audio_sink.c revision 343902 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2019 Hans Petter Selasky <hselasky@freebsd.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 * $FreeBSD: stable/10/usr.sbin/bluetooth/sdpd/audio_sink.c 343902 2019-02-08 10:28:13Z hselasky $
29 */
30
31#include <sys/queue.h>
32#define	L2CAP_SOCKET_CHECKED
33#include <bluetooth.h>
34#include <sdp.h>
35#include <string.h>
36#include "profile.h"
37#include "provider.h"
38
39static int32_t
40audio_sink_profile_create_service_class_id_list(
41    uint8_t *buf, uint8_t const *const eob,
42    uint8_t const *data, uint32_t datalen)
43{
44	static const uint16_t service_classes[] = {
45		SDP_SERVICE_CLASS_AUDIO_SINK,
46	};
47
48	return (common_profile_create_service_class_id_list(
49	    buf, eob,
50	    (uint8_t const *)service_classes,
51	    sizeof(service_classes)));
52}
53
54static int32_t
55audio_sink_profile_create_protocol_descriptor_list(
56    uint8_t *buf, uint8_t const *const eob,
57    uint8_t const *data, uint32_t datalen)
58{
59	provider_p provider = (provider_p) data;
60	sdp_audio_sink_profile_p audio_sink = (sdp_audio_sink_profile_p) provider->data;
61
62	if (buf + 18 > eob)
63		return (-1);
64
65	SDP_PUT8(SDP_DATA_SEQ8, buf);
66	SDP_PUT8(16, buf);
67
68	SDP_PUT8(SDP_DATA_SEQ8, buf);
69	SDP_PUT8(6, buf);
70
71	SDP_PUT8(SDP_DATA_UUID16, buf);
72	SDP_PUT16(SDP_UUID_PROTOCOL_L2CAP, buf);
73
74	SDP_PUT8(SDP_DATA_UINT16, buf);
75	SDP_PUT16(audio_sink->psm, buf);
76
77	SDP_PUT8(SDP_DATA_SEQ8, buf);
78	SDP_PUT8(6, buf);
79
80	SDP_PUT8(SDP_DATA_UUID16, buf);
81	SDP_PUT16(SDP_UUID_PROTOCOL_AVDTP, buf);
82
83	SDP_PUT8(SDP_DATA_UINT16, buf);
84	SDP_PUT16(audio_sink->protover, buf);
85
86	return (18);
87}
88
89static int32_t
90audio_sink_profile_create_browse_group_list(
91    uint8_t *buf, uint8_t const *const eob,
92    uint8_t const *data, uint32_t datalen)
93{
94
95	if (buf + 5 > eob)
96		return (-1);
97
98	SDP_PUT8(SDP_DATA_SEQ8, buf);
99	SDP_PUT8(3, buf);
100
101	SDP_PUT8(SDP_DATA_UUID16, buf);
102	SDP_PUT16(SDP_SERVICE_CLASS_PUBLIC_BROWSE_GROUP, buf);
103
104	return (5);
105}
106
107static int32_t
108audio_sink_profile_create_bluetooth_profile_descriptor_list(
109    uint8_t *buf, uint8_t const *const eob,
110    uint8_t const *data, uint32_t datalen)
111{
112	static const uint16_t profile_descriptor_list[] = {
113		SDP_SERVICE_CLASS_ADVANCED_AUDIO_DISTRIBUTION,
114		0x0100
115	};
116
117	return (common_profile_create_bluetooth_profile_descriptor_list(
118	    buf, eob,
119	    (uint8_t const *)profile_descriptor_list,
120	    sizeof(profile_descriptor_list)));
121}
122
123static int32_t
124audio_sink_profile_create_service_name(
125    uint8_t *buf, uint8_t const *const eob,
126    uint8_t const *data, uint32_t datalen)
127{
128	static const char service_name[] = "Audio SNK";
129
130	return (common_profile_create_string8(
131	    buf, eob,
132	    (uint8_t const *)service_name, strlen(service_name)));
133}
134
135static int32_t
136audio_sink_create_supported_features(
137    uint8_t *buf, uint8_t const *const eob,
138    uint8_t const *data, uint32_t datalen)
139{
140	provider_p provider = (provider_p) data;
141	sdp_audio_sink_profile_p audio_sink = (sdp_audio_sink_profile_p) provider->data;
142
143	if (buf + 3 > eob)
144		return (-1);
145
146	SDP_PUT8(SDP_DATA_UINT16, buf);
147	SDP_PUT16(audio_sink->features, buf);
148
149	return (3);
150}
151
152static int32_t
153audio_sink_profile_valid(uint8_t const *data, uint32_t datalen)
154{
155
156	if (datalen < sizeof(struct sdp_audio_sink_profile))
157		return (0);
158	return (1);
159}
160
161static const attr_t audio_sink_profile_attrs[] = {
162	{SDP_ATTR_SERVICE_RECORD_HANDLE,
163	common_profile_create_service_record_handle},
164	{SDP_ATTR_SERVICE_CLASS_ID_LIST,
165	audio_sink_profile_create_service_class_id_list},
166	{SDP_ATTR_PROTOCOL_DESCRIPTOR_LIST,
167	audio_sink_profile_create_protocol_descriptor_list},
168	{SDP_ATTR_BROWSE_GROUP_LIST,
169	audio_sink_profile_create_browse_group_list},
170	{SDP_ATTR_LANGUAGE_BASE_ATTRIBUTE_ID_LIST,
171	common_profile_create_language_base_attribute_id_list},
172	{SDP_ATTR_BLUETOOTH_PROFILE_DESCRIPTOR_LIST,
173	audio_sink_profile_create_bluetooth_profile_descriptor_list},
174	{SDP_ATTR_PRIMARY_LANGUAGE_BASE_ID + SDP_ATTR_SERVICE_NAME_OFFSET,
175	audio_sink_profile_create_service_name},
176	{SDP_ATTR_PRIMARY_LANGUAGE_BASE_ID + SDP_ATTR_PROVIDER_NAME_OFFSET,
177	common_profile_create_service_provider_name},
178	{SDP_ATTR_SUPPORTED_FEATURES,
179	audio_sink_create_supported_features},
180	{}				/* end entry */
181};
182
183profile_t audio_sink_profile_descriptor = {
184	SDP_SERVICE_CLASS_AUDIO_SINK,
185	sizeof(sdp_audio_sink_profile_t),
186	audio_sink_profile_valid,
187	(attr_t const *const)&audio_sink_profile_attrs
188};
189