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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2009 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 <bluetooth/bluetooth.h>
#include <bluetooth/sdp.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "logging.h"
#include "glib-helper.h"
#include "btio.h"
#include "adapter.h"
#include "device.h"
#include "server.h"
static GSList *servers = NULL;
struct server {
bdaddr_t src;
GIOChannel *ctrl;
GIOChannel *intr;
};
struct authorization_data {
bdaddr_t src;
bdaddr_t dst;
};
static gint server_cmp(gconstpointer s, gconstpointer user_data)
{
const struct server *server = s;
const bdaddr_t *src = user_data;
return bacmp(&server->src, src);
}
static void auth_callback(DBusError *derr, void *user_data)
{
struct authorization_data *auth = user_data;
if (derr) {
error("Access denied: %s", derr->message);
input_device_close_channels(&auth->src, &auth->dst);
} else
input_device_connadd(&auth->src, &auth->dst);
g_free(auth);
}
static int authorize_device(const bdaddr_t *src, const bdaddr_t *dst)
{
struct authorization_data *auth;
auth = g_new0(struct authorization_data, 1);
bacpy(&auth->src, src);
bacpy(&auth->dst, dst);
return btd_request_authorization(src, dst, HID_UUID,
auth_callback, auth);
}
static void connect_event_cb(GIOChannel *chan, GError *err, gpointer data)
{
int sk, psm;
bdaddr_t src, dst;
GError *gerr = NULL;
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,
NULL);
if (gerr) {
error("%s", gerr->message);
g_error_free(gerr);
g_io_channel_close(chan);
return;
}
debug("Incoming connection on PSM %d", psm);
sk = g_io_channel_unix_get_fd(chan);
if (input_device_set_channel(&src, &dst, psm, sk) < 0) {
/* Send unplug virtual cable to unknown devices */
if (psm == L2CAP_PSM_HIDP_CTRL) {
unsigned char unplug[] = { 0x15 };
int err;
err = write(sk, unplug, sizeof(unplug));
}
g_io_channel_close(chan);
return;
}
if ((psm == L2CAP_PSM_HIDP_INTR) && (authorize_device(&src, &dst) < 0))
input_device_close_channels(&src, &dst);
}
int server_start(const bdaddr_t *src)
{
struct server *server;
GIOChannel *ctrl_io, *intr_io;
GError *err = NULL;
ctrl_io = bt_io_listen(BT_IO_L2CAP, connect_event_cb, NULL,
NULL, NULL, &err,
BT_IO_OPT_SOURCE_BDADDR, src,
BT_IO_OPT_PSM, L2CAP_PSM_HIDP_CTRL,
BT_IO_OPT_INVALID);
if (!ctrl_io) {
error("Failed to listen on control channel");
g_clear_error(&err);
return -1;
}
intr_io = bt_io_listen(BT_IO_L2CAP, connect_event_cb, NULL,
NULL, NULL, &err,
BT_IO_OPT_SOURCE_BDADDR, src,
BT_IO_OPT_PSM, L2CAP_PSM_HIDP_INTR,
BT_IO_OPT_INVALID);
if (!intr_io) {
error("Failed to listen on interrupt channel");
g_io_channel_unref(ctrl_io);
g_clear_error(&err);
return -1;
}
server = g_new0(struct server, 1);
bacpy(&server->src, src);
server->ctrl = ctrl_io;
server->intr = intr_io;
servers = g_slist_append(servers, server);
return 0;
}
void server_stop(const bdaddr_t *src)
{
struct server *server;
GSList *l;
l = g_slist_find_custom(servers, src, server_cmp);
if (!l)
return;
server = l->data;
g_io_channel_close(server->intr);
g_io_channel_unref(server->intr);
g_io_channel_close(server->ctrl);
g_io_channel_unref(server->ctrl);
servers = g_slist_remove(servers, server);
g_free(server);
}
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