usb.c File Reference

#include <errno.h>
#include <stdlib.h>
#include "cmd.h"
#include "packet.h"
#include "time.h"
#include "usb.h"

Include dependency graph for usb.c:

Functions
bool	u2f_emu_vdev_usb_has_response (void *state)
	Check the precense of a response from the USB transport. More...
size_t	u2f_emu_vdev_usb_get_response (void *state, uint8_t **data)
	Get the response frim the USB transport. More...
static struct message *	packet_init_handle (struct usb_state *state, const struct packet_init *packet)
	The packet init handler. More...
static struct message *	packet_cont_handle (struct usb_state *state, const struct packet_cont *packet)
	The packet cont handler. More...
void	u2f_emu_vdev_usb_process (void *state, const void *packet, size_t size)
	Process incoming data from an USB HID packet. More...
void	u2f_emu_vdev_usb_state_free (void *state)
	Free the USB state. More...
int	u2f_emu_vdev_usb_state_init (u2f_emu_vdev *vdev, void **state_ref)
	Init the USB state. More...

Variables
transport_info_t	usb_transport
	The USB transport. More...

Function Documentation

static struct message* packet_cont_handle ( struct usb_state *  state, const struct packet_cont *  packet  )

static

The packet cont handler.

Parameters

state	The usb state.
packet	The cont packet.

Returns

Sucess: The response. Failure / No response: NULL.

static struct message* packet_init_handle ( struct usb_state *  state, const struct packet_init *  packet  )

static

The packet init handler.

Parameters

state	The usb state.
packet	The init packet.

Returns

Success: The response. Failure / No response: NULL.

size_t u2f_emu_vdev_usb_get_response	(	void *	state,
		uint8_t **	data
	)

Get the response frim the USB transport.

Parameters

state	The USB transport state.
data	The data ref buffer to put rhe resonse

Returns

The size of the allocated data.

bool u2f_emu_vdev_usb_has_response

(

void *

state

)

Check the precense of a response from the USB transport.

Parameters

state

The USB transport state.

Returns

Has response: true. Has no response: false.

void u2f_emu_vdev_usb_process	(	void *	state,
		const void *	packet,
		size_t	size
	)

Process incoming data from an USB HID packet.

Parameters

state	The USB transport state.
packet	The USB HID packet.
size	The size of the USB HID packet.

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void u2f_emu_vdev_usb_state_free

(

void *

state

)

Free the USB state.

Parameters

state

The USB transport state.

int u2f_emu_vdev_usb_state_init	(	u2f_emu_vdev *	vdev,
		void **	state_ref
	)

Init the USB state.

Parameters

vdev	The virtual device.
state_ref	The USB transport state ref.

Returns

Sucess: 0. Failure: -errno.

Variable Documentation

transport_info_t usb_transport

Initial value:

=
{
    .type = U2F_EMU_USB,
    .state_init = u2f_emu_vdev_usb_state_init,
    .state_free = u2f_emu_vdev_usb_state_free,
    .input_handler = u2f_emu_vdev_usb_process,
    .has_response = u2f_emu_vdev_usb_has_response,
    .get_response = u2f_emu_vdev_usb_get_response
}

The USB transport.