Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
branch: jb
Fetching contributors…

Cannot retrieve contributors at this time

241 lines (198 sloc) 5.466 kB
/*
*
* 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 <errno.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/sdp.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "log.h"
#include "glib-helper.h"
#include "btio.h"
#include "adapter.h"
#include "device.h"
#include "server.h"
static GSList *servers = NULL;
struct input_server {
bdaddr_t src;
GIOChannel *ctrl;
GIOChannel *intr;
GIOChannel *confirm;
};
static gint server_cmp(gconstpointer s, gconstpointer user_data)
{
const struct input_server *server = s;
const bdaddr_t *src = user_data;
return bacmp(&server->src, src);
}
static void connect_event_cb(GIOChannel *chan, GError *err, gpointer data)
{
uint16_t psm;
bdaddr_t src, dst;
GError *gerr = NULL;
int ret;
if (err) {
error("%s", err->message);
return;
}
bt_io_get(chan, BT_IO_L2CAP, &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;
}
DBG("Incoming connection on PSM %d", psm);
ret = input_device_set_channel(&src, &dst, psm, chan);
if (ret == 0)
return;
/* 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, BT_IO_L2CAP, &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 (!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;
int ret;
bt_io_get(chan, BT_IO_L2CAP, &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;
}
if (server->confirm) {
error("Refusing connection: setup in progress");
goto drop;
}
server->confirm = g_io_channel_ref(chan);
ret = btd_request_authorization(&src, &dst, HID_UUID,
auth_callback, server);
if (ret == 0)
return;
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(BT_IO_L2CAP, 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_POWER_ACTIVE, 0,
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(BT_IO_L2CAP, 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_POWER_ACTIVE, 0,
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);
}
Jump to Line
Something went wrong with that request. Please try again.