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/*
* This file is part of activationd.
*
* Copyright © 2019 Samsung Electronics
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <systemd/sd-bus.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <errno.h>
#include "common.h"
#include "systemd_dbus.h"
#include "log.h"
static sd_bus *systemd_bus = NULL;
static bool epc_systemd_private = false;
int epc_dbus_call(char *service, char *obj, char *interface, char *method,
sd_bus_error *error, sd_bus_message **out_msg,
char *types, ...)
{
_cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
_cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error_buf = SD_BUS_ERROR_NULL;
int ret;
if (!error)
error = &error_buf;
ret = epc_acquire_systemd_bus(&bus);
if (ret < 0)
return ret;
ret = sd_bus_message_new_method_call(bus, &m, service,
obj, interface, method);
if (ret < 0)
goto fail;
if (types) {
va_list args;
va_start(args, types);
ret = sd_bus_message_appendv(m, types, args);
va_end(args);
if (ret < 0)
goto fail;
}
return sd_bus_call(bus, m, 0, error, out_msg);
fail:
return sd_bus_error_set_errno(error, ret);
}
static int get_bus_by_address(const char *addr, sd_bus **bus)
{
_cleanup_(sd_bus_unrefp) sd_bus *rbus = NULL;
int ret;
ret = sd_bus_new(&rbus);
if (ret < 0)
return ret;
ret = sd_bus_set_address(rbus, addr);
if (ret < 0)
return ret;
ret = sd_bus_start(rbus);
if (ret < 0)
return ret;
*bus = rbus;
rbus = NULL;
return 0;
}
int epc_acquire_systemd_bus(sd_bus **bus)
{
int ret;
if (systemd_bus) {
*bus = systemd_bus;
sd_bus_ref(systemd_bus);
return 0;
}
if (!epc_systemd_private) {
ret = sd_bus_open_system(bus);
if (ret < 0)
return ret;
} else {
ret = get_bus_by_address(SYSTEMD_KERNEL_BUS, bus);
if (ret < 0) {
ret = get_bus_by_address(SYSTEMD_PRIVATE_BUS, bus);
if (ret < 0)
return ret;
}
}
systemd_bus = *bus;
return 0;
}
void epc_set_systemd_private(bool priv)
{
epc_systemd_private = priv;
}
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