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60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Vector.h>
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#include <LibCore/Account.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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#include <grp.h>
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#include <unistd.h>
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static void print_account_gids(Core::Account const& account)
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{
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auto* gr = getgrgid(account.gid());
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if (!gr) {
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outln();
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return;
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}
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out("{}", gr->gr_name);
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for (auto& gid : account.extra_gids()) {
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gr = getgrgid(gid);
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out(" {}", gr->gr_name);
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}
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outln();
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}
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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TRY(Core::System::unveil("/etc/passwd", "r"));
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TRY(Core::System::unveil("/etc/group", "r"));
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TRY(Core::System::unveil(nullptr, nullptr));
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TRY(Core::System::pledge("stdio rpath"));
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Vector<String> usernames;
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Core::ArgsParser args_parser;
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args_parser.set_general_help("Print group memberships for each username or, if no username is specified, for the current process.");
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args_parser.add_positional_argument(usernames, "Usernames to list group memberships for", "usernames", Core::ArgsParser::Required::No);
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args_parser.parse(arguments);
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if (usernames.is_empty()) {
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auto account = TRY(Core::Account::from_uid(geteuid(), Core::Account::Read::PasswdOnly));
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print_account_gids(account);
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}
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for (auto username : usernames) {
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auto result = Core::Account::from_name(username.characters(), Core::Account::Read::PasswdOnly);
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if (result.is_error()) {
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warnln("{} '{}'", result.error(), username);
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continue;
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}
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out("{} : ", username);
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print_account_gids(result.value());
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}
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return 0;
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}
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