1 /* $NetBSD: client.c,v 1.2 2008/12/06 20:01:14 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: client.c,v 1.2 2008/12/06 20:01:14 plunky Exp $");
33 #define L2CAP_SOCKET_CHECKED
34 #include <bluetooth.h>
43 static void client_query(void);
48 struct sockaddr_l2cap sa;
54 if (bdaddr_any(&remote_bdaddr))
60 fd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
62 log_err("Could not open L2CAP socket: %m");
66 memset(&sa, 0, sizeof(sa));
67 sa.l2cap_family = AF_BLUETOOTH;
68 sa.l2cap_len = sizeof(sa);
69 sa.l2cap_bdaddr_type = BDADDR_BREDR;
72 bdaddr_copy(&sa.l2cap_bdaddr, &local_bdaddr);
73 if (bind(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
74 log_err("Could not bind client socket: %m");
79 if (setsockopt(fd, SOL_L2CAP, SO_L2CAP_IMTU, &mru, sizeof(mru)) == -1) {
80 log_err("Could not set L2CAP IMTU (%d): %m", mru);
84 log_info("Opening connection to service 0x%4.4x at %s",
85 service_class, bt_ntoa(&remote_bdaddr, NULL));
87 sa.l2cap_psm = htole16(l2cap_psm);
88 bdaddr_copy(&sa.l2cap_bdaddr, &remote_bdaddr);
89 if (connect(fd, (struct sockaddr *)&sa, sizeof(sa)) == -1) {
90 log_err("Could not connect: %m");
95 if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_IMTU, &mru, &len) == -1) {
96 log_err("Could not get IMTU: %m");
99 if (mru < BNEP_MTU_MIN) {
100 log_err("L2CAP IMTU too small (%d)", mru);
105 if (getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &n, &len) == -1) {
106 log_err("Could not read SO_RCVBUF");
109 if (n < (mru * 10)) {
111 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &n, sizeof(n)) == -1)
112 log_info("Could not increase SO_RCVBUF (from %d)", n);
116 if (getsockopt(fd, SOL_L2CAP, SO_L2CAP_OMTU, &mtu, &len) == -1) {
117 log_err("Could not get L2CAP OMTU: %m");
120 if (mtu < BNEP_MTU_MIN) {
121 log_err("L2CAP OMTU too small (%d)", mtu);
126 if (getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, &len) == -1) {
127 log_err("Could not get socket send buffer size: %m");
133 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n)) == -1) {
134 log_err("Could not set socket send buffer size (%d): %m", n);
140 if (setsockopt(fd, SOL_SOCKET, SO_SNDLOWAT, &n, sizeof(n)) == -1) {
141 log_err("Could not set socket low water mark (%d): %m", n);
146 chan = channel_alloc();
150 chan->send = bnep_send;
151 chan->recv = bnep_recv;
154 b2eaddr(chan->raddr, &remote_bdaddr);
155 b2eaddr(chan->laddr, &local_bdaddr);
156 chan->state = CHANNEL_WAIT_CONNECT_RSP;
157 channel_timeout(chan, 10);
158 if (!channel_open(chan, fd))
161 bnep_send_control(chan, BNEP_SETUP_CONNECTION_REQUEST,
162 2, service_class, SDP_SERVICE_CLASS_PANU);
173 uint8_t *seq0, *seq1;
175 attr.flags = SDP_ATTR_INVALID;
177 attr.vlen = sizeof(buffer);
180 range = SDP_ATTR_RANGE(SDP_ATTR_PROTOCOL_DESCRIPTOR_LIST,
181 SDP_ATTR_PROTOCOL_DESCRIPTOR_LIST);
183 ss = sdp_open(&local_bdaddr, &remote_bdaddr);
184 if (ss == NULL || (errno = sdp_error(ss)) != 0) {
185 log_err("%s: %m", service_name);
189 log_info("Searching for %s service at %s",
190 service_name, bt_ntoa(&remote_bdaddr, NULL));
192 rv = sdp_search(ss, 1, &service_class, 1, &range, 1, &attr);
194 log_err("%s: %s", service_name, strerror(sdp_error(ss)));
200 if (attr.flags != SDP_ATTR_OK
201 || attr.attr != SDP_ATTR_PROTOCOL_DESCRIPTOR_LIST) {
202 log_err("%s service not found", service_name);
207 * we expect the following protocol descriptor list
211 * uuid value == L2CAP
212 * uint16 value16 => PSM
216 if (_sdp_get_seq(&attr.value, attr.value + attr.vlen, &seq0)
217 && _sdp_get_seq(&seq0, attr.value, &seq1)
218 && _sdp_match_uuid16(&seq1, seq0, SDP_UUID_PROTOCOL_L2CAP)
219 && _sdp_get_uint16(&seq1, seq0, &l2cap_psm)
220 && _sdp_get_seq(&seq0, attr.value, &seq1)
221 && _sdp_match_uuid16(&seq1, seq0, SDP_UUID_PROTOCOL_BNEP)) {
222 log_info("Found PSM %d for service %s", l2cap_psm, service_name);
226 log_err("%s query failed", service_name);