1/*-
2 * lan.c
3 *
4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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: lan.c,v 1.5 2004/01/13 01:54:39 max Exp $
31 * $FreeBSD: stable/11/usr.sbin/bluetooth/sdpd/lan.c 330449 2018-03-05 07:26:05Z eadler $
32 */
33
34#include <arpa/inet.h>
35#include <sys/queue.h>
36#define L2CAP_SOCKET_CHECKED
37#include <bluetooth.h>
38#include <sdp.h>
39#include <stdio.h>
40#include <string.h>
41#include "profile.h"
42#include "provider.h"
43
44static int32_t
45lan_profile_create_service_class_id_list(
46		uint8_t *buf, uint8_t const * const eob,
47		uint8_t const *data, uint32_t datalen)
48{
49	static uint16_t	service_classes[] = {
50		SDP_SERVICE_CLASS_LAN_ACCESS_USING_PPP
51	};
52
53	return (common_profile_create_service_class_id_list(
54			buf, eob,
55			(uint8_t const *) service_classes,
56			sizeof(service_classes)));
57}
58
59static int32_t
60lan_profile_create_bluetooth_profile_descriptor_list(
61		uint8_t *buf, uint8_t const * const eob,
62		uint8_t const *data, uint32_t datalen)
63{
64	static uint16_t	profile_descriptor_list[] = {
65		SDP_SERVICE_CLASS_LAN_ACCESS_USING_PPP,
66		0x0100
67	};
68
69	return (common_profile_create_bluetooth_profile_descriptor_list(
70			buf, eob,
71			(uint8_t const *) profile_descriptor_list,
72			sizeof(profile_descriptor_list)));
73}
74
75static int32_t
76lan_profile_create_service_name(
77		uint8_t *buf, uint8_t const * const eob,
78		uint8_t const *data, uint32_t datalen)
79{
80	static char	service_name[] = "LAN Access using PPP";
81
82	return (common_profile_create_string8(
83			buf, eob,
84			(uint8_t const *) service_name, strlen(service_name)));
85}
86
87static int32_t
88lan_profile_create_protocol_descriptor_list(
89		uint8_t *buf, uint8_t const * const eob,
90		uint8_t const *data, uint32_t datalen)
91{
92	provider_p		provider = (provider_p) data;
93	sdp_lan_profile_p	lan = (sdp_lan_profile_p) provider->data;
94
95	return (rfcomm_profile_create_protocol_descriptor_list(
96			buf, eob,
97			(uint8_t const *) &lan->server_channel, 1));
98}
99
100static int32_t
101lan_profile_create_service_availability(
102		uint8_t *buf, uint8_t const * const eob,
103		uint8_t const *data, uint32_t datalen)
104{
105	provider_p		provider = (provider_p) data;
106	sdp_lan_profile_p	lan = (sdp_lan_profile_p) provider->data;
107
108	return (common_profile_create_service_availability(buf, eob,
109			&lan->load_factor, 1));
110}
111
112static int32_t
113lan_profile_create_ip_subnet(
114		uint8_t *buf, uint8_t const * const eob,
115		uint8_t const *data, uint32_t datalen)
116{
117	provider_p		provider = (provider_p) data;
118	sdp_lan_profile_p	lan = (sdp_lan_profile_p) provider->data;
119	char			net[32];
120	int32_t			len;
121
122	len = snprintf(net, sizeof(net), "%s/%d",
123			inet_ntoa(* (struct in_addr *) &lan->ip_subnet),
124			lan->ip_subnet_radius);
125
126	if (len < 0 || buf + 2 + len > eob)
127		return (-1);
128
129	SDP_PUT8(SDP_DATA_STR8, buf);
130	SDP_PUT8(len, buf);
131	memcpy(buf, net, len);
132
133	return (2 + len);
134}
135
136static int32_t
137lan_profile_data_valid(uint8_t const *data, uint32_t datalen)
138{
139	sdp_lan_profile_p	lan = (sdp_lan_profile_p) data;
140
141	if (lan->server_channel < 1 ||
142	    lan->server_channel > 30 ||
143	    lan->ip_subnet_radius > 32)
144		return (0);
145
146	return (1);
147}
148
149static attr_t	lan_profile_attrs[] = {
150	{ SDP_ATTR_SERVICE_RECORD_HANDLE,
151	  common_profile_create_service_record_handle },
152	{ SDP_ATTR_SERVICE_CLASS_ID_LIST,
153	  lan_profile_create_service_class_id_list },
154	{ SDP_ATTR_BLUETOOTH_PROFILE_DESCRIPTOR_LIST,
155	  lan_profile_create_bluetooth_profile_descriptor_list },
156	{ SDP_ATTR_LANGUAGE_BASE_ATTRIBUTE_ID_LIST,
157	  common_profile_create_language_base_attribute_id_list },
158	{ SDP_ATTR_PRIMARY_LANGUAGE_BASE_ID + SDP_ATTR_SERVICE_NAME_OFFSET,
159	  lan_profile_create_service_name },
160	{ SDP_ATTR_PROTOCOL_DESCRIPTOR_LIST,
161	  lan_profile_create_protocol_descriptor_list },
162	{ SDP_ATTR_SERVICE_AVAILABILITY,
163	  lan_profile_create_service_availability },
164	{ SDP_ATTR_IP_SUBNET,
165	  lan_profile_create_ip_subnet },
166	{ 0, NULL } /* end entry */
167};
168
169profile_t	lan_profile_descriptor = {
170	SDP_SERVICE_CLASS_LAN_ACCESS_USING_PPP,
171	sizeof(sdp_lan_profile_t),
172	lan_profile_data_valid,
173	(attr_t const * const) &lan_profile_attrs
174};
175
176