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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Optional.h>
#include <AK/String.h>
#include <LibCore/ArgsParser.h>
#include <grp.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
int main(int argc, char** argv)
{
if (pledge("stdio rpath chown", nullptr) < 0) {
perror("pledge");
return 1;
}
const char* gid_arg = nullptr;
const char* path = nullptr;
Core::ArgsParser args_parser;
args_parser.set_general_help("Change the owning group for a file or directory.");
args_parser.add_positional_argument(gid_arg, "Group ID", "gid");
args_parser.add_positional_argument(path, "Path to file", "path");
args_parser.parse(argc, argv);
gid_t new_gid = -1;
if (String(gid_arg).is_empty()) {
fprintf(stderr, "Empty gid option\n");
return 1;
}
auto number = String(gid_arg).to_uint();
if (number.has_value()) {
new_gid = number.value();
} else {
auto* group = getgrnam(gid_arg);
if (!group) {
fprintf(stderr, "Unknown group '%s'\n", gid_arg);
return 1;
}
new_gid = group->gr_gid;
}
int rc = chown(path, -1, new_gid);
if (rc < 0) {
perror("chgrp");
return 1;
}
return 0;
}
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