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