FreeBSD-5.3/usr.sbin/bluetooth/bthidd/hid.c
/*
* hid.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: hid.c,v 1.3 2004/02/26 21:47:35 max Exp $
* $FreeBSD: src/usr.sbin/bluetooth/bthidd/hid.c,v 1.1 2004/04/10 00:18:00 emax Exp $
*/
#include <sys/consio.h>
#include <sys/mouse.h>
#include <sys/queue.h>
#include <assert.h>
#include <bluetooth.h>
#include <errno.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <usbhid.h>
#include "bthidd.h"
#include "bthid_config.h"
#undef min
#define min(x, y) (((x) < (y))? (x) : (y))
/*
* Process data from control channel
*/
int
hid_control(bthid_session_p s, char *data, int len)
{
assert(s != NULL);
assert(data != NULL);
assert(len > 0);
switch (data[0] >> 4) {
case 0: /* Handshake (response to command) */
if (data[0] & 0xf)
syslog(LOG_ERR, "Got handshake message with error " \
"response 0x%x from %s",
data[0], bt_ntoa(&s->bdaddr, NULL));
break;
case 1: /* HID Control */
switch (data[0] & 0xf) {
case 0: /* NOP */
break;
case 1: /* Hard reset */
case 2: /* Soft reset */
syslog(LOG_WARNING, "Device %s requested %s reset",
bt_ntoa(&s->bdaddr, NULL),
((data[0] & 0xf) == 1)? "hard" : "soft");
break;
case 3: /* Suspend */
syslog(LOG_NOTICE, "Device %s requested Suspend",
bt_ntoa(&s->bdaddr, NULL));
break;
case 4: /* Exit suspend */
syslog(LOG_NOTICE, "Device %s requested Exit Suspend",
bt_ntoa(&s->bdaddr, NULL));
break;
case 5: /* Virtual cable unplug */
syslog(LOG_NOTICE, "Device %s unplugged virtual cable",
bt_ntoa(&s->bdaddr, NULL));
session_close(s);
break;
default:
syslog(LOG_WARNING, "Device %s sent unknown " \
"HID_Control message 0x%x",
bt_ntoa(&s->bdaddr, NULL), data[0]);
break;
}
break;
default:
syslog(LOG_WARNING, "Got unexpected message 0x%x on Control " \
"channel from %s", data[0], bt_ntoa(&s->bdaddr, NULL));
break;
}
return (0);
}
/*
* Process data from the interrupt channel
*/
int
hid_interrupt(bthid_session_p s, char *data, int len)
{
hid_device_p hid_device = NULL;
hid_data_t d;
hid_item_t h;
int report_id, usage, page, val,
mouse_x, mouse_y, mouse_z, mouse_butt,
nkeys, keys[32]; /* XXX how big keys[] should be? */
assert(s != NULL);
assert(data != NULL);
if (len < 3) {
syslog(LOG_ERR, "Got short message (%d bytes) on Interrupt " \
"channel from %s", len, bt_ntoa(&s->bdaddr, NULL));
return (-1);
}
if ((unsigned char) data[0] != 0xa1) {
syslog(LOG_ERR, "Got unexpected message 0x%x on " \
"Interrupt channel from %s",
data[0], bt_ntoa(&s->bdaddr, NULL));
return (-1);
}
report_id = data[1];
data += 2;
len -= 2;
hid_device = get_hid_device(&s->bdaddr);
assert(hid_device != NULL);
mouse_x = mouse_y = mouse_z = mouse_butt = nkeys = 0;
for (d = hid_start_parse(hid_device->desc, 1 << hid_input, -1);
hid_get_item(d, &h) > 0; ) {
if ((h.flags & HIO_CONST) || (h.report_ID != report_id))
continue;
page = HID_PAGE(h.usage);
usage = HID_USAGE(h.usage);
val = hid_get_data(data, &h);
switch (page) {
case HUP_GENERIC_DESKTOP:
switch (usage) {
case HUG_X:
mouse_x = val;
break;
case HUG_Y:
mouse_y = val;
break;
case HUG_WHEEL:
mouse_z = -val;
break;
case HUG_SYSTEM_SLEEP:
if (val)
syslog(LOG_NOTICE, "Sleep button pressed");
break;
}
break;
case HUP_KEYBOARD:
if (h.flags & HIO_VARIABLE) {
if (val && nkeys < sizeof(keys))
keys[nkeys ++] = usage;
} else {
if (val && nkeys < sizeof(keys))
keys[nkeys ++] = val;
data ++;
len --;
len = min(len, h.report_size);
while (len > 0) {
val = hid_get_data(data, &h);
if (val && nkeys < sizeof(keys))
keys[nkeys ++] = val;
data ++;
len --;
}
}
break;
case HUP_BUTTON:
mouse_butt |= (val << (usage - 1));
break;
case HUP_MICROSOFT:
switch (usage) {
case 0xfe01:
if (!hid_device->battery_power)
break;
switch (val) {
case 1:
syslog(LOG_INFO, "Battery is OK on %s",
bt_ntoa(&s->bdaddr, NULL));
break;
case 2:
syslog(LOG_NOTICE, "Low battery on %s",
bt_ntoa(&s->bdaddr, NULL));
break;
case 3:
syslog(LOG_WARNING, "Very low battery "\
"on %s",
bt_ntoa(&s->bdaddr, NULL));
break;
}
break;
}
break;
}
}
hid_end_parse(d);
/*
* XXX FIXME Feed mouse and keyboard events into kernel
* The code block below works, but it is not
* good enough
*/
if (mouse_x != 0 || mouse_y != 0 || mouse_z != 0 || mouse_butt != 0) {
struct mouse_info mi;
mi.operation = MOUSE_ACTION;
mi.u.data.x = mouse_x;
mi.u.data.y = mouse_y;
mi.u.data.z = mouse_z;
mi.u.data.buttons = mouse_butt;
if (ioctl(s->srv->cons, CONS_MOUSECTL, &mi) < 0)
syslog(LOG_ERR, "Could not process mouse events from " \
"%s. %s (%d)", bt_ntoa(&s->bdaddr, NULL),
strerror(errno), errno);
}
return (0);
}