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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/String.h>
#include <AK/Vector.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;
}
if (argc < 3) {
warnln("usage: chown <uid[:gid]> <path>");
return 1;
}
uid_t new_uid = -1;
gid_t new_gid = -1;
auto parts = String(argv[1]).split(':', true);
if (parts.is_empty()) {
warnln("Empty uid/gid spec");
return 1;
}
if (parts[0].is_empty() || (parts.size() == 2 && parts[1].is_empty()) || parts.size() > 2) {
warnln("Invalid uid/gid spec");
return 1;
}
auto number = parts[0].to_uint();
if (number.has_value()) {
new_uid = number.value();
} else {
auto* passwd = getpwnam(parts[0].characters());
if (!passwd) {
warnln("Unknown user '{}'", parts[0]);
return 1;
}
new_uid = passwd->pw_uid;
}
if (parts.size() == 2) {
auto number = parts[1].to_uint();
if (number.has_value()) {
new_gid = number.value();
} else {
auto* group = getgrnam(parts[1].characters());
if (!group) {
warnln("Unknown group '{}'", parts[1]);
return 1;
}
new_gid = group->gr_gid;
}
}
int rc = chown(argv[2], new_uid, new_gid);
if (rc < 0) {
perror("chown");
return 1;
}
return 0;
}
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