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