usb4bsd: Adjust header paths in libusbhid, usbhidctl, and public headers.
[dragonfly.git] / lib / libu4bhid / descr.c
CommitLineData
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1/* $NetBSD: descr.c,v 1.9 2000/09/24 02:13:24 augustss Exp $ */
2
3/*
4 * Copyright (c) 1999 Lennart Augustsson <augustss@netbsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
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29#include <sys/types.h>
30
31#include <assert.h>
32#include <errno.h>
33#include <stdlib.h>
34#include <string.h>
35#include <unistd.h>
36#include <sys/time.h>
37#include <sys/ioctl.h>
3186c89e 38#include <bus/u4b/usb_ioctl.h>
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39
40#include "usbhid.h"
41#include "usbvar.h"
42
43int
44hid_set_immed(int fd, int enable)
45{
46 int ret;
47 ret = ioctl(fd, USB_SET_IMMED, &enable);
48#ifdef HID_COMPAT7
49 if (ret < 0)
50 ret = hid_set_immed_compat7(fd, enable);
51#endif
52 return (ret);
53}
54
55int
56hid_get_report_id(int fd)
57{
58 report_desc_t rep;
59 hid_data_t d;
60 hid_item_t h;
61 int kindset;
62 int temp = -1;
63 int ret;
64
65 if ((rep = hid_get_report_desc(fd)) == NULL)
66 goto use_ioctl;
67 kindset = 1 << hid_input | 1 << hid_output | 1 << hid_feature;
68 for (d = hid_start_parse(rep, kindset, 0); hid_get_item(d, &h); ) {
69 /* Return the first report ID we met. */
70 if (h.report_ID != 0) {
71 temp = h.report_ID;
72 break;
73 }
74 }
75 hid_end_parse(d);
76 hid_dispose_report_desc(rep);
77
78 if (temp > 0)
79 return (temp);
80
81use_ioctl:
82 ret = ioctl(fd, USB_GET_REPORT_ID, &temp);
83#ifdef HID_COMPAT7
84 if (ret < 0)
85 ret = hid_get_report_id_compat7(fd);
86 else
87#endif
88 ret = temp;
89
90 return (ret);
91}
92
93report_desc_t
94hid_get_report_desc(int fd)
95{
96 struct usb_gen_descriptor ugd;
97 report_desc_t rep;
98 void *data;
99
100 memset(&ugd, 0, sizeof(ugd));
101
102 /* get actual length first */
103 ugd.ugd_data = hid_pass_ptr(NULL);
104 ugd.ugd_maxlen = 65535;
105 if (ioctl(fd, USB_GET_REPORT_DESC, &ugd) < 0) {
106#ifdef HID_COMPAT7
107 /* could not read descriptor */
108 /* try FreeBSD 7 compat code */
109 return (hid_get_report_desc_compat7(fd));
110#else
111 return (NULL);
112#endif
113 }
114
115 /*
116 * NOTE: The kernel will return a failure if
117 * "ugd_actlen" is zero.
118 */
119 data = malloc(ugd.ugd_actlen);
120 if (data == NULL)
121 return (NULL);
122
123 /* fetch actual descriptor */
124 ugd.ugd_data = hid_pass_ptr(data);
125 ugd.ugd_maxlen = ugd.ugd_actlen;
126 if (ioctl(fd, USB_GET_REPORT_DESC, &ugd) < 0) {
127 /* could not read descriptor */
128 free(data);
129 return (NULL);
130 }
131
132 /* sanity check */
133 if (ugd.ugd_actlen < 1) {
134 /* invalid report descriptor */
135 free(data);
136 return (NULL);
137 }
138
139 /* check END_COLLECTION */
140 if (((unsigned char *)data)[ugd.ugd_actlen -1] != 0xC0) {
141 /* invalid end byte */
142 free(data);
143 return (NULL);
144 }
145
146 rep = hid_use_report_desc(data, ugd.ugd_actlen);
147
148 free(data);
149
150 return (rep);
151}
152
153report_desc_t
154hid_use_report_desc(unsigned char *data, unsigned int size)
155{
156 report_desc_t r;
157
158 r = malloc(sizeof(*r) + size);
159 if (r == 0) {
160 errno = ENOMEM;
161 return (NULL);
162 }
163 r->size = size;
164 memcpy(r->data, data, size);
165 return (r);
166}
167
168void
169hid_dispose_report_desc(report_desc_t r)
170{
171
172 free(r);
173}