/*      $NetBSD: descr.c,v 1.6 2015/12/31 20:35:21 jakllsch Exp $       */

/*
* Copyright (c) 1999 Lennart Augustsson <[email protected]>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__RCSID("$NetBSD: descr.c,v 1.6 2015/12/31 20:35:21 jakllsch Exp $");

#include <sys/types.h>

#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>

#include <dev/usb/usb.h>

#include "usbhid.h"
#include "usbvar.h"

report_desc_t
hid_get_report_desc(int fd)
{
       struct usb_ctl_report_desc rep;

       _DIAGASSERT(fd != -1);

       rep.ucrd_size = 0;
       if (ioctl(fd, USB_GET_REPORT_DESC, &rep) < 0)
               return (NULL);

       return hid_use_report_desc(rep.ucrd_data, (unsigned int)rep.ucrd_size);
}

report_desc_t
hid_use_report_desc(const uint8_t *data, unsigned int size)
{
       report_desc_t r;

       r = malloc(sizeof(*r) + size);
       if (r == NULL) {
               errno = ENOMEM;
               return (NULL);
       }
       r->size = size;
       memcpy(r->data, data, size);
       return (r);
}

void
hid_dispose_report_desc(report_desc_t r)
{

       free(r);
}