diff options
Diffstat (limited to 'hw/usb/u2f.h')
| -rw-r--r-- | hw/usb/u2f.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/hw/usb/u2f.h b/hw/usb/u2f.h new file mode 100644 index 000000000..db30f3586 --- /dev/null +++ b/hw/usb/u2f.h @@ -0,0 +1,92 @@ +/* + * 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 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 */ |