1/*-
2 * hid.c
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $Id: hid.c,v 1.3 2004/02/17 22:14:57 max Exp $
31 */
32
33#include <sys/queue.h>
34#define L2CAP_SOCKET_CHECKED
35#include <bluetooth.h>
36#include <dev/usb/usb.h>
37#include <dev/usb/usbhid.h>
38#include <stdio.h>
39#include <string.h>
40#include <usbhid.h>
41#include "bthid_config.h"
42#include "bthidcontrol.h"
43
44extern uint32_t verbose;
45
46static void hid_dump_descriptor	(report_desc_t r);
47static void hid_dump_item	(char const *label, struct hid_item *h);
48
49static int
50hid_dump(bdaddr_t *bdaddr, int argc, char **argv)
51{
52	struct hid_device	*hd = NULL;
53	int			 e = FAILED;
54
55	if (read_config_file() == 0) {
56		if ((hd = get_hid_device(bdaddr)) != NULL) {
57			hid_dump_descriptor(hd->desc);
58			e = OK;
59		}
60
61		clean_config();
62	}
63
64	return (e);
65}
66
67static int
68hid_forget(bdaddr_t *bdaddr, int argc, char **argv)
69{
70	struct hid_device	*hd = NULL;
71	int			 e = FAILED;
72
73	if (read_config_file() == 0) {
74		if (read_hids_file() == 0) {
75			if ((hd = get_hid_device(bdaddr)) != NULL) {
76				hd->new_device = 1;
77				if (write_hids_file() == 0)
78					e = OK;
79			}
80		}
81
82		clean_config();
83	}
84
85	return (e);
86}
87
88static int
89hid_known(bdaddr_t *bdaddr, int argc, char **argv)
90{
91	struct hid_device	*hd = NULL;
92	struct hostent		*he = NULL;
93	int			 e = FAILED;
94
95	if (read_config_file() == 0) {
96		if (read_hids_file() == 0) {
97			e = OK;
98
99			for (hd = get_next_hid_device(hd);
100			     hd != NULL;
101			     hd = get_next_hid_device(hd)) {
102				if (hd->new_device)
103					continue;
104
105				he = bt_gethostbyaddr((char *) &hd->bdaddr,
106						sizeof(hd->bdaddr),
107						AF_BLUETOOTH);
108
109				fprintf(stdout,
110"%s %s\n",				bt_ntoa(&hd->bdaddr, NULL),
111					(he != NULL && he->h_name != NULL)?
112						he->h_name : "");
113			}
114		}
115
116		clean_config();
117	}
118
119	return (e);
120}
121
122static void
123hid_dump_descriptor(report_desc_t r)
124{
125	struct hid_data	*d = NULL;
126	struct hid_item	 h;
127
128	for (d = hid_start_parse(r, ~0, -1); hid_get_item(d, &h); ) {
129		switch (h.kind) {
130		case hid_collection:
131			fprintf(stdout,
132"Collection page=%s usage=%s\n", hid_usage_page(HID_PAGE(h.usage)),
133				 hid_usage_in_page(h.usage));
134			break;
135
136		case hid_endcollection:
137			fprintf(stdout, "End collection\n");
138			break;
139
140		case hid_input:
141			hid_dump_item("Input  ", &h);
142			break;
143
144		case hid_output:
145			hid_dump_item("Output ", &h);
146			break;
147
148		case hid_feature:
149			hid_dump_item("Feature", &h);
150			break;
151		}
152	}
153
154	hid_end_parse(d);
155}
156
157static void
158hid_dump_item(char const *label, struct hid_item *h)
159{
160	if ((h->flags & HIO_CONST) && !verbose)
161		return;
162
163	fprintf(stdout,
164"%s id=%u size=%u count=%u page=%s usage=%s%s%s%s%s%s%s%s%s%s",
165		label, (uint8_t) h->report_ID, h->report_size, h->report_count,
166		hid_usage_page(HID_PAGE(h->usage)),
167		hid_usage_in_page(h->usage),
168		h->flags & HIO_CONST ? " Const" : "",
169		h->flags & HIO_VARIABLE ? " Variable" : "",
170		h->flags & HIO_RELATIVE ? " Relative" : "",
171		h->flags & HIO_WRAP ? " Wrap" : "",
172		h->flags & HIO_NONLINEAR ? " NonLinear" : "",
173		h->flags & HIO_NOPREF ? " NoPref" : "",
174		h->flags & HIO_NULLSTATE ? " NullState" : "",
175		h->flags & HIO_VOLATILE ? " Volatile" : "",
176		h->flags & HIO_BUFBYTES ? " BufBytes" : "");
177
178	fprintf(stdout,
179", logical range %d..%d",
180		h->logical_minimum, h->logical_maximum);
181
182	if (h->physical_minimum != h->physical_maximum)
183		fprintf(stdout,
184", physical range %d..%d",
185			h->physical_minimum, h->physical_maximum);
186
187	if (h->unit)
188		fprintf(stdout,
189", unit=0x%02x exp=%d", h->unit, h->unit_exponent);
190
191	fprintf(stdout, "\n");
192}
193
194struct bthid_command	hid_commands[] = {
195{
196"Dump",
197"Dump HID descriptor for the specified device in human readable form. The\n" \
198"device must have an entry in the Bluetooth HID daemon configuration file.\n",
199hid_dump
200},
201{
202"Known",
203"List all known to the Bluetooth HID daemon devices.\n",
204hid_known
205},
206{
207"Forget",
208"Forget (mark as new) specified HID device. This command is useful when it\n" \
209"is required to remove device from the known HIDs file. This should be done\n" \
210"when reset button was pressed on the device or the battery was changed. The\n"\
211"Bluetooth HID daemon should be restarted.\n",
212hid_forget
213},
214{ NULL, NULL, NULL }
215};
216
217