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72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, Undefine <undefine@undefine.pl>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCore/Account.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/GetPassword.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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#include <unistd.h>
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ErrorOr<int> serenity_main(Main::Arguments arguments)
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{
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TRY(Core::System::pledge("stdio rpath tty exec id"));
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StringView first_positional;
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StringView second_positional;
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DeprecatedString command;
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bool simulate_login = false;
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Core::ArgsParser args_parser;
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args_parser.add_positional_argument(first_positional, "See --login", "-", Core::ArgsParser::Required::No);
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args_parser.add_positional_argument(second_positional, "User to switch to (defaults to user with UID 0)", "user", Core::ArgsParser::Required::No);
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args_parser.add_option(command, "Command to execute", "command", 'c', "command");
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args_parser.add_option(simulate_login, "Simulate login", "login", 'l');
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args_parser.parse(arguments);
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StringView user = first_positional;
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if (first_positional == '-') {
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simulate_login = true;
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user = second_positional;
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}
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if (geteuid() != 0)
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return Error::from_string_literal("Not running as root :(");
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auto account = TRY(user.is_empty() ? Core::Account::from_uid(0) : Core::Account::from_name(user));
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TRY(Core::System::pledge("stdio rpath tty exec id"));
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if (getuid() != 0 && account.has_password()) {
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if (!TRY(Core::System::isatty(STDIN_FILENO)))
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return Error::from_string_literal("Standard input is not a terminal");
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auto password = TRY(Core::get_password());
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if (!account.authenticate(password))
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return Error::from_string_literal("Incorrect or disabled password.");
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}
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TRY(Core::System::pledge("stdio rpath exec id"));
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TRY(account.login());
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if (simulate_login)
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TRY(Core::System::chdir(account.home_directory()));
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TRY(Core::System::pledge("stdio exec"));
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TRY(Core::System::setenv("HOME"sv, account.home_directory(), true));
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if (command.is_null()) {
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TRY(Core::System::exec(account.shell(), Array<StringView, 1> { account.shell().view() }, Core::System::SearchInPath::No));
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} else {
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TRY(Core::System::exec(account.shell(), Array<StringView, 3> { account.shell().view(), "-c"sv, command.view() }, Core::System::SearchInPath::No));
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}
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return 1;
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}
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