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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2006-2008 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 <errno.h>
#include <ctype.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/rfcomm.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "logging.h"
#include "process.h"
#include "session.h"
static DBusHandlerResult cancel_message(DBusConnection *conn,
DBusMessage *msg, void *data)
{
DBusMessage *reply;
struct session_data *session = data;
reply = dbus_message_new_method_return(msg);
if (!reply)
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
debug("Cancel of session at %s", session->identifier);
dbus_message_append_args(reply, DBUS_TYPE_INVALID);
dbus_connection_send(conn, reply, NULL);
dbus_message_unref(reply);
return DBUS_HANDLER_RESULT_HANDLED;
}
static DBusHandlerResult session_handler(DBusConnection *conn,
DBusMessage *msg, void *data)
{
if (dbus_message_is_method_call(msg, "org.bluez.transfer.Session", "Cancel"))
return cancel_message(conn, msg, data);
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
static DBusObjectPathVTable session_table = {
.message_function = session_handler,
};
struct session_data *session_create(DBusConnection *conn, DBusMessage *msg)
{
struct session_data *session;
session = malloc(sizeof(*session));
if (!session)
return NULL;
memset(session, 0, sizeof(*session));
session->conn = dbus_connection_ref(conn);
session->msg = dbus_message_ref(msg);
return session;
}
void session_destroy(struct session_data *session)
{
if (!session)
return;
if (session->identifier) {
dbus_connection_unregister_object_path(session->conn,
session->identifier);
free(session->identifier);
}
dbus_message_unref(session->msg);
dbus_connection_unref(session->conn);
free(session);
}
static gboolean connect_callback(GIOChannel *chan,
GIOCondition cond, gpointer data)
{
struct session_data *session = data;
int sk;
debug("Connection for session %s established", session->identifier);
sk = g_io_channel_unix_get_fd(session->rfcomm_io);
close(sk);
return FALSE;
}
static int rfcomm_connect(struct session_data *session)
{
struct sockaddr_rc addr;
long arg;
int sk;
sk = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
if (sk < 0)
return -1;
arg = fcntl(sk, F_GETFL);
if (arg < 0) {
close(sk);
return -1;
}
arg |= O_NONBLOCK;
if (fcntl(sk, F_SETFL, arg) < 0) {
close(sk);
return -1;
}
session->rfcomm_io = g_io_channel_unix_new(sk);
if (!session->rfcomm_io) {
close(sk);
return -1;
}
g_io_channel_set_close_on_unref(session->rfcomm_io, TRUE);
memset(&addr, 0, sizeof(addr));
addr.rc_family = AF_BLUETOOTH;
bacpy(&addr.rc_bdaddr, &session->bdaddr);
addr.rc_channel = session->channel;
if (connect(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
if (errno != EAGAIN && errno != EINPROGRESS) {
close(sk);
return -1;
}
}
g_io_add_watch(session->rfcomm_io, G_IO_OUT, connect_callback, session);
return 0;
}
static gboolean data_event(GIOChannel *chan, GIOCondition cond, gpointer data)
{
unsigned char buf[64];
gsize len;
GIOError err;
int i;
debug("Data event");
if (cond & (G_IO_HUP | G_IO_ERR))
return FALSE;
memset(buf, 0, sizeof(buf));
err = g_io_channel_read(chan, (gchar *) buf, sizeof(buf) - 1, &len);
if (err == G_IO_ERROR_AGAIN)
return TRUE;
for (i = 0; i < len; i++)
if (!isprint(buf[i]))
buf[i] = '.';
debug("%s", buf);
return TRUE;
}
const char *session_connect(struct session_data *session,
const char *address, const char *pathname)
{
const char *sender;
char path[128];
sender = dbus_message_get_sender(session->msg);
session->uid = dbus_bus_get_unix_user(session->conn, sender, NULL);
debug("Request by user %d", session->uid);
create_reader(session->uid, pathname, data_event, NULL);
str2ba(address, &session->bdaddr);
session->channel = 1;
snprintf(path, sizeof(path), "/org/bluez/transfer/%d%d",
session->uid, rand());
session->identifier = strdup(path);
if (!session->identifier)
return NULL;
if (dbus_connection_register_object_path(session->conn, path,
&session_table, session) == FALSE) {
free(session->identifier);
session->identifier = NULL;
return NULL;
}
if (rfcomm_connect(session) < 0)
return NULL;
return session->identifier;
}
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