IABSD.fr/src/sys/dev/usb/fido.c

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• Author : deraadt
  Date : 2019-12-18 05:09:53
  Hash : a4a02513
  Message : undo assumptions about MI .h inclusions

• sys/dev/usb/fido.c

• /*	$OpenBSD: fido.c,v 1.2 2019/12/18 05:09:53 deraadt 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_ALLREPORTID)
  		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));
  }