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
44 extern uint32_t verbose;
45
46 static void hid_dump_descriptor (report_desc_t r);
47 static void hid_dump_item (char const *label, struct hid_item *h);
48
49 static int
hid_dump(bdaddr_t * bdaddr,int argc,char ** argv)50 hid_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
67 static int
hid_forget(bdaddr_t * bdaddr,int argc,char ** argv)68 hid_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
88 static int
hid_known(bdaddr_t * bdaddr,int argc,char ** argv)89 hid_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
122 static void
hid_dump_descriptor(report_desc_t r)123 hid_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
157 static void
hid_dump_item(char const * label,struct hid_item * h)158 hid_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
194 struct 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",
199 hid_dump
200 },
201 {
202 "Known",
203 "List all known to the Bluetooth HID daemon devices.\n",
204 hid_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",
212 hid_forget
213 },
214 { NULL, NULL, NULL }
215 };
216
217