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/* $OpenBSD: fido.c,v 1.3 2021/03/08 14:35:57 jcs Exp $ */
/*
* Copyright (c) 2019 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "fido.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/signalvar.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/selinfo.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/poll.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/uhidev.h>
#include <dev/usb/uhid.h>
int fido_match(struct device *, void *, void *);
struct cfdriver fido_cd = {
NULL, "fido", DV_DULL
};
const struct cfattach fido_ca = {
sizeof(struct uhid_softc),
fido_match,
uhid_attach,
uhid_detach,
};
int
fido_match(struct device *parent, void *match, void *aux)
{
struct uhidev_attach_arg *uha = (struct uhidev_attach_arg *)aux;
int size;
void *desc;
int ret = UMATCH_NONE;
if (uha->reportid == UHIDEV_CLAIM_MULTIPLE_REPORTID)
return (ret);
/* Find the FIDO usage page and U2F collection */
uhidev_get_report_desc(uha->parent, &desc, &size);
if (hid_is_collection(desc, size, uha->reportid,
HID_USAGE2(HUP_FIDO, HUF_U2FHID)))
ret = UMATCH_IFACECLASS;
return (ret);
}
int
fidoopen(dev_t dev, int flag, int mode, struct proc *p)
{
return (uhid_do_open(dev, flag, mode, p));
}
int
fidoioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
int error;
switch (cmd) {
case FIONBIO:
case FIOASYNC:
case USB_GET_DEVICEINFO:
break;
default:
/*
* Users don't need USB/HID ioctl access to fido(4) devices
* but it can still be useful for debugging by root.
*/
if ((error = suser(p)) != 0)
return (error);
break;
}
return (uhidioctl(dev, cmd, addr, flag, p));
}
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