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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <unistd.h>
#include "macro.h"
#include "varlink-io.systemd.service.h"
static SD_VARLINK_DEFINE_METHOD(Ping);
static SD_VARLINK_DEFINE_METHOD(Reload);
static SD_VARLINK_DEFINE_METHOD(
SetLogLevel,
SD_VARLINK_DEFINE_INPUT(level, SD_VARLINK_INT, 0));
SD_VARLINK_DEFINE_INTERFACE(
io_systemd_service,
"io.systemd.service",
&vl_method_Ping,
&vl_method_Reload,
&vl_method_SetLogLevel);
int varlink_method_ping(sd_varlink *link, sd_json_variant *parameters, sd_varlink_method_flags_t flags, void *userdata) {
assert(link);
if (sd_json_variant_elements(parameters) > 0)
return sd_varlink_error_invalid_parameter(link, parameters);
log_debug("Received io.systemd.service.Ping");
return sd_varlink_reply(link, NULL);
}
int varlink_method_set_log_level(sd_varlink *link, sd_json_variant *parameters, sd_varlink_method_flags_t flags, void *userdata) {
static const sd_json_dispatch_field dispatch_table[] = {
{ "level", _SD_JSON_VARIANT_TYPE_INVALID, sd_json_dispatch_int64, 0, SD_JSON_MANDATORY },
{}
};
int64_t level;
uid_t uid;
int r;
assert(link);
assert(parameters);
/* NOTE: The method does have 1 parameter, but we must compare to 2 here, because
* sd_json_variant_elements() breaks abstraction and exposes internal structure of JsonObject. */
if (sd_json_variant_elements(parameters) != 2)
return sd_varlink_error_invalid_parameter(link, parameters);
r = sd_varlink_dispatch(link, parameters, dispatch_table, &level);
if (r != 0)
return r;
if (LOG_PRI(level) != level)
return sd_varlink_error_invalid_parameter(link, parameters);
r = sd_varlink_get_peer_uid(link, &uid);
if (r < 0)
return r;
if (uid != getuid() && uid != 0)
return sd_varlink_error(link, SD_VARLINK_ERROR_PERMISSION_DENIED, parameters);
log_debug("Received io.systemd.service.SetLogLevel(%" PRIi64 ")", level);
log_set_max_level(level);
return sd_varlink_reply(link, NULL);
}
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