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79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <AK/Optional.h>
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#include <AK/String.h>
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#include <LibCore/ArgsParser.h>
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#include <grp.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <unistd.h>
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int main(int argc, char** argv)
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{
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if (pledge("stdio rpath chown", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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const char* gid_arg = nullptr;
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const char* path = nullptr;
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Core::ArgsParser args_parser;
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args_parser.set_general_help("Change the owning group for a file or directory.");
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args_parser.add_positional_argument(gid_arg, "Group ID", "gid");
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args_parser.add_positional_argument(path, "Path to file", "path");
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args_parser.parse(argc, argv);
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gid_t new_gid = -1;
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if (String(gid_arg).is_empty()) {
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fprintf(stderr, "Empty gid option\n");
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return 1;
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}
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auto number = String(gid_arg).to_uint();
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if (number.has_value()) {
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new_gid = number.value();
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} else {
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auto* group = getgrnam(gid_arg);
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if (!group) {
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fprintf(stderr, "Unknown group '%s'\n", gid_arg);
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return 1;
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}
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new_gid = group->gr_gid;
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}
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int rc = chown(path, -1, new_gid);
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if (rc < 0) {
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perror("chgrp");
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return 1;
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}
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return 0;
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}
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