ladybird/Userland/Utilities/beep.cpp
Liav A 55ea2d892c Utilities/beep: Restrict possible capabilities
We can now just unveil the /dev/beep device node, as well as to restrict
the utility functionality for rpath, wpath & stdio related syscalls only
because we don't actually need anything else.
2023-11-03 15:19:33 +01:00

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C++

/*
* Copyright (c) 2020-2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCore/ArgsParser.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath wpath"));
TRY(Core::System::unveil("/dev/beep", "rw"));
TRY(Core::System::unveil(nullptr, nullptr));
Optional<size_t> tone;
Optional<size_t> milliseconds_duration;
Core::ArgsParser args_parser;
args_parser.add_option(tone, "Beep tone", "beep-tone", 'f', "Beep tone (frequency in Hz)");
args_parser.add_option(milliseconds_duration, "Duration", "duration", 'n', "Duration (in milliseconds)");
args_parser.parse(arguments);
TRY(Core::System::beep(tone.value_or(440), milliseconds_duration.value_or(200)));
return 0;
}