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/*
* U2F USB device.
*
* Copyright (c) 2020 César Belley <cesar.belley@lse.epita.fr>
* Written by César Belley <cesar.belley@lse.epita.fr>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef U2F_H
#define U2F_H
#include "hw/qdev-core.h"
#define U2FHID_PACKET_SIZE 64
#define U2FHID_PENDING_IN_NUM 32
typedef struct U2FKeyState U2FKeyState;
typedef struct U2FKeyInfo U2FKeyInfo;
#define TYPE_U2F_KEY "u2f-key"
#define U2F_KEY(obj) \
OBJECT_CHECK(U2FKeyState, (obj), TYPE_U2F_KEY)
#define U2F_KEY_CLASS(klass) \
OBJECT_CLASS_CHECK(U2FKeyClass, (klass), TYPE_U2F_KEY)
#define U2F_KEY_GET_CLASS(obj) \
OBJECT_GET_CLASS(U2FKeyClass, (obj), TYPE_U2F_KEY)
/*
* Callbacks to be used by the U2F key base device (i.e. hw/u2f.c)
* to interact with its variants (i.e. hw/u2f-*.c)
*/
typedef struct U2FKeyClass {
/*< private >*/
USBDeviceClass parent_class;
/*< public >*/
void (*recv_from_guest)(U2FKeyState *key,
const uint8_t packet[U2FHID_PACKET_SIZE]);
void (*realize)(U2FKeyState *key, Error **errp);
void (*unrealize)(U2FKeyState *key);
} U2FKeyClass;
/*
* State of the U2F key base device (i.e. hw/u2f.c)
*/
typedef struct U2FKeyState {
USBDevice dev;
USBEndpoint *ep;
uint8_t idle;
/* Pending packets to be send to the guest */
uint8_t pending_in[U2FHID_PENDING_IN_NUM][U2FHID_PACKET_SIZE];
uint8_t pending_in_start;
uint8_t pending_in_end;
uint8_t pending_in_num;
} U2FKeyState;
/*
* API to be used by the U2F key device variants (i.e. hw/u2f-*.c)
* to interact with the U2F key base device (i.e. hw/u2f.c)
*/
void u2f_send_to_guest(U2FKeyState *key,
const uint8_t packet[U2FHID_PACKET_SIZE]);
extern const VMStateDescription vmstate_u2f_key;
#define VMSTATE_U2F_KEY(_field, _state) { \
.name = (stringify(_field)), \
.size = sizeof(U2FKeyState), \
.vmsd = &vmstate_u2f_key, \
.flags = VMS_STRUCT, \
.offset = vmstate_offset_value(_state, _field, U2FKeyState), \
}
#endif /* U2F_H */
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