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