1/*
2 *
3 *  BlueZ - Bluetooth protocol stack for Linux
4 *
5 *  Copyright (C) 2004-2010  Marcel Holtmann <marcel@holtmann.org>
6 *
7 *
8 *  This program is free software; you can redistribute it and/or modify
9 *  it under the terms of the GNU General Public License as published by
10 *  the Free Software Foundation; either version 2 of the License, or
11 *  (at your option) any later version.
12 *
13 *  This program is distributed in the hope that it will be useful,
14 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *  GNU General Public License for more details.
17 *
18 *  You should have received a copy of the GNU General Public License
19 *  along with this program; if not, write to the Free Software
20 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
21 *
22 */
23
24#ifdef HAVE_CONFIG_H
25#include <config.h>
26#endif
27
28#include <errno.h>
29#include <unistd.h>
30#include <sys/socket.h>
31
32#include <bluetooth/bluetooth.h>
33#include <bluetooth/rfcomm.h>
34
35#include <glib.h>
36
37#include <gdbus.h>
38
39#include "plugin.h"
40#include "adapter.h"
41#include "log.h"
42
43static gboolean session_event(GIOChannel *chan,
44					GIOCondition cond, gpointer data)
45{
46	unsigned char buf[672];
47	gsize len, written;
48	GIOError err;
49
50	if (cond & (G_IO_HUP | G_IO_ERR | G_IO_NVAL))
51		return FALSE;
52
53	err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf), &len);
54	if (err == G_IO_ERROR_AGAIN)
55		return TRUE;
56
57	g_io_channel_write(chan, (const gchar *) buf, len, &written);
58
59	return TRUE;
60}
61
62static gboolean connect_event(GIOChannel *chan,
63					GIOCondition cond, gpointer data)
64{
65	GIOChannel *io;
66	struct sockaddr_rc addr;
67	socklen_t optlen;
68	char address[18];
69	int sk, nsk;
70
71	sk = g_io_channel_unix_get_fd(chan);
72
73	memset(&addr, 0, sizeof(addr));
74	optlen = sizeof(addr);
75
76	nsk = accept(sk, (struct sockaddr *) &addr, &optlen);
77	if (nsk < 0)
78		return TRUE;
79
80	io = g_io_channel_unix_new(nsk);
81	g_io_channel_set_close_on_unref(io, TRUE);
82
83	ba2str(&addr.rc_bdaddr, address);
84
85	g_io_add_watch(io, G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
86							session_event, NULL);
87
88	return TRUE;
89}
90
91static GIOChannel *setup_rfcomm(uint8_t channel)
92{
93	GIOChannel *io;
94	struct sockaddr_rc addr;
95	int sk;
96
97	sk = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
98	if (sk < 0)
99		return NULL;
100
101	memset(&addr, 0, sizeof(addr));
102	addr.rc_family = AF_BLUETOOTH;
103	bacpy(&addr.rc_bdaddr, BDADDR_ANY);
104	addr.rc_channel = channel;
105
106	if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
107		close(sk);
108		return NULL;
109	}
110
111	if (listen(sk, 10) < 0) {
112		close(sk);
113		return NULL;
114	}
115
116	io = g_io_channel_unix_new(sk);
117	g_io_channel_set_close_on_unref(io, TRUE);
118
119	g_io_add_watch(io, G_IO_IN, connect_event, NULL);
120
121	return io;
122}
123
124static GIOChannel *chan = NULL;
125
126static int echo_probe(struct btd_adapter *adapter)
127{
128	const char *path = adapter_get_path(adapter);
129
130	DBG("path %s", path);
131
132	chan = setup_rfcomm(23);
133
134	return 0;
135}
136
137static void echo_remove(struct btd_adapter *adapter)
138{
139	const char *path = adapter_get_path(adapter);
140
141	DBG("path %s", path);
142
143	g_io_channel_unref(chan);
144}
145
146static struct btd_adapter_driver echo_server = {
147	.name	= "echo-server",
148	.probe	= echo_probe,
149	.remove	= echo_remove,
150};
151
152static int echo_init(void)
153{
154	DBG("Setup echo plugin");
155
156	return btd_register_adapter_driver(&echo_server);
157}
158
159static void echo_exit(void)
160{
161	DBG("Cleanup echo plugin");
162
163	btd_unregister_adapter_driver(&echo_server);
164}
165
166BLUETOOTH_PLUGIN_DEFINE(echo, VERSION,
167		BLUETOOTH_PLUGIN_PRIORITY_DEFAULT, echo_init, echo_exit)
168