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0770121040
bluez/input/device.c
Claudio Takahasi 0770121040 input: minor code standard fixes
2007-03-22 13:34:37 +00:00

1095 lines
23 KiB
C
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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2007 Marcel Holtmann <marcel@holtmann.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hidp.h>
#include <bluetooth/l2cap.h>
#include <bluetooth/rfcomm.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "dbus.h"
#include "logging.h"
#include "textfile.h"
#include "uinput.h"
#include "device.h"
#include "error.h"
#include "manager.h"
#include "storage.h"
#define INPUT_DEVICE_INTERFACE "org.bluez.input.Device"
#define L2CAP_PSM_HIDP_CTRL 0x11
#define L2CAP_PSM_HIDP_INTR 0x13
#define BUF_SIZE 16
#define UPDOWN_ENABLED 1
static struct device *device_new(bdaddr_t *src, bdaddr_t *dst)
{
struct device *idev;
uint32_t cls;
idev = g_new0(struct device, 1);
bacpy(&idev->src, src);
bacpy(&idev->dst, dst);
read_device_name(src, dst, &idev->name);
read_device_class(src, dst, &cls);
idev->major = (cls >> 8) & 0x1f;
idev->minor = (cls >> 2) & 0x3f;
/* FIXME: hidp could be alloc dynamically */
snprintf(idev->hidp.name, 128, "%s", idev->name);
return idev;
}
static void pending_connect_free(struct pending_connect *pc)
{
if (!pc)
return;
if (pc->conn)
dbus_connection_unref(pc->conn);
if (pc->msg)
dbus_message_unref(pc->msg);
g_free(pc);
}
static void device_free(struct device *idev)
{
if (!idev)
return;
if (idev->name)
g_free(idev->name);
if (idev->hidp.rd_data)
g_free(idev->hidp.rd_data);
if (idev->fake)
g_free(idev->fake);
if (idev->pending_connect)
pending_connect_free(idev->pending_connect);
g_free(idev);
}
static int uinput_create(char *name)
{
struct uinput_dev dev;
int fd, err;
fd = open("/dev/uinput", O_RDWR);
if (fd < 0) {
fd = open("/dev/input/uinput", O_RDWR);
if (fd < 0) {
fd = open("/dev/misc/uinput", O_RDWR);
if (fd < 0) {
err = errno;
error("Can't open input device: %s (%d)",
strerror(err), err);
return -err;
}
}
}
memset(&dev, 0, sizeof(dev));
if (name)
strncpy(dev.name, name, UINPUT_MAX_NAME_SIZE);
dev.id.bustype = BUS_BLUETOOTH;
dev.id.vendor = 0x0000;
dev.id.product = 0x0000;
dev.id.version = 0x0000;
if (write(fd, &dev, sizeof(dev)) < 0) {
err = errno;
error("Can't write device information: %s (%d)",
strerror(err), err);
close(fd);
errno = err;
return -err;
}
ioctl(fd, UI_SET_EVBIT, EV_KEY);
ioctl(fd, UI_SET_EVBIT, EV_REL);
ioctl(fd, UI_SET_EVBIT, EV_REP);
ioctl(fd, UI_SET_KEYBIT, KEY_UP);
ioctl(fd, UI_SET_KEYBIT, KEY_PAGEUP);
ioctl(fd, UI_SET_KEYBIT, KEY_DOWN);
ioctl(fd, UI_SET_KEYBIT, KEY_PAGEDOWN);
if (ioctl(fd, UI_DEV_CREATE, NULL) < 0) {
err = errno;
error("Can't create uinput device: %s (%d)",
strerror(err), err);
close(fd);
errno = err;
return -err;
}
return fd;
}
static const char *create_input_path(uint8_t major, uint8_t minor)
{
static char path[48];
char subpath[32];
static int next_id = 0;
switch (major) {
case 0x04: /* Audio */
switch (minor) {
/* FIXME: Testing required */
case 0x01: /* Wearable Headset Device */
strcpy(subpath, "wearable");
break;
case 0x02: /* Hands-free */
strcpy(subpath, "handsfree");
break;
case 0x06: /* Headphone */
strcpy(subpath, "headphone");
break;
default:
return NULL;
}
break;
case 0x05: /* Peripheral */
switch (minor & 0x30) {
case 0x10:
strcpy(subpath, "keyboard");
break;
case 0x20:
strcpy(subpath, "pointing");
break;
case 0x30:
strcpy(subpath, "combo");
break;
default:
subpath[0] = '\0';
break;
}
if ((minor & 0x0f) && (strlen(subpath) > 0))
strcat(subpath, "/");
switch (minor & 0x0f) {
case 0x00:
break;
case 0x01:
strcat(subpath, "joystick");
break;
case 0x02:
strcat(subpath, "gamepad");
break;
case 0x03:
strcat(subpath, "remotecontrol");
break;
case 0x04:
strcat(subpath, "sensing");
break;
case 0x05:
strcat(subpath, "digitizertablet");
break;
case 0x06:
strcat(subpath, "cardreader");
break;
default:
strcat(subpath, "reserved");
break;
}
break;
default:
return NULL;
}
snprintf(path, 48, "%s/%s%d", INPUT_PATH, subpath, next_id++);
return path;
}
static int decode_key(const char *str)
{
static int mode = UPDOWN_ENABLED, gain = 0;
uint16_t key;
int new_gain;
/* Switch from key up/down to page up/down */
if (strncmp("AT+CKPD=200", str, 11) == 0) {
mode = ~mode;
return KEY_RESERVED;
}
if (strncmp("AT+VG", str, 5))
return KEY_RESERVED;
/* Gain key pressed */
if (strlen(str) != 10)
return KEY_RESERVED;
new_gain = strtol(&str[7], NULL, 10);
if (new_gain <= gain)
key = (mode == UPDOWN_ENABLED ? KEY_UP : KEY_PAGEUP);
else
key = (mode == UPDOWN_ENABLED ? KEY_DOWN : KEY_PAGEDOWN);
gain = new_gain;
return key;
}
static void send_event(int fd, uint16_t type, uint16_t code, int32_t value)
{
struct uinput_event event;
int err;
memset(&event, 0, sizeof(event));
event.type = type;
event.code = code;
event.value = value;
err = write(fd, &event, sizeof(event));
}
static void send_key(int fd, uint16_t key)
{
/* Key press */
send_event(fd, EV_KEY, key, 1);
send_event(fd, EV_SYN, SYN_REPORT, 0);
/* Key release */
send_event(fd, EV_KEY, key, 0);
send_event(fd, EV_SYN, SYN_REPORT, 0);
}
static gboolean rfcomm_io_cb(GIOChannel *chan, GIOCondition cond, gpointer data)
{
struct fake_input *fake = data;
const char *ok = "\r\nOK\r\n";
char buf[BUF_SIZE];
gsize bread = 0, bwritten;
uint16_t key;
if (cond & G_IO_NVAL)
return FALSE;
if (cond & (G_IO_HUP | G_IO_ERR)) {
error("Hangup or error on rfcomm server socket");
goto failed;
}
memset(buf, 0, BUF_SIZE);
if (g_io_channel_read(chan, buf, sizeof(buf) - 1,
&bread) != G_IO_ERROR_NONE) {
error("IO Channel read error");
goto failed;
}
debug("Received: %s", buf);
if (g_io_channel_write(chan, ok, 6, &bwritten) != G_IO_ERROR_NONE) {
error("IO Channel write error");
goto failed;
}
key = decode_key(buf);
if (key != KEY_RESERVED)
send_key(fake->uinput, key);
return TRUE;
failed:
/* FIXME: Missing clean/free fake io channel */
g_io_channel_close(chan);
g_io_channel_unref(chan);
ioctl(fake->uinput, UI_DEV_DESTROY);
close(fake->uinput);
fake->uinput = -1;
return FALSE;
}
static gboolean rfcomm_connect_cb(GIOChannel *chan,
GIOCondition cond, struct device *idev)
{
struct fake_input *fake;
DBusMessage *reply;
socklen_t len;
int ret, err;
fake = idev->fake;
if (cond & G_IO_NVAL) {
g_io_channel_unref(chan);
return FALSE;
}
if (cond & (G_IO_ERR | G_IO_HUP)) {
err = EIO;
goto failed;
}
fake->rfcomm = g_io_channel_unix_get_fd(chan);
len = sizeof(ret);
if (getsockopt(fake->rfcomm, SOL_SOCKET, SO_ERROR, &ret, &len) < 0) {
err = errno;
error("getsockopt(SO_ERROR): %s (%d)", strerror(err), err);
goto failed;
}
if (ret != 0) {
err = ret;
error("connect(): %s (%d)", strerror(err), err);
goto failed;
}
/*
* FIXME: Some headsets required a sco connection
* first to report volume gain key events
*/
fake->uinput = uinput_create(idev->name);
if (fake->uinput < 0) {
err = errno;
goto failed;
}
fake->io = g_io_channel_unix_new(fake->rfcomm);
g_io_channel_set_close_on_unref(fake->io, TRUE);
g_io_add_watch(fake->io, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL,
(GIOFunc) rfcomm_io_cb, fake);
reply = dbus_message_new_method_return(idev->pending_connect->msg);
if (reply) {
dbus_connection_send(idev->pending_connect->conn, reply, NULL);
dbus_message_unref(reply);
}
pending_connect_free(idev->pending_connect);
idev->pending_connect = NULL;
g_io_channel_unref(chan);
return FALSE;
failed:
err_connection_failed(idev->pending_connect->conn,
idev->pending_connect->msg, strerror(err));
pending_connect_free(idev->pending_connect);
idev->pending_connect = NULL;
g_io_channel_unref(chan);
return FALSE;
}
static int rfcomm_connect(struct device *idev)
{
struct sockaddr_rc addr;
GIOChannel *io;
int sk, err;
sk = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
if (sk < 0) {
err = errno;
error("socket: %s (%d)", strerror(err), err);
return -err;
}
io = g_io_channel_unix_new(sk);
if (!io) {
err = -EIO;
error("channel_unix_new failed in rfcomm connect");
goto failed;
}
g_io_channel_set_close_on_unref(io, FALSE);
memset(&addr, 0, sizeof(addr));
addr.rc_family = AF_BLUETOOTH;
bacpy(&addr.rc_bdaddr, &idev->src);
addr.rc_channel = 0;
if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
err = errno;
error("bind: %s (%d)", strerror(err), err);
goto failed;
}
if (set_nonblocking(sk) < 0) {
err = errno;
error("Set non blocking: %s (%d)", strerror(err), err);
goto failed;
}
memset(&addr, 0, sizeof(addr));
addr.rc_family = AF_BLUETOOTH;
bacpy(&addr.rc_bdaddr, &idev->dst);
addr.rc_channel = idev->fake->ch;
if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
char peer[18]; /* FIXME: debug purpose */
if (!(errno == EAGAIN || errno == EINPROGRESS)) {
err = errno;
error("connect() failed: %s (%d)",
strerror(err), err);
goto failed;
}
ba2str(&idev->dst, peer);
debug("RFCOMM connection in progress: %s channel:%d", peer, idev->fake->ch);
g_io_add_watch(io, G_IO_OUT | G_IO_HUP | G_IO_ERR | G_IO_NVAL,
(GIOFunc) rfcomm_connect_cb, idev);
} else {
debug("Connect succeeded with first try");
rfcomm_connect_cb(io, G_IO_OUT, idev);
}
return 0;
failed:
if (io)
g_io_channel_unref(io);
close(sk);
errno = err;
return -err;
}
static int l2cap_connect(struct device *idev,
unsigned short psm, GIOFunc cb)
{
GIOChannel *io;
struct sockaddr_l2 addr;
struct l2cap_options opts;
int sk, err;
if ((sk = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP)) < 0)
return -1;
memset(&addr, 0, sizeof(addr));
addr.l2_family = AF_BLUETOOTH;
bacpy(&addr.l2_bdaddr, &idev->src);
if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0)
goto failed;
if (set_nonblocking(sk) < 0)
goto failed;
memset(&opts, 0, sizeof(opts));
opts.imtu = HIDP_DEFAULT_MTU;
opts.omtu = HIDP_DEFAULT_MTU;
opts.flush_to = 0xffff;
if (setsockopt(sk, SOL_L2CAP, L2CAP_OPTIONS, &opts, sizeof(opts)) < 0)
goto failed;
memset(&addr, 0, sizeof(addr));
addr.l2_family = AF_BLUETOOTH;
bacpy(&addr.l2_bdaddr, &idev->dst);
addr.l2_psm = htobs(psm);
io = g_io_channel_unix_new(sk);
g_io_channel_set_close_on_unref(io, FALSE);
if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
if (!(errno == EAGAIN || errno == EINPROGRESS))
goto failed;
g_io_add_watch(io, G_IO_OUT | G_IO_ERR | G_IO_HUP | G_IO_NVAL,
(GIOFunc) cb, idev);
} else {
cb(io, G_IO_OUT, idev);
}
return 0;
failed:
err = errno;
close(sk);
errno = err;
return -1;
}
static gboolean interrupt_connect_cb(GIOChannel *chan,
GIOCondition cond, struct device *idev)
{
int ctl, isk, ret, err;
socklen_t len;
if (cond & G_IO_NVAL) {
err = EHOSTDOWN;
isk = -1;
goto failed;
}
if (cond & (G_IO_HUP | G_IO_ERR)) {
err = EINTR;
isk = -1;
error("Hangup or error on HIDP interrupt socket");
goto failed;
}
isk = g_io_channel_unix_get_fd(chan);
idev->hidp.intr_sock = isk;
idev->hidp.idle_to = 30 * 60; /* 30 minutes */
len = sizeof(ret);
if (getsockopt(isk, SOL_SOCKET, SO_ERROR, &ret, &len) < 0) {
err = errno;
error("getsockopt(SO_ERROR): %s (%d)", strerror(err), err);
goto failed;
}
if (ret != 0) {
err = ret;
error("connect(): %s (%d)", strerror(ret), ret);
goto failed;
}
ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HIDP);
if (ctl < 0) {
err = errno;
error("Can't open HIDP control socket");
goto failed;
}
if (idev->hidp.subclass & 0x40) {
int ret;
ret = encrypt_link(&idev->src, &idev->dst);
if (ret < 0) {
err = -ret;
close(ctl);
goto failed;
}
}
if (ioctl(ctl, HIDPCONNADD, &idev->hidp) < 0) {
err = errno;
close(ctl);
goto failed;
}
send_message_and_unref(idev->pending_connect->conn,
dbus_message_new_method_return(idev->pending_connect->msg));
close (ctl);
goto cleanup;
failed:
err_connection_failed(idev->pending_connect->conn,
idev->pending_connect->msg, strerror(err));
cleanup:
if (isk > 0)
close(isk);
close(idev->hidp.ctrl_sock);
idev->hidp.intr_sock = -1;
idev->hidp.ctrl_sock = -1;
pending_connect_free(idev->pending_connect);
idev->pending_connect = NULL;
g_io_channel_unref(chan);
return FALSE;
}
static gboolean control_connect_cb(GIOChannel *chan,
GIOCondition cond, struct device *idev)
{
int ret, csk, err;
socklen_t len;
if (cond & G_IO_NVAL) {
err = EHOSTDOWN;
csk = -1;
goto failed;
}
if (cond & (G_IO_HUP | G_IO_ERR)) {
err = EINTR;
csk = -1;
error("Hangup or error on HIDP control socket");
goto failed;
}
csk = g_io_channel_unix_get_fd(chan);
/* Set HID control channel */
idev->hidp.ctrl_sock = csk;
len = sizeof(ret);
if (getsockopt(csk, SOL_SOCKET, SO_ERROR, &ret, &len) < 0) {
err = errno;
error("getsockopt(SO_ERROR): %s (%d)", strerror(err), err);
goto failed;
}
if (ret != 0) {
err = ret;
error("connect(): %s (%d)", strerror(ret), ret);
goto failed;
}
/* Connect to the HID interrupt channel */
if (l2cap_connect(idev, L2CAP_PSM_HIDP_INTR,
(GIOFunc) interrupt_connect_cb) < 0) {
err = errno;
error("L2CAP connect failed:%s (%d)", strerror(errno), errno);
goto failed;
}
g_io_channel_unref(chan);
return FALSE;
failed:
if (csk > 0)
close(csk);
idev->hidp.ctrl_sock = -1;
err_connection_failed(idev->pending_connect->conn,
idev->pending_connect->msg, strerror(err));
pending_connect_free(idev->pending_connect);
idev->pending_connect = NULL;
g_io_channel_unref(chan);
return FALSE;
}
static int disconnect(struct device *idev, uint32_t flags)
{
struct fake_input *fake = idev->fake;
struct hidp_conndel_req req;
struct hidp_conninfo ci;
int ctl, err;
/* Fake input disconnect */
if (fake) {
if (fake->io) {
g_io_channel_close(fake->io);
g_io_channel_unref(fake->io);
fake->io = NULL;
}
if (fake->uinput >= 0) {
ioctl(fake->uinput, UI_DEV_DESTROY);
close(fake->uinput);
fake->uinput = -1;
}
return 0;
}
/* Standard HID disconnect */
ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HIDP);
if (ctl < 0) {
error("Can't open HIDP control socket");
return -errno;
}
memset(&ci, 0, sizeof(struct hidp_conninfo));
bacpy(&ci.bdaddr, &idev->dst);
if ((ioctl(ctl, HIDPGETCONNINFO, &ci) < 0) ||
(ci.state != BT_CONNECTED)) {
errno = ENOTCONN;
goto fail;
}
memset(&req, 0, sizeof(struct hidp_conndel_req));
bacpy(&req.bdaddr, &idev->dst);
req.flags = flags;
if (ioctl(ctl, HIDPCONNDEL, &req) < 0) {
error("Can't delete the HID device: %s(%d)",
strerror(errno), errno);
goto fail;
}
close(ctl);
return 0;
fail:
err = errno;
close(ctl);
errno = err;
idev->hidp.intr_sock = -1;
idev->hidp.ctrl_sock = -1;
return -err;
}
static int is_connected(struct device *idev)
{
struct fake_input *fake = idev->fake;
struct hidp_conninfo ci;
int ctl;
/* Fake input */
if (fake) {
if (fake->io)
return 1;
else
return 0;
}
/* Standard HID */
ctl = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HIDP);
if (ctl < 0)
return 0;
memset(&ci, 0, sizeof(struct hidp_conninfo));
bacpy(&ci.bdaddr, &idev->dst);
if (ioctl(ctl, HIDPGETCONNINFO, &ci) < 0) {
close(ctl);
return 0;
}
close(ctl);
if (ci.state != BT_CONNECTED)
return 0;
else
return 1;
}
/*
* Input Device methods
*/
static DBusHandlerResult device_connect(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct device *idev = data;
if (idev->pending_connect)
return err_connection_failed(conn, msg, "Connection in progress");
if (is_connected(idev))
return err_already_connected(conn, msg);
idev->pending_connect = g_try_new0(struct pending_connect, 1);
if (!idev->pending_connect) {
error("Out of memory when allocating new struct pending_connect");
return DBUS_HANDLER_RESULT_NEED_MEMORY;
}
idev->pending_connect->conn = dbus_connection_ref(conn);
idev->pending_connect->msg = dbus_message_ref(msg);
/* Fake input device */
if (idev->fake) {
if (rfcomm_connect(idev) < 0) {
const char *str = strerror(errno);
error("RFCOMM connect failed: %s(%d)", str, errno);
pending_connect_free(idev->pending_connect);
idev->pending_connect = NULL;
return err_connection_failed(conn, msg, str);
}
return DBUS_HANDLER_RESULT_HANDLED;
}
/* HID devices */
if (l2cap_connect(idev, L2CAP_PSM_HIDP_CTRL,
(GIOFunc) control_connect_cb) < 0) {
error("L2CAP connect failed: %s(%d)", strerror(errno), errno);
pending_connect_free(idev->pending_connect);
idev->pending_connect = NULL;
return err_connection_failed(conn, msg, strerror(errno));
}
return DBUS_HANDLER_RESULT_HANDLED;
}
static DBusHandlerResult device_disconnect(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct device *idev = data;
if (disconnect(idev, 0) < 0)
return err_failed(conn, msg, strerror(errno));
return send_message_and_unref(conn,
dbus_message_new_method_return(msg));
}
static DBusHandlerResult device_is_connected(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct device *idev = data;
DBusMessage *reply;
dbus_bool_t connected;
connected = is_connected(idev);
reply = dbus_message_new_method_return(msg);
if (!reply)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
dbus_message_append_args(reply,
DBUS_TYPE_BOOLEAN, &connected,
DBUS_TYPE_INVALID);
return send_message_and_unref(conn, reply);
}
static DBusHandlerResult device_get_address(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct device *idev = data;
DBusMessage *reply;
char addr[18];
const char *paddr = addr;
ba2str(&idev->dst, addr);
reply = dbus_message_new_method_return(msg);
if (!reply)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
dbus_message_append_args(reply,
DBUS_TYPE_STRING, &paddr,
DBUS_TYPE_INVALID);
return send_message_and_unref(conn, reply);
}
static DBusHandlerResult device_get_name(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct device *idev = data;
DBusMessage *reply;
const char *pname = idev->hidp.name;
reply = dbus_message_new_method_return(msg);
if (!reply)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
dbus_message_append_args(reply,
DBUS_TYPE_STRING, &pname,
DBUS_TYPE_INVALID);
return send_message_and_unref(conn, reply);
}
static DBusHandlerResult device_get_product_id(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct device *idev = data;
DBusMessage *reply;
reply = dbus_message_new_method_return(msg);
if (!reply)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
dbus_message_append_args(reply,
DBUS_TYPE_UINT16, &idev->hidp.product,
DBUS_TYPE_INVALID);
return send_message_and_unref(conn, reply);
}
static DBusHandlerResult device_get_vendor_id(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct device *idev = data;
DBusMessage *reply;
reply = dbus_message_new_method_return(msg);
if (!reply)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
dbus_message_append_args(reply,
DBUS_TYPE_UINT16, &idev->hidp.vendor,
DBUS_TYPE_INVALID);
return send_message_and_unref(conn, reply);
}
static DBusHandlerResult device_set_timeout(DBusConnection *conn,
DBusMessage *msg, void *data)
{
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
static DBusHandlerResult device_message(DBusConnection *conn,
DBusMessage *msg, void *data)
{
const char *iface, *member;
iface = dbus_message_get_interface(msg);
member = dbus_message_get_member(msg);
/* Accept messages from the input interface only */
if (strcmp(INPUT_DEVICE_INTERFACE, iface))
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
if (strcmp(member, "Connect") == 0)
return device_connect(conn, msg, data);
if (strcmp(member, "Disconnect") == 0)
return device_disconnect(conn, msg, data);
if (strcmp(member, "IsConnected") == 0)
return device_is_connected(conn, msg, data);
if (strcmp(member, "GetAddress") == 0)
return device_get_address(conn, msg, data);
if (strcmp(member, "GetName") == 0)
return device_get_name(conn, msg, data);
if (strcmp(member, "GetProductId") == 0)
return device_get_product_id(conn, msg, data);
if (strcmp(member, "GetVendorId") == 0)
return device_get_vendor_id(conn, msg, data);
if (strcmp(member, "SetTimeout") == 0)
return device_set_timeout(conn, msg, data);
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
static void device_unregister(DBusConnection *conn, void *data)
{
struct device *idev = data;
/* Disconnect if applied */
disconnect(idev, (1 << HIDP_VIRTUAL_CABLE_UNPLUG));
device_free(idev);
}
/* Virtual table to handle device object path hierarchy */
static const DBusObjectPathVTable device_table = {
.message_function = device_message,
.unregister_function = device_unregister,
};
/*
* Input registration functions
*/
static int register_path(DBusConnection *conn, const char *path, struct device *idev)
{
DBusMessage *msg;
if (!dbus_connection_register_object_path(conn, path,
&device_table, idev)) {
error("Input device path registration failed");
return -1;
}
msg = dbus_message_new_signal(INPUT_PATH,
INPUT_MANAGER_INTERFACE, "DeviceCreated");
if (!msg)
return -1;
dbus_message_append_args(msg,
DBUS_TYPE_STRING, &path,
DBUS_TYPE_INVALID);
send_message_and_unref(conn, msg);
info("Created input device: %s", path);
return 0;
}
int input_device_register(DBusConnection *conn, bdaddr_t *src, bdaddr_t *dst,
struct hidp_connadd_req *hid, const char **ppath)
{
struct device *idev;
const char *path;
idev = device_new(src, dst);
path = create_input_path(idev->major, idev->minor);
/* rd_data must not be deallocated since the memory address is copied */
memcpy(&idev->hidp, hid, sizeof(struct hidp_connadd_req));
if (register_path(conn, path, idev) < 0)
return -1;
if (*ppath)
*ppath = path;
return 0;
}
int fake_input_register(DBusConnection *conn, bdaddr_t *src,
bdaddr_t *dst, uint8_t ch, const char **ppath)
{
struct device *idev;
const char *path;
idev = device_new(src, dst);
path = create_input_path(idev->major, idev->minor);
idev->fake = g_new0(struct fake_input, 1);
idev->fake->ch = ch;
if (register_path(conn, path, idev) < 0)
return -1;
if (*ppath)
*ppath = path;
return 0;
}
int input_device_unregister(DBusConnection *conn, const char *path)
{
DBusMessage *msg;
if (!dbus_connection_unregister_object_path(conn, path)) {
error("Input device path unregister failed");
return -1;
}
msg = dbus_message_new_signal(INPUT_PATH,
INPUT_MANAGER_INTERFACE, "DeviceRemoved");
if (!msg)
return -1;
dbus_message_append_args(msg,
DBUS_TYPE_STRING, &path,
DBUS_TYPE_INVALID);
send_message_and_unref(conn, msg);
return 0;
}
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