1 /* $NetBSD: server.c,v 1.2 2009/01/24 17:29:28 plunky Exp $ */
4 * Copyright (c) 2008 Iain Hibbert
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 #include <sys/cdefs.h>
31 __RCSID("$NetBSD: server.c,v 1.2 2009/01/24 17:29:28 plunky Exp $");
33 #include <sys/ioctl.h>
35 #include <bluetooth.h>
44 static struct event server_ev;
46 static int server_avail;
48 static void * server_ss;
49 static uint32_t server_handle;
51 static void server_open(void);
52 static void server_close(void);
53 static void server_read(int, short, void *);
54 static void server_register(void);
64 * The server_update() function is called whenever the channel count is
65 * changed. We maintain the SDP record and open or close the server socket
69 server_update(int count)
72 if (server_limit == 0)
75 log_debug("count %d", count);
77 server_avail = UINT8_MAX - (count - 1) * UINT8_MAX / server_limit;
78 log_info("Service Availability: %d/%d", server_avail, UINT8_MAX);
80 if (server_avail == 0 && server_fd != -1)
83 if (server_avail > 0 && server_fd == -1)
93 struct sockaddr_l2cap sa;
96 server_fd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
97 if (server_fd == -1) {
98 log_err("Could not open L2CAP socket: %m");
102 memset(&sa, 0, sizeof(sa));
103 sa.l2cap_family = AF_BLUETOOTH;
104 sa.l2cap_len = sizeof(sa);
105 sa.l2cap_psm = htole16(l2cap_psm);
106 bdaddr_copy(&sa.l2cap_bdaddr, &local_bdaddr);
107 if (bind(server_fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
108 log_err("Could not bind server socket: %m");
113 if (setsockopt(server_fd, SOL_L2CAP,
114 SO_L2CAP_IMTU, &mru, sizeof(mru)) == -1) {
115 log_err("Could not set L2CAP IMTU (%d): %m", mru);
119 if (listen(server_fd, 0) == -1) {
120 log_err("Could not listen on server socket: %m");
124 event_set(&server_ev, server_fd, EV_READ | EV_PERSIST, server_read, NULL);
125 if (event_add(&server_ev, NULL) == -1) {
126 log_err("Could not add server event: %m");
130 log_info("server socket open");
137 event_del(&server_ev);
141 log_info("server socket closed");
145 * handle connection request
148 server_read(int s, short ev, void *arg)
150 struct sockaddr_l2cap ra, la;
157 fd = accept(s, (struct sockaddr *)&ra, &len);
162 if (ioctl(fd, FIONBIO, &n) == -1) {
163 log_err("Could not set NonBlocking IO: %m");
169 if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_IMTU, &mru, &len) == -1) {
170 log_err("Could not get L2CAP IMTU: %m");
174 if(mru < BNEP_MTU_MIN) {
175 log_err("L2CAP IMTU too small (%d)", mru);
181 if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_OMTU, &mtu, &len) == -1) {
182 log_err("Could not get L2CAP OMTU: %m");
186 if (mtu < BNEP_MTU_MIN) {
187 log_err("L2CAP OMTU too small (%d)", mtu);
193 if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, &len) == -1) {
194 log_err("Could not get socket send buffer size: %m");
201 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n)) == -1) {
202 log_err("Could not set socket send buffer size (%d): %m", n);
209 if (setsockopt(fd, SOL_SOCKET, SO_SNDLOWAT, &n, sizeof(n)) == -1) {
210 log_err("Could not set socket low water mark (%d): %m", n);
216 if (getsockname(fd, (struct sockaddr *)&la, &len) == -1) {
217 log_err("Could not get socket address: %m");
222 log_info("Accepted connection from %s", bt_ntoa(&ra.l2cap_bdaddr, NULL));
224 chan = channel_alloc();
230 chan->send = bnep_send;
231 chan->recv = bnep_recv;
234 b2eaddr(chan->raddr, &ra.l2cap_bdaddr);
235 b2eaddr(chan->laddr, &la.l2cap_bdaddr);
236 chan->state = CHANNEL_WAIT_CONNECT_REQ;
237 channel_timeout(chan, 10);
238 if (!channel_open(chan, fd)) {
239 chan->state = CHANNEL_CLOSED;
247 server_register(void)
252 if (server_ss == NULL) {
253 server_ss = sdp_open_local(control_path);
254 if (server_ss == NULL || sdp_error(server_ss) != 0) {
255 log_err("failed to contact SDP server");
260 memset(&p, 0, sizeof(p));
262 p.load_factor = server_avail;
263 p.security_description = (l2cap_mode == 0 ? 0x0000 : 0x0001);
266 rv = sdp_change_service(server_ss, server_handle,
267 (uint8_t *)&p, sizeof(p));
269 rv = sdp_register_service(server_ss, service_class,
270 &local_bdaddr, (uint8_t *)&p, sizeof(p), &server_handle);
273 errno = sdp_error(server_ss);
274 log_err("%s: %m", service_name);