- return _lastStaticResult == SCARD_S_SUCCESS;
- }
-
- bool ScReader::connect(DWORD shareMode, DWORD protocols, DWORD disposition)
- {
- if (!disconnect(disposition))
- return false;
- _card = new SCARDCONTEXT[1];
- _proto = new DWORD[1];
- _lastResult = SCardConnect(*_context, _name.c_str(), shareMode, protocols, _card, _proto);
- if (*_proto == SCARD_PROTOCOL_T0)
- _sendPci = *SCARD_PCI_T0;
- if (*_proto == SCARD_PROTOCOL_T1)
- _sendPci = *SCARD_PCI_T1;
- return _lastResult == SCARD_S_SUCCESS;
- }
-
- bool ScReader::disconnect(DWORD disposition)
- {
- if (!_card)
- return true;
- _lastResult = SCardDisconnect(*_card, disposition);
- delete[] _proto;
- _proto = nullptr;
- delete[] _card;
- _card = nullptr;
- return _lastResult == SCARD_S_SUCCESS;
- }
-
- std::shared_ptr<ScResult> ScReader::transmit(const ScCommand& command, DWORD size)
- {
- auto data = command.getData();
- auto resBuffer = new BYTE[size];
- _lastResult = SCardTransmit(*_card, &_sendPci, (BYTE*)data.data(), data.size(), nullptr, resBuffer, &size);
- if (_lastResult == SCARD_S_SUCCESS)
- return std::make_shared<ScResult>(std::string((char*)resBuffer, size));
- return std::make_shared<ScResult>("");
- }
-
- std::vector<std::shared_ptr<ScReader>> ScReader::getReaders()
- {
- std::vector<std::shared_ptr<ScReader>> readers;
- DWORD readerCount = SCARD_AUTOALLOCATE;
- LPTSTR readersNames = nullptr;
- _lastStaticResult = SCardListReaders(*_context, nullptr, (LPTSTR)&readersNames, &readerCount);
- if (_lastStaticResult == SCARD_S_SUCCESS)
- {
- LPTSTR reader = readersNames;
- while (*reader)
- {
- readers.push_back(std::make_shared<ScReader>(reader));
- reader += strlen(reader) + 1;
- }
- }
- SCardFreeMemory(*_context, readersNames);
- return readers;
- }
-
- std::string ScReader::getAttribute(DWORD attr)
- {
- DWORD len = SCARD_AUTOALLOCATE;
- BYTE* data = nullptr;
- _lastResult = SCardGetAttrib(*_card, attr, (BYTE*)&data, &len);
- std::string str((char*)data, len);
- SCardFreeMemory(*_context, data);
- if (_lastResult == SCARD_S_SUCCESS)
- return str;
- return std::string();
- }
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