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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/ArgsParser.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
int main(int argc, char** argv)
{
const char* hostname = nullptr;
Core::ArgsParser args_parser;
args_parser.add_positional_argument(hostname, "Hostname to set", "hostname", Core::ArgsParser::Required::No);
args_parser.parse(argc, argv);
if (!hostname) {
char buffer[HOST_NAME_MAX];
int rc = gethostname(buffer, sizeof(buffer));
if (rc < 0) {
perror("gethostname");
return 1;
}
outln("{}", buffer);
} else {
if (strlen(hostname) >= HOST_NAME_MAX) {
warnln("Hostname must be less than {} characters", HOST_NAME_MAX);
return 1;
}
int rc = sethostname(hostname, strlen(hostname));
if (rc < 0) {
perror("sethostname");
return 1;
}
}
return 0;
}
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