1/* $OpenBSD: descr.c,v 1.8 2021/05/30 19:54:52 jcs Exp $ */ 2/* $NetBSD: descr.c,v 1.2 2002/02/20 20:31:07 christos Exp $ */ 3 4/* 5 * Copyright (c) 1999 Lennart Augustsson <augustss@netbsd.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/types.h> 31 32#include <errno.h> 33#include <stdlib.h> 34#include <string.h> 35#include <unistd.h> 36#include <sys/time.h> 37 38#include <dev/usb/usb.h> 39 40#include "usbhid.h" 41#include "usbvar.h" 42 43report_desc_t 44hid_get_report_desc(int fd) 45{ 46 struct usb_ctl_report_desc rep; 47 48 rep.ucrd_size = 0; 49 if (ioctl(fd, USB_GET_REPORT_DESC, &rep) == -1) 50 return (NULL); 51 52 return hid_use_report_desc(rep.ucrd_data, (unsigned int)rep.ucrd_size); 53} 54 55report_desc_t 56hid_use_report_desc(unsigned char *data, unsigned int size) 57{ 58 report_desc_t r; 59 60 r = malloc(sizeof(*r) + size); 61 if (r == NULL) 62 return (NULL); 63 r->size = size; 64 memcpy(r->data, data, size); 65 return (r); 66} 67 68void 69hid_dispose_report_desc(report_desc_t r) 70{ 71 72 free(r); 73} 74 75void 76hid_get_report_desc_data(report_desc_t d, uint8_t **data, uint32_t *size) 77{ 78 *data = d->data; 79 *size = d->size; 80} 81