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Utilities/w: Add the ability to filter by username

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Tim Ledbetter 2023-05-23 22:10:20 +01:00 • committed by Andreas Kling
parent d2ec82d4f9
commit 9596346528
1 changed files with 11 additions and 1 deletions
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12
Userland/Utilities/w.cpp
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@ -10,6 +10,7 @@
#include <AK/String.h>
#include <AK/Time.h>
#include <LibCore/Account.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/DateTime.h>
#include <LibCore/File.h>
#include <LibCore/ProcessStatisticsReader.h>
@ -33,7 +34,7 @@ static ErrorOr<String> tty_stat_to_pseudo_name(struct stat const& tty_stat)
return Error::from_string_literal("Unknown TTY device type");
}
ErrorOr<int> serenity_main(Main::Arguments)
ErrorOr<int> serenity_main(Main::Arguments args)
{
TRY(Core::System::pledge("stdio rpath"));
TRY(Core::System::unveil("/dev", "r"));
@ -44,6 +45,12 @@ ErrorOr<int> serenity_main(Main::Arguments)
TRY(Core::System::unveil("/sys/kernel/processes", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
StringView username_to_filter_by;
Core::ArgsParser args_parser;
args_parser.add_positional_argument(username_to_filter_by, "Only show information about the specified user", "user", Core::ArgsParser::Required::No);
args_parser.parse(args);
auto file = TRY(Core::File::open("/var/run/utmp"sv, Core::File::OpenMode::Read));
auto file_contents = TRY(file->read_until_eof());
auto json = TRY(JsonValue::from_string(file_contents));
@ -72,6 +79,9 @@ ErrorOr<int> serenity_main(Main::Arguments)
else
username = TRY(String::formatted("{}", uid));
if (!username_to_filter_by.is_empty() && username_to_filter_by != username)
return {};
StringBuilder builder;
String idle_string = "n/a"_short_string;
String what = "n/a"_short_string;