summaryrefslogtreecommitdiffstats
path: root/plugins/echo.c
blob: ead488e46f5e5086e32d86a76cd971a0310e9357 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
/*
 *
 *  BlueZ - Bluetooth protocol stack for Linux
 *
 *  Copyright (C) 2004-2008  Marcel Holtmann <marcel@holtmann.org>
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <unistd.h>
#include <sys/socket.h>

#include <bluetooth/bluetooth.h>
#include <bluetooth/rfcomm.h>

#include <glib.h>

#include <gdbus.h>

#include "plugin.h"
#include "adapter.h"
#include "logging.h"

static gboolean session_event(GIOChannel *chan,
					GIOCondition cond, gpointer data)
{
	unsigned char buf[672];
	gsize len, written;
	GIOError err;

	if (cond & (G_IO_HUP | G_IO_ERR | G_IO_NVAL))
		return FALSE;

	err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len);
	if (err == G_IO_ERROR_AGAIN)
		return TRUE;

	g_io_channel_write(chan, (const gchar *) buf, len, &written);

	return TRUE;
}

static gboolean connect_event(GIOChannel *chan,
					GIOCondition cond, gpointer data)
{
	GIOChannel *io;
	struct sockaddr_rc addr;
	socklen_t optlen;
	char address[18];
	int sk, nsk;

	sk = g_io_channel_unix_get_fd(chan);

	memset(&addr, 0, sizeof(addr));
	optlen = sizeof(addr);

	nsk = accept(sk, (struct sockaddr *) &addr, &optlen);
	if (nsk < 0)
		return TRUE;

	io = g_io_channel_unix_new(nsk);
	g_io_channel_set_close_on_unref(io, TRUE);

	ba2str(&addr.rc_bdaddr, address);

	g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
							session_event, NULL);

	return TRUE;
}

static GIOChannel *setup_rfcomm(uint8_t channel)
{
	GIOChannel *io;
	struct sockaddr_rc addr;
	int sk;

	sk = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
	if (sk < 0)
		return NULL;

	memset(&addr, 0, sizeof(addr));
	addr.rc_family = AF_BLUETOOTH;
	bacpy(&addr.rc_bdaddr, BDADDR_ANY);
	addr.rc_channel = channel;

	if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
		close(sk);
		return NULL;
	}

	if (listen(sk, 10) < 0) {
		close(sk);
		return NULL;
	}

	io = g_io_channel_unix_new(sk);
	g_io_channel_set_close_on_unref(io, TRUE);

	g_io_add_watch(io, G_IO_IN, connect_event, NULL);

	return io;
}

static GIOChannel *chan = NULL;

static int echo_probe(struct adapter *adapter)
{
	const char *path = adapter_get_path(adapter);

	DBG("path %s", path);

	chan = setup_rfcomm(23);

	return 0;
}

static void echo_remove(struct adapter *adapter)
{
	const char *path = adapter_get_path(adapter);

	DBG("path %s", path);

	g_io_channel_unref(chan);
}

static struct btd_adapter_driver echo_server = {
	.name	= "echo-server",
	.probe	= echo_probe,
	.remove	= echo_remove,
};

static int echo_init(void)
{
	debug("Setup echo plugin");

	return btd_register_adapter_driver(&echo_server);
}

static void echo_exit(void)
{
	debug("Cleanup echo plugin");

	btd_unregister_adapter_driver(&echo_server);
}

BLUETOOTH_PLUGIN_DEFINE("echo", echo_init, echo_exit)