1/*
2 * hid.c
3 *
4 * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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 * $Id: hid.c,v 1.3 2004/02/17 22:14:57 max Exp $
29 * $FreeBSD: head/usr.sbin/bluetooth/bthidcontrol/hid.c 128080 2004-04-10 00:18:00Z emax $
30 */
31
32#include <sys/queue.h>
33#include <bluetooth.h>
34#include <dev/usb/usb.h>
35#include <dev/usb/usbhid.h>
36#include <stdio.h>
37#include <string.h>
38#include <usbhid.h>
39#include "bthid_config.h"
40#include "bthidcontrol.h"
41
42static void hid_dump_descriptor (report_desc_t r);
43static void hid_dump_item (char const *label, struct hid_item *h);
44
45static int
46hid_dump(bdaddr_t *bdaddr, int argc, char **argv)
47{
48 struct hid_device *hd = NULL;
49 int e = FAILED;
50
51 if (read_config_file() == 0) {
52 if ((hd = get_hid_device(bdaddr)) != NULL) {
53 hid_dump_descriptor(hd->desc);
54 e = OK;
55 }
56
57 clean_config();
58 }
59
60 return (e);
61}
62
63static int
64hid_forget(bdaddr_t *bdaddr, int argc, char **argv)
65{
66 struct hid_device *hd = NULL;
67 int e = FAILED;
68
69 if (read_config_file() == 0) {
70 if (read_hids_file() == 0) {
71 if ((hd = get_hid_device(bdaddr)) != NULL) {
72 hd->new_device = 1;
73 if (write_hids_file() == 0)
74 e = OK;
75 }
76 }
77
78 clean_config();
79 }
80
81 return (e);
82}
83
84static int
85hid_known(bdaddr_t *bdaddr, int argc, char **argv)
86{
87 struct hid_device *hd = NULL;
88 struct hostent *he = NULL;
89 int e = FAILED;
90
91 if (read_config_file() == 0) {
92 if (read_hids_file() == 0) {
93 e = OK;
94
95 for (hd = get_next_hid_device(hd);
96 hd != NULL;
97 hd = get_next_hid_device(hd)) {
98 if (hd->new_device)
99 continue;
100
101 he = bt_gethostbyaddr((char *) &hd->bdaddr,
102 sizeof(hd->bdaddr),
103 AF_BLUETOOTH);
104
105 fprintf(stdout,
106"%s %s\n", bt_ntoa(&hd->bdaddr, NULL),
107 (he != NULL && he->h_name != NULL)?
108 he->h_name : "");
109 }
110 }
111
112 clean_config();
113 }
114
115 return (e);
116}
117
118static void
119hid_dump_descriptor(report_desc_t r)
120{
121 struct hid_data *d = NULL;
122 struct hid_item h;
123
124 for (d = hid_start_parse(r, ~0, -1); hid_get_item(d, &h); ) {
125 switch (h.kind) {
126 case hid_collection:
127 fprintf(stdout,
128"Collection page=%s usage=%s\n", hid_usage_page(HID_PAGE(h.usage)),
129 hid_usage_in_page(h.usage));
130 break;
131
132 case hid_endcollection:
133 fprintf(stdout, "End collection\n");
134 break;
135
136 case hid_input:
137 hid_dump_item("Input ", &h);
138 break;
139
140 case hid_output:
141 hid_dump_item("Output ", &h);
142 break;
143
144 case hid_feature:
145 hid_dump_item("Feature", &h);
146 break;
147 }
148 }
149
150 hid_end_parse(d);
151}
152
153static void
154hid_dump_item(char const *label, struct hid_item *h)
155{
156 fprintf(stdout,
157"%s id=%u size=%u count=%u page=%s usage=%s%s%s%s%s%s%s%s%s%s",
158 label, (uint8_t) h->report_ID, h->report_size, h->report_count,
159 hid_usage_page(HID_PAGE(h->usage)),
160 hid_usage_in_page(h->usage),
161 h->flags & HIO_CONST ? " Const" : "",
162 h->flags & HIO_VARIABLE ? " Variable" : "",
163 h->flags & HIO_RELATIVE ? " Relative" : "",
164 h->flags & HIO_WRAP ? " Wrap" : "",
165 h->flags & HIO_NONLINEAR ? " NonLinear" : "",
166 h->flags & HIO_NOPREF ? " NoPref" : "",
167 h->flags & HIO_NULLSTATE ? " NullState" : "",
168 h->flags & HIO_VOLATILE ? " Volatile" : "",
169 h->flags & HIO_BUFBYTES ? " BufBytes" : "");
170
171 fprintf(stdout,
172", logical range %d..%d",
173 h->logical_minimum, h->logical_maximum);
174
175 if (h->physical_minimum != h->physical_maximum)
176 fprintf(stdout,
177", physical range %d..%d",
178 h->physical_minimum, h->physical_maximum);
179
180 if (h->unit)
181 fprintf(stdout,
182", unit=0x%02x exp=%d", h->unit, h->unit_exponent);
183
184 fprintf(stdout, "\n");
185}
186
187struct bthid_command hid_commands[] = {
188{
189"Dump",
190"Dump HID descriptor for the specified device in human readable form. The\n" \
191"device must have an entry in the Bluetooth HID daemon configuration file.\n",
192hid_dump
193},
194{
195"Known",
196"List all known to the Bluetooth HID daemon devices.\n",
197hid_known
198},
199{
200"Forget",
201"Forget (mark as new) specified HID device. This command is useful when it\n" \
202"is required to remove device from the known HIDs file. This should be done\n" \
203"when reset button was pressed on the device or the battery was changed. The\n"\
204"Bluetooth HID daemon should be restarted.\n",
205hid_forget
206},
207{ NULL, NULL, NULL }
208};
209