xref: /freebsd/usr.sbin/bluetooth/bthidcontrol/hid.c (revision 66fd12cf4896eb08ad8e7a2627537f84ead84dd3)
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  * $FreeBSD$
32  */
33 
34 #include <sys/queue.h>
35 #define L2CAP_SOCKET_CHECKED
36 #include <bluetooth.h>
37 #include <dev/usb/usb.h>
38 #include <dev/usb/usbhid.h>
39 #include <stdio.h>
40 #include <string.h>
41 #include <usbhid.h>
42 #include "bthid_config.h"
43 #include "bthidcontrol.h"
44 
45 extern uint32_t verbose;
46 
47 static void hid_dump_descriptor	(report_desc_t r);
48 static void hid_dump_item	(char const *label, struct hid_item *h);
49 
50 static int
51 hid_dump(bdaddr_t *bdaddr, int argc, char **argv)
52 {
53 	struct hid_device	*hd = NULL;
54 	int			 e = FAILED;
55 
56 	if (read_config_file() == 0) {
57 		if ((hd = get_hid_device(bdaddr)) != NULL) {
58 			hid_dump_descriptor(hd->desc);
59 			e = OK;
60 		}
61 
62 		clean_config();
63 	}
64 
65 	return (e);
66 }
67 
68 static int
69 hid_forget(bdaddr_t *bdaddr, int argc, char **argv)
70 {
71 	struct hid_device	*hd = NULL;
72 	int			 e = FAILED;
73 
74 	if (read_config_file() == 0) {
75 		if (read_hids_file() == 0) {
76 			if ((hd = get_hid_device(bdaddr)) != NULL) {
77 				hd->new_device = 1;
78 				if (write_hids_file() == 0)
79 					e = OK;
80 			}
81 		}
82 
83 		clean_config();
84 	}
85 
86 	return (e);
87 }
88 
89 static int
90 hid_known(bdaddr_t *bdaddr, int argc, char **argv)
91 {
92 	struct hid_device	*hd = NULL;
93 	struct hostent		*he = NULL;
94 	int			 e = FAILED;
95 
96 	if (read_config_file() == 0) {
97 		if (read_hids_file() == 0) {
98 			e = OK;
99 
100 			for (hd = get_next_hid_device(hd);
101 			     hd != NULL;
102 			     hd = get_next_hid_device(hd)) {
103 				if (hd->new_device)
104 					continue;
105 
106 				he = bt_gethostbyaddr((char *) &hd->bdaddr,
107 						sizeof(hd->bdaddr),
108 						AF_BLUETOOTH);
109 
110 				fprintf(stdout,
111 "%s %s\n",				bt_ntoa(&hd->bdaddr, NULL),
112 					(he != NULL && he->h_name != NULL)?
113 						he->h_name : "");
114 			}
115 		}
116 
117 		clean_config();
118 	}
119 
120 	return (e);
121 }
122 
123 static void
124 hid_dump_descriptor(report_desc_t r)
125 {
126 	struct hid_data	*d = NULL;
127 	struct hid_item	 h;
128 
129 	for (d = hid_start_parse(r, ~0, -1); hid_get_item(d, &h); ) {
130 		switch (h.kind) {
131 		case hid_collection:
132 			fprintf(stdout,
133 "Collection page=%s usage=%s\n", hid_usage_page(HID_PAGE(h.usage)),
134 				 hid_usage_in_page(h.usage));
135 			break;
136 
137 		case hid_endcollection:
138 			fprintf(stdout, "End collection\n");
139 			break;
140 
141 		case hid_input:
142 			hid_dump_item("Input  ", &h);
143 			break;
144 
145 		case hid_output:
146 			hid_dump_item("Output ", &h);
147 			break;
148 
149 		case hid_feature:
150 			hid_dump_item("Feature", &h);
151 			break;
152 		}
153 	}
154 
155 	hid_end_parse(d);
156 }
157 
158 static void
159 hid_dump_item(char const *label, struct hid_item *h)
160 {
161 	if ((h->flags & HIO_CONST) && !verbose)
162 		return;
163 
164 	fprintf(stdout,
165 "%s id=%u size=%u count=%u page=%s usage=%s%s%s%s%s%s%s%s%s%s",
166 		label, (uint8_t) h->report_ID, h->report_size, h->report_count,
167 		hid_usage_page(HID_PAGE(h->usage)),
168 		hid_usage_in_page(h->usage),
169 		h->flags & HIO_CONST ? " Const" : "",
170 		h->flags & HIO_VARIABLE ? " Variable" : "",
171 		h->flags & HIO_RELATIVE ? " Relative" : "",
172 		h->flags & HIO_WRAP ? " Wrap" : "",
173 		h->flags & HIO_NONLINEAR ? " NonLinear" : "",
174 		h->flags & HIO_NOPREF ? " NoPref" : "",
175 		h->flags & HIO_NULLSTATE ? " NullState" : "",
176 		h->flags & HIO_VOLATILE ? " Volatile" : "",
177 		h->flags & HIO_BUFBYTES ? " BufBytes" : "");
178 
179 	fprintf(stdout,
180 ", logical range %d..%d",
181 		h->logical_minimum, h->logical_maximum);
182 
183 	if (h->physical_minimum != h->physical_maximum)
184 		fprintf(stdout,
185 ", physical range %d..%d",
186 			h->physical_minimum, h->physical_maximum);
187 
188 	if (h->unit)
189 		fprintf(stdout,
190 ", unit=0x%02x exp=%d", h->unit, h->unit_exponent);
191 
192 	fprintf(stdout, "\n");
193 }
194 
195 struct bthid_command	hid_commands[] = {
196 {
197 "Dump",
198 "Dump HID descriptor for the specified device in human readable form. The\n" \
199 "device must have an entry in the Bluetooth HID daemon configuration file.\n",
200 hid_dump
201 },
202 {
203 "Known",
204 "List all known to the Bluetooth HID daemon devices.\n",
205 hid_known
206 },
207 {
208 "Forget",
209 "Forget (mark as new) specified HID device. This command is useful when it\n" \
210 "is required to remove device from the known HIDs file. This should be done\n" \
211 "when reset button was pressed on the device or the battery was changed. The\n"\
212 "Bluetooth HID daemon should be restarted.\n",
213 hid_forget
214 },
215 { NULL, NULL, NULL }
216 };
217 
218