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keepassxc/src/keys/drivers/YubiKey.h

124 lines
3.2 KiB
C++

/*
* Copyright (C) 2014 Kyle Manna <kyle@kylemanna.com>
* Copyright (C) 2017 KeePassXC Team <team@keepassxc.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 or (at your option)
* version 3 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KEEPASSX_YUBIKEY_H
#define KEEPASSX_YUBIKEY_H
#include <QObject>
#include <QMutex>
/**
* Singleton class to manage the interface to the hardware
*/
class YubiKey : public QObject
{
Q_OBJECT
public:
enum ChallengeResult { ERROR = -1, SUCCESS = 0, WOULDBLOCK, ALREADY_RUNNING };
/**
* @brief YubiKey::instance - get instance of singleton
* @return instance
*/
static YubiKey* instance();
/**
* @brief YubiKey::init - initialize yubikey library and hardware
* @return true on success
*/
bool init();
/**
* @brief YubiKey::deinit - cleanup after init
* @return true on success
*/
bool deinit();
/**
* @brief YubiKey::challenge - issue a challenge
*
* This operation could block if the YubiKey requires a touch to trigger.
*
* TODO: Signal to the UI that the system is waiting for challenge response
* touch.
*
* @param slot YubiKey configuration slot
* @param mayBlock operation is allowed to block
* @param challenge challenge input to YubiKey
* @param response response output from YubiKey
* @return true on success
*/
ChallengeResult challenge(int slot, bool mayBlock, const QByteArray& challenge, QByteArray& response);
/**
* @brief YubiKey::getSerial - serial number of YubiKey
* @param serial serial number
* @return true on success
*/
bool getSerial(unsigned int& serial);
/**
* @brief YubiKey::detect - probe for attached YubiKeys
*/
void detect();
signals:
/** Emitted in response to detect() when a device is found
*
* @slot is the slot number detected
* @blocking signifies if the YK is setup in passive mode or if requires
* the user to touch it for a response
*/
void detected(int slot, bool blocking);
/**
* Emitted when detection is complete
*/
void detectComplete();
/**
* Emitted when the YubiKey was challenged and has returned a response.
*/
void challenged();
/**
* Emitted when no Yubikey could be found.
*/
void notFound();
/**
* Emitted when detection is already running.
*/
void alreadyRunning();
private:
explicit YubiKey();
static YubiKey* m_instance;
// Create void ptr here to avoid ifdef header include mess
void* m_yk_void;
void* m_ykds_void;
QMutex m_mutex;
Q_DISABLE_COPY(YubiKey)
};
#endif // KEEPASSX_YUBIKEY_H