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
session_event(GIOChannel * chan,GIOCondition cond,gpointer data)43 static 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
connect_event(GIOChannel * chan,GIOCondition cond,gpointer data)62 static 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
setup_rfcomm(uint8_t channel)91 static 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
124 static GIOChannel *chan = NULL;
125
echo_probe(struct btd_adapter * adapter)126 static 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
echo_remove(struct btd_adapter * adapter)137 static 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
146 static struct btd_adapter_driver echo_server = {
147 .name = "echo-server",
148 .probe = echo_probe,
149 .remove = echo_remove,
150 };
151
echo_init(void)152 static int echo_init(void)
153 {
154 DBG("Setup echo plugin");
155
156 return btd_register_adapter_driver(&echo_server);
157 }
158
echo_exit(void)159 static void echo_exit(void)
160 {
161 DBG("Cleanup echo plugin");
162
163 btd_unregister_adapter_driver(&echo_server);
164 }
165
166 BLUETOOTH_PLUGIN_DEFINE(echo, VERSION,
167 BLUETOOTH_PLUGIN_PRIORITY_DEFAULT, echo_init, echo_exit)
168