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groupadd: Add -U option for adding members to a new group

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Tim Ledbetter 2023-06-19 07:09:55 +01:00 committed by Andreas Kling
parent 464e428e94
commit 09787dbf27
2 changed files with 35 additions and 1 deletions
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1
Base/usr/share/man/man8/groupadd.md
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@ -17,6 +17,7 @@ This program must be run as root.
## Options
* `-g`, `--gid` _gid_: The group identifier for the new group. If not specified, an unused GID above `100` will be auto-generated.
* `-U`, `--users` user-list: A comma-separated list of usernames to add as members of the new group
## Exit Values

35
Userland/Utilities/groupadd.cpp
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@ -3,10 +3,13 @@
* Copyright (c) 2021, Brandon Pruitt <brapru@pm.me>
* Copyright (c) 2021, Maxime Friess <M4x1me@pm.me>
* Copyright (c) 2022, Kenneth Myhra <kennethmyhra@serenityos.org>
* Copyright (c) 2023, Tim Ledbetter <timledbetter@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/HashTable.h>
#include <LibCore/Account.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/Group.h>
#include <LibCore/System.h>
@ -18,13 +21,43 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
gid_t gid = 0;
StringView group_name;
Vector<DeprecatedString> group_members;
Core::ArgsParser args_parser;
args_parser.add_option(gid, "Group ID (gid) for the new group", "gid", 'g', "gid");
args_parser.add_option(Core::ArgsParser::Option {
.argument_mode = Core::ArgsParser::OptionArgumentMode::Required,
.help_string = "A comma-separated list of usernames to add as members of the new group",
.long_name = "users",
.short_name = 'U',
.value_name = "user-list",
.accept_value = [&group_members](StringView comma_separated_users) {
auto accounts_or_error = Core::Account::all(Core::Account::Read::PasswdOnly);
if (accounts_or_error.is_error())
return false;
OrderedHashTable<DeprecatedString> unique_group_members;
auto accounts = accounts_or_error.release_value();
for (auto const& username : comma_separated_users.split_view(',')) {
auto matching_account = accounts.first_matching([&](auto const& account) { return username == account.username(); });
if (!matching_account.has_value()) {
warnln("Invalid member username: '{}'", username);
return false;
}
unique_group_members.set(matching_account->username());
}
for (auto const& member : unique_group_members)
group_members.append(member);
return true;
},
});
args_parser.add_positional_argument(group_name, "Name of the group (groupname)", "group");
args_parser.parse(arguments);
auto group = Core::Group { group_name, gid };
Core::Group group { group_name, gid, group_members };
TRY(Core::Group::add_group(group));
return 0;