M7350/external/bluetooth/bluez/profiles/input/server.c
2024-09-09 08:57:42 +00:00

343 lines
7.4 KiB
C

/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2010 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 <unistd.h>
#include <stdbool.h>
#include <errno.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/sdp.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "src/log.h"
#include "src/uuid-helper.h"
#include "btio/btio.h"
#include "lib/uuid.h"
#include "src/adapter.h"
#include "src/device.h"
#include "src/profile.h"
#include "device.h"
#include "server.h"
static GSList *servers = NULL;
struct input_server {
bdaddr_t src;
GIOChannel *ctrl;
GIOChannel *intr;
GIOChannel *confirm;
};
static int server_cmp(gconstpointer s, gconstpointer user_data)
{
const struct input_server *server = s;
const bdaddr_t *src = user_data;
return bacmp(&server->src, src);
}
struct sixaxis_data {
GIOChannel *chan;
uint16_t psm;
};
static void sixaxis_sdp_cb(struct btd_device *dev, int err, void *user_data)
{
struct sixaxis_data *data = user_data;
const bdaddr_t *src;
DBG("err %d (%s)", err, strerror(-err));
if (err < 0)
goto fail;
src = btd_adapter_get_address(device_get_adapter(dev));
if (input_device_set_channel(src, device_get_address(dev), data->psm,
data->chan) < 0)
goto fail;
g_io_channel_unref(data->chan);
g_free(data);
return;
fail:
g_io_channel_shutdown(data->chan, TRUE, NULL);
g_io_channel_unref(data->chan);
g_free(data);
}
static void sixaxis_browse_sdp(const bdaddr_t *src, const bdaddr_t *dst,
GIOChannel *chan, uint16_t psm)
{
struct btd_device *device;
struct sixaxis_data *data;
device = btd_adapter_find_device(adapter_find(src), dst, BDADDR_BREDR);
if (!device)
return;
data = g_new0(struct sixaxis_data, 1);
data->chan = g_io_channel_ref(chan);
data->psm = psm;
if (psm == L2CAP_PSM_HIDP_CTRL)
device_discover_services(device);
device_wait_for_svc_complete(device, sixaxis_sdp_cb, data);
}
static bool dev_is_sixaxis(const bdaddr_t *src, const bdaddr_t *dst)
{
struct btd_device *device;
uint16_t vid, pid;
device = btd_adapter_find_device(adapter_find(src), dst, BDADDR_BREDR);
if (!device)
return false;
vid = btd_device_get_vendor(device);
pid = btd_device_get_product(device);
/* DualShock 3 */
if (vid == 0x054c && pid == 0x0268)
return true;
/* DualShock 4 */
if (vid == 0x054c && pid == 0x05c4)
return true;
return false;
}
static void connect_event_cb(GIOChannel *chan, GError *err, gpointer data)
{
uint16_t psm;
bdaddr_t src, dst;
char address[18];
GError *gerr = NULL;
int ret;
if (err) {
error("%s", err->message);
return;
}
bt_io_get(chan, &gerr,
BT_IO_OPT_SOURCE_BDADDR, &src,
BT_IO_OPT_DEST_BDADDR, &dst,
BT_IO_OPT_PSM, &psm,
BT_IO_OPT_INVALID);
if (gerr) {
error("%s", gerr->message);
g_error_free(gerr);
g_io_channel_shutdown(chan, TRUE, NULL);
return;
}
ba2str(&dst, address);
DBG("Incoming connection from %s on PSM %d", address, psm);
ret = input_device_set_channel(&src, &dst, psm, chan);
if (ret == 0)
return;
if (ret == -ENOENT && dev_is_sixaxis(&src, &dst)) {
sixaxis_browse_sdp(&src, &dst, chan, psm);
return;
}
error("Refusing input device connect: %s (%d)", strerror(-ret), -ret);
/* Send unplug virtual cable to unknown devices */
if (ret == -ENOENT && psm == L2CAP_PSM_HIDP_CTRL) {
unsigned char unplug = 0x15;
int sk = g_io_channel_unix_get_fd(chan);
if (write(sk, &unplug, sizeof(unplug)) < 0)
error("Unable to send virtual cable unplug");
}
g_io_channel_shutdown(chan, TRUE, NULL);
}
static void auth_callback(DBusError *derr, void *user_data)
{
struct input_server *server = user_data;
bdaddr_t src, dst;
GError *err = NULL;
bt_io_get(server->confirm, &err,
BT_IO_OPT_SOURCE_BDADDR, &src,
BT_IO_OPT_DEST_BDADDR, &dst,
BT_IO_OPT_INVALID);
if (err) {
error("%s", err->message);
g_error_free(err);
goto reject;
}
if (derr) {
error("Access denied: %s", derr->message);
goto reject;
}
if (!input_device_exists(&src, &dst) && !dev_is_sixaxis(&src, &dst))
return;
if (!bt_io_accept(server->confirm, connect_event_cb, server,
NULL, &err)) {
error("bt_io_accept: %s", err->message);
g_error_free(err);
goto reject;
}
g_io_channel_unref(server->confirm);
server->confirm = NULL;
return;
reject:
g_io_channel_shutdown(server->confirm, TRUE, NULL);
g_io_channel_unref(server->confirm);
server->confirm = NULL;
input_device_close_channels(&src, &dst);
}
static void confirm_event_cb(GIOChannel *chan, gpointer user_data)
{
struct input_server *server = user_data;
bdaddr_t src, dst;
GError *err = NULL;
char addr[18];
guint ret;
DBG("");
bt_io_get(chan, &err,
BT_IO_OPT_SOURCE_BDADDR, &src,
BT_IO_OPT_DEST_BDADDR, &dst,
BT_IO_OPT_INVALID);
if (err) {
error("%s", err->message);
g_error_free(err);
goto drop;
}
ba2str(&dst, addr);
if (server->confirm) {
error("Refusing connection from %s: setup in progress", addr);
goto drop;
}
if (!input_device_exists(&src, &dst) && !dev_is_sixaxis(&src, &dst)) {
error("Refusing connection from %s: unknown device", addr);
goto drop;
}
server->confirm = g_io_channel_ref(chan);
ret = btd_request_authorization(&src, &dst, HID_UUID,
auth_callback, server);
if (ret != 0)
return;
error("input: authorization for device %s failed", addr);
g_io_channel_unref(server->confirm);
server->confirm = NULL;
drop:
input_device_close_channels(&src, &dst);
g_io_channel_shutdown(chan, TRUE, NULL);
}
int server_start(const bdaddr_t *src)
{
struct input_server *server;
GError *err = NULL;
server = g_new0(struct input_server, 1);
bacpy(&server->src, src);
server->ctrl = bt_io_listen(connect_event_cb, NULL,
server, NULL, &err,
BT_IO_OPT_SOURCE_BDADDR, src,
BT_IO_OPT_PSM, L2CAP_PSM_HIDP_CTRL,
BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_LOW,
BT_IO_OPT_INVALID);
if (!server->ctrl) {
error("Failed to listen on control channel");
g_error_free(err);
g_free(server);
return -1;
}
server->intr = bt_io_listen(NULL, confirm_event_cb,
server, NULL, &err,
BT_IO_OPT_SOURCE_BDADDR, src,
BT_IO_OPT_PSM, L2CAP_PSM_HIDP_INTR,
BT_IO_OPT_SEC_LEVEL, BT_IO_SEC_LOW,
BT_IO_OPT_INVALID);
if (!server->intr) {
error("Failed to listen on interrupt channel");
g_io_channel_unref(server->ctrl);
g_error_free(err);
g_free(server);
return -1;
}
servers = g_slist_append(servers, server);
return 0;
}
void server_stop(const bdaddr_t *src)
{
struct input_server *server;
GSList *l;
l = g_slist_find_custom(servers, src, server_cmp);
if (!l)
return;
server = l->data;
g_io_channel_shutdown(server->intr, TRUE, NULL);
g_io_channel_unref(server->intr);
g_io_channel_shutdown(server->ctrl, TRUE, NULL);
g_io_channel_unref(server->ctrl);
servers = g_slist_remove(servers, server);
g_free(server);
}