1/*
2 * client.c
3 */
4
5/*-
6 * Copyright (c) 2006 Maksim Yevmenkin <m_evmenkin@yahoo.com>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright

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22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $Id: client.c,v 1.7 2006/09/07 21:06:53 max Exp $
31 * $FreeBSD: head/usr.sbin/bluetooth/bthidd/client.c 162128 2006-09-07 21:47:49Z emax $
32 */
33
34#include <sys/queue.h>
35#include <assert.h>
36#include <bluetooth.h>
37#include <errno.h>
38#include <fcntl.h>
39#include <stdio.h>
40#include <stdlib.h>
41#include <string.h>
42#include <syslog.h>
43#include <unistd.h>
44#include <usbhid.h>
45#include "bthid_config.h"
46#include "bthidd.h"
47
48static int32_t client_socket(bdaddr_p bdaddr, int32_t psm);
49
50/*
51 * Get next config entry and create outbound connection (if required)
52 *
53 * XXX Do only one device at a time. At least one of my devices (3COM
54 * Bluetooth PCCARD) rejects Create_Connection command if another
55 * Create_Connection command is still pending. Weird...
56 */
57
58static int32_t connect_in_progress = 0;
59
60int32_t
61client_rescan(bthid_server_p srv)
62{
63 static hid_device_p d;
64 bthid_session_p s;
65
66 assert(srv != NULL);
67
68 if (connect_in_progress)
69 return (0); /* another connect is still pending */
70
71 d = get_next_hid_device(d);
72 if (d == NULL)

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79 if (d->reconnect_initiate)
80 return (0); /* device will initiate reconnect */
81 }
82
83 syslog(LOG_NOTICE, "Opening outbound session for %s " \
84 "(new_device=%d, reconnect_initiate=%d)",
85 bt_ntoa(&d->bdaddr, NULL), d->new_device, d->reconnect_initiate);
86
87 if ((s = session_open(srv, d)) == NULL) {
88 syslog(LOG_CRIT, "Could not create outbound session for %s",
89 bt_ntoa(&d->bdaddr, NULL));
90 return (-1);
91 }
92
93 /* Open control channel */
94 s->ctrl = client_socket(&s->bdaddr, d->control_psm);
95 if (s->ctrl < 0) {
96 syslog(LOG_ERR, "Could not open control channel to %s. %s (%d)",
97 bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno);

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109
110 return (0);
111}
112
113/*
114 * Process connect on the socket
115 */
116
117int32_t
118client_connect(bthid_server_p srv, int32_t fd)
119{
120 bthid_session_p s;
121 hid_device_p d;
122 int32_t error, len;
123
124 assert(srv != NULL);
125 assert(fd >= 0);
126
127 s = session_by_fd(srv, fd);
128 assert(s != NULL);
129
130 d = get_hid_device(&s->bdaddr);

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178 break;
179
180 case W4INTR: /* Interrupt channel is open */
181 assert(s->ctrl != -1);
182 assert(s->intr == fd);
183
184 s->state = OPEN;
185 connect_in_progress = 0;
186
187 /* Register session's vkbd descriptor (if any) for read */
188 if (s->state == OPEN && d->keyboard) {
189 assert(s->vkbd != -1);
190
191 FD_SET(s->vkbd, &srv->rfdset);
192 if (s->vkbd > srv->maxfd)
193 srv->maxfd = s->vkbd;
194 }
195 break;
196
197 default:
198 assert(0);
199 break;
200 }
201
202 /* Move fd to from the write fd set into read fd set */
203 FD_CLR(fd, &srv->wfdset);
204 FD_SET(fd, &srv->rfdset);
205
206 return (0);
207}
208
209/*
210 * Create bound non-blocking socket and initiate connect
211 */
212
213static int
214client_socket(bdaddr_p bdaddr, int32_t psm)
215{
216 struct sockaddr_l2cap l2addr;
217 int32_t s, m;
218
219 s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
220 if (s < 0)
221 return (-1);
222
223 m = fcntl(s, F_GETFL);
224 if (m < 0) {
225 close(s);
226 return (-1);
227 }
228
229 if (fcntl(s, F_SETFL, (m|O_NONBLOCK)) < 0) {
230 close(s);
231 return (-1);
232 }
233
234 l2addr.l2cap_len = sizeof(l2addr);
235 l2addr.l2cap_family = AF_BLUETOOTH;
236 memset(&l2addr.l2cap_bdaddr, 0, sizeof(l2addr.l2cap_bdaddr));
237 l2addr.l2cap_psm = 0;
238
239 if (bind(s, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0) {
240 close(s);
241 return (-1);
242 }
243
244 memcpy(&l2addr.l2cap_bdaddr, bdaddr, sizeof(l2addr.l2cap_bdaddr));
245 l2addr.l2cap_psm = psm;
246
247 if (connect(s, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0 &&
248 errno != EINPROGRESS) {
249 close(s);
250 return (-1);
251 }
252
253 return (s);
254}
255