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
43 report_desc_t
hid_get_report_desc(int fd)44 hid_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
55 report_desc_t
hid_use_report_desc(unsigned char * data,unsigned int size)56 hid_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
68 void
hid_dispose_report_desc(report_desc_t r)69 hid_dispose_report_desc(report_desc_t r)
70 {
71
72 free(r);
73 }
74
75 void
hid_get_report_desc_data(report_desc_t d,uint8_t ** data,uint32_t * size)76 hid_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