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*
* oFono - Open Source Telephony
*
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
* Copyright (C) 2011 Intel Corporation. All rights reserved.
* Copyright (C) 2011 ProFUSION embedded systems.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 <string.h>
#include <stdio.h>
#include <errno.h>
#include <glib.h>
#include <gdbus.h>
#include "ofono.h"
#include "common.h"
#ifndef DBUS_TYPE_UNIX_FD
#define DBUS_TYPE_UNIX_FD -1
#endif
struct ofono_location_reporting {
DBusMessage *pending;
const struct ofono_location_reporting_driver *driver;
void *driver_data;
struct ofono_atom *atom;
ofono_bool_t enabled;
char *client_owner;
guint disconnect_watch;
};
static const char *location_reporting_type_to_string(
enum ofono_location_reporting_type type)
{
switch (type) {
case OFONO_LOCATION_REPORTING_TYPE_NMEA:
return "nmea";
};
return NULL;
}
static DBusMessage *location_reporting_get_properties(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct ofono_location_reporting *lr = data;
DBusMessage *reply;
DBusMessageIter iter;
DBusMessageIter dict;
const char *type;
dbus_bool_t value;
reply = dbus_message_new_method_return(msg);
if (reply == NULL)
return NULL;
dbus_message_iter_init_append(reply, &iter);
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
OFONO_PROPERTIES_ARRAY_SIGNATURE,
&dict);
value = lr->enabled;
ofono_dbus_dict_append(&dict, "Enabled", DBUS_TYPE_BOOLEAN, &value);
type = location_reporting_type_to_string(lr->driver->type);
ofono_dbus_dict_append(&dict, "Type", DBUS_TYPE_STRING, &type);
dbus_message_iter_close_container(&iter, &dict);
return reply;
}
static void client_remove(struct ofono_location_reporting *lr)
{
DBusConnection *conn = ofono_dbus_get_connection();
if (lr->disconnect_watch) {
g_dbus_remove_watch(conn, lr->disconnect_watch);
lr->disconnect_watch = 0;
}
l_free(lr->client_owner);
}
static void signal_enabled(const struct ofono_location_reporting *lr)
{
DBusConnection *conn = ofono_dbus_get_connection();
const char *path = __ofono_atom_get_path(lr->atom);
dbus_bool_t value = lr->enabled;
ofono_dbus_signal_property_changed(conn, path,
OFONO_LOCATION_REPORTING_INTERFACE,
"Enabled", DBUS_TYPE_BOOLEAN, &value);
}
static void client_exited_disable_cb(const struct ofono_error *error,
void *data)
{
struct ofono_location_reporting *lr = data;
if (error->type != OFONO_ERROR_TYPE_NO_ERROR) {
ofono_error("Disabling location-reporting failed");
return;
}
client_remove(lr);
lr->enabled = FALSE;
signal_enabled(lr);
}
static void client_exited(DBusConnection *conn, void *data)
{
struct ofono_location_reporting *lr = data;
lr->disconnect_watch = 0;
lr->driver->disable(lr, client_exited_disable_cb, lr);
}
static void location_reporting_disable_cb(const struct ofono_error *error,
void *data)
{
struct ofono_location_reporting *lr = data;
DBusMessage *reply;
if (error->type != OFONO_ERROR_TYPE_NO_ERROR) {
ofono_error("Disabling location-reporting failed");
reply = __ofono_error_failed(lr->pending);
__ofono_dbus_pending_reply(&lr->pending, reply);
return;
}
client_remove(lr);
lr->enabled = FALSE;
reply = dbus_message_new_method_return(lr->pending);
__ofono_dbus_pending_reply(&lr->pending, reply);
signal_enabled(lr);
}
static void location_reporting_enable_cb(const struct ofono_error *error,
int fd, void *data)
{
struct ofono_location_reporting *lr = data;
DBusConnection *conn = ofono_dbus_get_connection();
DBusMessage *reply;
if (error->type != OFONO_ERROR_TYPE_NO_ERROR) {
ofono_error("Enabling location-reporting failed");
reply = __ofono_error_failed(lr->pending);
__ofono_dbus_pending_reply(&lr->pending, reply);
return;
}
lr->enabled = TRUE;
lr->client_owner = l_strdup(dbus_message_get_sender(lr->pending));
lr->disconnect_watch = g_dbus_add_disconnect_watch(conn,
lr->client_owner, client_exited, lr, NULL);
reply = dbus_message_new_method_return(lr->pending);
dbus_message_append_args(reply, DBUS_TYPE_UNIX_FD, &fd,
DBUS_TYPE_INVALID);
__ofono_dbus_pending_reply(&lr->pending, reply);
signal_enabled(lr);
}
static DBusMessage *location_reporting_request(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct ofono_location_reporting *lr = data;
if (lr->pending != NULL)
return __ofono_error_busy(msg);
if (lr->enabled)
return __ofono_error_in_use(msg);
lr->pending = dbus_message_ref(msg);
lr->driver->enable(lr, location_reporting_enable_cb, lr);
return NULL;
}
static DBusMessage *location_reporting_release(DBusConnection *conn,
DBusMessage *msg, void *data)
{
struct ofono_location_reporting *lr = data;
const char *caller = dbus_message_get_sender(msg);
/*
* Avoid a race by not trying to release the device if there is a
* pending message or client already signaled it's exiting. In the
* later case, the device will eventually be released in
* client_exited_disable_cb().
*/
if (lr->pending != NULL || (lr->enabled && !lr->disconnect_watch))
return __ofono_error_busy(msg);
if (lr->enabled == FALSE)
return __ofono_error_not_available(msg);
if (g_strcmp0(caller, lr->client_owner))
return __ofono_error_access_denied(msg);
lr->pending = dbus_message_ref(msg);
lr->driver->disable(lr, location_reporting_disable_cb, lr);
return NULL;
}
static const GDBusMethodTable location_reporting_methods[] = {
{ GDBUS_METHOD("GetProperties",
NULL, GDBUS_ARGS({ "properties", "a{sv}" }),
location_reporting_get_properties) },
{ GDBUS_ASYNC_METHOD("Request",
NULL, GDBUS_ARGS({ "fd", "h" }),
location_reporting_request) },
{ GDBUS_ASYNC_METHOD("Release", NULL, NULL,
location_reporting_release) },
{ }
};
static const GDBusSignalTable location_reporting_signals[] = {
{ GDBUS_SIGNAL("PropertyChanged",
GDBUS_ARGS({ "name", "s" }, { "value", "v" })) },
{ }
};
struct ofono_modem *ofono_location_reporting_get_modem(
struct ofono_location_reporting *lr)
{
return __ofono_atom_get_modem(lr->atom);
}
static void location_reporting_unregister(struct ofono_atom *atom)
{
struct ofono_location_reporting *lr = __ofono_atom_get_data(atom);
const char *path = __ofono_atom_get_path(lr->atom);
DBusConnection *conn = ofono_dbus_get_connection();
struct ofono_modem *modem = __ofono_atom_get_modem(lr->atom);
ofono_modem_remove_interface(modem, OFONO_LOCATION_REPORTING_INTERFACE);
g_dbus_unregister_interface(conn, path,
OFONO_LOCATION_REPORTING_INTERFACE);
}
static void location_reporting_remove(struct ofono_atom *atom)
{
struct ofono_location_reporting *lr = __ofono_atom_get_data(atom);
DBG("atom: %p", atom);
if (lr == NULL)
return;
if (lr->driver && lr->driver->remove)
lr->driver->remove(lr);
g_free(lr);
}
OFONO_DEFINE_ATOM_CREATE(location_reporting,
OFONO_ATOM_TYPE_LOCATION_REPORTING)
void ofono_location_reporting_register(struct ofono_location_reporting *lr)
{
DBusConnection *conn = ofono_dbus_get_connection();
struct ofono_modem *modem = __ofono_atom_get_modem(lr->atom);
const char *path = __ofono_atom_get_path(lr->atom);
if (!g_dbus_register_interface(conn, path,
OFONO_LOCATION_REPORTING_INTERFACE,
location_reporting_methods,
location_reporting_signals,
NULL, lr, NULL)) {
ofono_error("Could not create %s interface",
OFONO_LOCATION_REPORTING_INTERFACE);
return;
}
ofono_modem_add_interface(modem, OFONO_LOCATION_REPORTING_INTERFACE);
__ofono_atom_register(lr->atom, location_reporting_unregister);
}
void ofono_location_reporting_remove(struct ofono_location_reporting *lr)
{
__ofono_atom_free(lr->atom);
}
void ofono_location_reporting_set_data(struct ofono_location_reporting *lr,
void *data)
{
lr->driver_data = data;
}
void *ofono_location_reporting_get_data(struct ofono_location_reporting *lr)
{
return lr->driver_data;
}
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