6 * Copyright (c) 2006 Maksim Yevmenkin <m_evmenkin@yahoo.com>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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
30 * $Id: server.c,v 1.9 2006/09/07 21:06:53 max Exp $
34 #include <sys/queue.h>
36 #define L2CAP_SOCKET_CHECKED
37 #include <bluetooth.h>
38 #include <dev/vkbd/vkbd_var.h>
47 #include "bthid_config.h"
52 #define max(x, y) (((x) > (y))? (x) : (y))
54 static int32_t server_accept (bthid_server_p srv, int32_t fd);
55 static int32_t server_process(bthid_server_p srv, int32_t fd);
62 server_init(bthid_server_p srv)
64 struct sockaddr_l2cap l2addr;
68 srv->ctrl = srv->intr = -1;
69 FD_ZERO(&srv->rfdset);
70 FD_ZERO(&srv->wfdset);
71 LIST_INIT(&srv->sessions);
73 /* Open /dev/consolectl */
74 srv->cons = open("/dev/consolectl", O_RDWR);
76 syslog(LOG_ERR, "Could not open /dev/consolectl. %s (%d)",
77 strerror(errno), errno);
81 /* Create control socket */
82 srv->ctrl = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
84 syslog(LOG_ERR, "Could not create control L2CAP socket. " \
85 "%s (%d)", strerror(errno), errno);
90 l2addr.l2cap_len = sizeof(l2addr);
91 l2addr.l2cap_family = AF_BLUETOOTH;
92 memcpy(&l2addr.l2cap_bdaddr, &srv->bdaddr, sizeof(l2addr.l2cap_bdaddr));
93 l2addr.l2cap_psm = htole16(0x11);
94 l2addr.l2cap_bdaddr_type = BDADDR_BREDR;
97 if (bind(srv->ctrl, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0) {
98 syslog(LOG_ERR, "Could not bind control L2CAP socket. " \
99 "%s (%d)", strerror(errno), errno);
105 if (listen(srv->ctrl, 10) < 0) {
106 syslog(LOG_ERR, "Could not listen on control L2CAP socket. " \
107 "%s (%d)", strerror(errno), errno);
113 /* Create intrrupt socket */
114 srv->intr = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
116 syslog(LOG_ERR, "Could not create interrupt L2CAP socket. " \
117 "%s (%d)", strerror(errno), errno);
123 l2addr.l2cap_psm = htole16(0x13);
125 if (bind(srv->intr, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0) {
126 syslog(LOG_ERR, "Could not bind interrupt L2CAP socket. " \
127 "%s (%d)", strerror(errno), errno);
134 if (listen(srv->intr, 10) < 0) {
135 syslog(LOG_ERR, "Could not listen on interrupt L2CAP socket. "\
136 "%s (%d)", strerror(errno), errno);
143 FD_SET(srv->ctrl, &srv->rfdset);
144 FD_SET(srv->intr, &srv->rfdset);
145 srv->maxfd = max(srv->ctrl, srv->intr);
155 server_shutdown(bthid_server_p srv)
163 while (!LIST_EMPTY(&srv->sessions))
164 session_close(LIST_FIRST(&srv->sessions));
166 memset(srv, 0, sizeof(*srv));
170 * Do one server iteration
174 server_do(bthid_server_p srv)
177 fd_set rfdset, wfdset;
185 /* Copy cached version of the fd sets and call select */
186 memcpy(&rfdset, &srv->rfdset, sizeof(rfdset));
187 memcpy(&wfdset, &srv->wfdset, sizeof(wfdset));
189 n = select(srv->maxfd + 1, &rfdset, &wfdset, NULL, &tv);
194 syslog(LOG_ERR, "Could not select(%d, %p, %p). %s (%d)",
195 srv->maxfd + 1, &rfdset, &wfdset, strerror(errno), errno);
200 /* Process descriptors (if any) */
201 for (fd = 0; fd < srv->maxfd + 1 && n > 0; fd ++) {
202 if (FD_ISSET(fd, &rfdset)) {
205 if (fd == srv->ctrl || fd == srv->intr)
206 server_accept(srv, fd);
208 server_process(srv, fd);
209 } else if (FD_ISSET(fd, &wfdset)) {
212 client_connect(srv, fd);
220 * Accept new connection
224 server_accept(bthid_server_p srv, int32_t fd)
228 struct sockaddr_l2cap l2addr;
232 len = sizeof(l2addr);
233 if ((new_fd = accept(fd, (struct sockaddr *) &l2addr, &len)) < 0) {
234 syslog(LOG_ERR, "Could not accept %s connection. %s (%d)",
235 (fd == srv->ctrl)? "control" : "interrupt",
236 strerror(errno), errno);
240 /* Is device configured? */
241 if ((d = get_hid_device(&l2addr.l2cap_bdaddr)) == NULL) {
242 syslog(LOG_ERR, "Rejecting %s connection from %s. " \
243 "Device not configured",
244 (fd == srv->ctrl)? "control" : "interrupt",
245 bt_ntoa(&l2addr.l2cap_bdaddr, NULL));
250 /* Check if we have session for the device */
251 if ((s = session_by_bdaddr(srv, &l2addr.l2cap_bdaddr)) == NULL) {
252 d->new_device = 0; /* reset new device flag */
255 /* Create new inbound session */
256 if ((s = session_open(srv, d)) == NULL) {
257 syslog(LOG_CRIT, "Could not open inbound session "
258 "for %s", bt_ntoa(&l2addr.l2cap_bdaddr, NULL));
264 /* Update descriptors */
265 if (fd == srv->ctrl) {
266 assert(s->ctrl == -1);
268 s->state = (s->intr == -1)? W4INTR : OPEN;
270 assert(s->intr == -1);
272 s->state = (s->ctrl == -1)? W4CTRL : OPEN;
275 FD_SET(new_fd, &srv->rfdset);
276 if (new_fd > srv->maxfd)
279 syslog(LOG_NOTICE, "Accepted %s connection from %s",
280 (fd == srv->ctrl)? "control" : "interrupt",
281 bt_ntoa(&l2addr.l2cap_bdaddr, NULL));
283 /* Register session's vkbd descriptor (if needed) for read */
284 if (s->state == OPEN && d->keyboard) {
285 assert(s->vkbd != -1);
287 FD_SET(s->vkbd, &srv->rfdset);
288 if (s->vkbd > srv->maxfd)
289 srv->maxfd = s->vkbd;
296 * Process data on the connection
300 server_process(bthid_server_p srv, int32_t fd)
302 bthid_session_p s = session_by_fd(srv, fd);
303 int32_t len, to_read;
304 int32_t (*cb)(bthid_session_p, uint8_t *, int32_t);
311 return (0); /* can happen on device disconnect */
316 to_read = sizeof(data.b);
317 } else if (fd == s->intr) {
319 to_read = sizeof(data.b);
321 assert(fd == s->vkbd);
323 cb = kbd_status_changed;
324 to_read = sizeof(data.s);
328 len = read(fd, &data, to_read);
329 } while (len < 0 && errno == EINTR);
332 syslog(LOG_ERR, "Could not read data from %s (%s). %s (%d)",
333 bt_ntoa(&s->bdaddr, NULL),
334 (fd == s->ctrl)? "control" : "interrupt",
335 strerror(errno), errno);
341 syslog(LOG_NOTICE, "Remote device %s has closed %s connection",
342 bt_ntoa(&s->bdaddr, NULL),
343 (fd == s->ctrl)? "control" : "interrupt");
348 (*cb)(s, (uint8_t *) &data, len);