1/*
2 * provider.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: provider.c,v 1.5 2004/01/13 01:54:39 max Exp $
29 * $FreeBSD$
30 */
31
32#include <sys/queue.h>
33#include <bluetooth.h>
34#include <string.h>
35#include <stdlib.h>
36#include "profile.h"
37#include "provider.h"
38
39static TAILQ_HEAD(, provider)	providers = TAILQ_HEAD_INITIALIZER(providers);
40static uint32_t			change_state = 0;
41static uint32_t			handle = 0;
42
43/*
44 * Register Service Discovery provider.
45 * Should not be called more the once.
46 */
47
48int32_t
49provider_register_sd(int32_t fd)
50{
51	extern profile_t	sd_profile_descriptor;
52	extern profile_t	bgd_profile_descriptor;
53
54	provider_p		sd = calloc(1, sizeof(*sd));
55	provider_p		bgd = calloc(1, sizeof(*bgd));
56
57	if (sd == NULL || bgd == NULL) {
58		if (sd != NULL)
59			free(sd);
60
61		if (bgd != NULL)
62			free(bgd);
63
64		return (-1);
65	}
66
67	sd->profile = &sd_profile_descriptor;
68	bgd->handle = 0;
69	sd->fd = fd;
70	TAILQ_INSERT_HEAD(&providers, sd, provider_next);
71
72	bgd->profile = &bgd_profile_descriptor;
73	bgd->handle = 1;
74	sd->fd = fd;
75	TAILQ_INSERT_AFTER(&providers, sd, bgd, provider_next);
76
77	change_state ++;
78
79	return (0);
80}
81
82/*
83 * Register new provider for a given profile, bdaddr and session.
84 */
85
86provider_p
87provider_register(profile_p const profile, bdaddr_p const bdaddr, int32_t fd,
88	uint8_t const *data, uint32_t datalen)
89{
90	provider_p	provider = calloc(1, sizeof(*provider));
91
92	if (provider != NULL) {
93		provider->data = malloc(datalen);
94		if (provider->data != NULL) {
95			provider->profile = profile;
96			memcpy(provider->data, data, datalen);
97
98			/*
99			 * Record handles 0x0 and 0x1 are reserved
100			 * for SDP itself
101			 */
102
103			if (++ handle <= 1)
104				handle = 2;
105
106			provider->handle = handle;
107
108			memcpy(&provider->bdaddr, bdaddr,
109				sizeof(provider->bdaddr));
110			provider->fd = fd;
111
112			TAILQ_INSERT_TAIL(&providers, provider, provider_next);
113			change_state ++;
114		} else {
115			free(provider);
116			provider = NULL;
117		}
118	}
119
120	return (provider);
121}
122
123/*
124 * Unregister provider
125 */
126
127void
128provider_unregister(provider_p provider)
129{
130	TAILQ_REMOVE(&providers, provider, provider_next);
131	if (provider->data != NULL)
132		free(provider->data);
133	free(provider);
134	change_state ++;
135}
136
137/*
138 * Update provider data
139 */
140
141int32_t
142provider_update(provider_p provider, uint8_t const *data, uint32_t datalen)
143{
144	uint8_t	*new_data = (uint8_t *) realloc(provider->data, datalen);
145
146	if (new_data == NULL)
147		return (-1);
148
149	memcpy(new_data, data, datalen);
150	provider->data = new_data;
151
152	return (0);
153}
154
155/*
156 * Get a provider for given record handle
157 */
158
159provider_p
160provider_by_handle(uint32_t handle)
161{
162	provider_p	provider = NULL;
163
164	TAILQ_FOREACH(provider, &providers, provider_next)
165		if (provider->handle == handle)
166			break;
167
168	return (provider);
169}
170
171/*
172 * Cursor access
173 */
174
175provider_p
176provider_get_first(void)
177{
178	return (TAILQ_FIRST(&providers));
179}
180
181provider_p
182provider_get_next(provider_p provider)
183{
184	return (TAILQ_NEXT(provider, provider_next));
185}
186
187/*
188 * Return change state
189 */
190
191uint32_t
192provider_get_change_state(void)
193{
194	return (change_state);
195}
196
197