Start committing Bluetooth HID (Human Interface Device) support.

Note: bthidd(8) is still not complete. Need to commit kernel
support (a-la Linux /dev/input) to feed HID events into kernel.
Also need to write bthidd(8) and bthidd.conf(5) man pages.

1 files changed, 244 insertions, 0 deletions

diff --git a/usr.sbin/bluetooth/bthidd/client.c b/usr.sbin/bluetooth/bthidd/client.c
new file mode 100644
index 0000000..cc611bd
--- /dev/null
+++ b/usr.sbin/bluetooth/bthidd/client.c
@@ -0,0 +1,244 @@
+/*
+ * client.c
+ *
+ * Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: client.c,v 1.6 2004/02/26 21:57:55 max Exp $
+ * $FreeBSD$
+ */
+
+#include <sys/queue.h>
+#include <assert.h>
+#include <bluetooth.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <unistd.h>
+#include <usbhid.h>
+#include "bthidd.h"
+#include "bthid_config.h"
+
+static int	client_socket(bdaddr_p bdaddr, int psm);
+
+/*
+ * Get next config entry and create outbound connection (if required)
+ *
+ * XXX	Do only one device at a time. At least one of my devices (3COM
+ *	Bluetooth PCCARD) rejects Create_Connection command if another
+ *	Create_Connection command is still pending. Weird...
+ */
+
+static int	connect_in_progress = 0;
+
+int
+client_rescan(bthid_server_p srv)
+{
+	static hid_device_p	d = NULL;
+	bthid_session_p		s = NULL;
+
+	assert(srv != NULL);
+
+	if (connect_in_progress)
+		return (0); /* another connect is still pending */ 
+
+	d = get_next_hid_device(d);
+	if (d == NULL)
+		return (0); /* XXX should not happen? empty config? */
+
+	if ((s = session_by_bdaddr(srv, &d->bdaddr)) != NULL)
+		return (0); /* session already active */
+
+	if (!d->new_device) {
+		if (d->reconnect_initiate)
+			return (0); /* device will initiate reconnect */
+	}
+
+	syslog(LOG_NOTICE, "Opening outbound session for %s " \
+		"(new_device=%d, reconnect_initiate=%d)",
+		bt_ntoa(&d->bdaddr, NULL), d->new_device, d->reconnect_initiate);
+
+	if ((s = session_open(srv, &d->bdaddr)) == NULL) {
+		syslog(LOG_CRIT, "Could not open outbound session for %s. " \
+			"Not enough memory", bt_ntoa(&d->bdaddr, NULL));
+		return (-1);
+	}
+
+	/* Open control channel */
+	s->ctrl = client_socket(&s->bdaddr, d->control_psm);
+	if (s->ctrl < 0) {
+		syslog(LOG_ERR, "Could not open control channel to %s. %s (%d)",
+			bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno);
+		session_close(s);
+		return (-1);
+	}
+
+	s->state = W4CTRL;
+
+	FD_SET(s->ctrl, &srv->wfdset);
+	if (s->ctrl > srv->maxfd)
+		srv->maxfd = s->ctrl;
+
+	connect_in_progress = 1;
+
+	return (0);
+}
+
+/*
+ * Process connect on the socket
+ */
+
+int
+client_connect(bthid_server_p srv, int fd)
+{
+	bthid_session_p	s = NULL;
+	hid_device_p	d = NULL;
+	int		error, len;
+
+	assert(srv != NULL);
+	assert(fd >= 0);
+
+	s = session_by_fd(srv, fd);
+	assert(s != NULL);
+
+	d = get_hid_device(&s->bdaddr);
+	assert(d != NULL);
+
+	error = 0;
+	len = sizeof(error);
+	if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &len) < 0) {
+		syslog(LOG_ERR, "Could not get socket error for %s. %s (%d)",
+			bt_ntoa(&s->bdaddr, NULL), strerror(errno), errno);
+		session_close(s);
+		connect_in_progress = 0;
+
+		return (-1);
+	}
+
+	if (error != 0) {
+		syslog(LOG_ERR, "Could not connect to %s. %s (%d)",
+			bt_ntoa(&s->bdaddr, NULL), strerror(error), error);
+		session_close(s);
+		connect_in_progress = 0;
+
+		return (0);
+	}
+
+	switch (s->state) {
+	case W4CTRL: /* Control channel is open */
+		assert(s->ctrl == fd);
+		assert(s->intr == -1);
+
+		/* Open interrupt channel */
+		s->intr = client_socket(&s->bdaddr, d->interrupt_psm);
+		if (s->intr < 0) { 
+			syslog(LOG_ERR, "Could not open interrupt channel " \
+				"to %s. %s (%d)", bt_ntoa(&s->bdaddr, NULL),
+				strerror(errno), errno);
+			session_close(s);
+			connect_in_progress = 0;
+
+			return (-1);
+		}
+
+		s->state = W4INTR;
+
+		FD_SET(s->intr, &srv->wfdset);
+		if (s->intr > srv->maxfd)
+			srv->maxfd = s->intr;
+
+		d->new_device = 0; /* reset new device flag */
+		write_hids_file();
+		break;
+
+	case W4INTR: /* Interrupt channel is open */
+		assert(s->ctrl != -1);
+		assert(s->intr == fd);
+
+		s->state = OPEN;
+		connect_in_progress = 0;
+		break;
+
+	default:
+		assert(0);
+		break;
+	}
+
+	/* Move fd to from the write fd set into read fd set */
+	FD_CLR(fd, &srv->wfdset);
+	FD_SET(fd, &srv->rfdset);
+
+	return (0);
+}
+
+/*
+ * Create bound non-blocking socket and initiate connect
+ */
+
+static int
+client_socket(bdaddr_p bdaddr, int psm)
+{
+	struct sockaddr_l2cap	l2addr;
+	int			s, m;
+
+	s = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BLUETOOTH_PROTO_L2CAP);
+	if (s < 0)
+		return (-1);
+
+	m = fcntl(s, F_GETFL);
+	if (m < 0) {
+		close(s);
+		return (-1);
+	}
+
+	if (fcntl(s, F_SETFL, (m|O_NONBLOCK)) < 0) {
+		close(s);
+		return (-1);
+	}
+
+	l2addr.l2cap_len = sizeof(l2addr);
+	l2addr.l2cap_family = AF_BLUETOOTH;
+	memcpy(&l2addr.l2cap_bdaddr, NG_HCI_BDADDR_ANY, sizeof(l2addr.l2cap_bdaddr));
+	l2addr.l2cap_psm = 0;
+
+	if (bind(s, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0) {
+		close(s);
+		return (-1);
+	}
+
+	memcpy(&l2addr.l2cap_bdaddr, bdaddr, sizeof(l2addr.l2cap_bdaddr));
+	l2addr.l2cap_psm = psm;
+
+	if (connect(s, (struct sockaddr *) &l2addr, sizeof(l2addr)) < 0 &&
+	    errno != EINPROGRESS) {
+		close(s);
+		return (-1);
+	}
+
+	return (s);
+}
+