mirror of
https://github.com/RGBCube/serenity
synced 2025-05-31 05:48:12 +00:00
26a31c7efb
This patch adds a new "accept" promise that allows you to call accept() on an already listening socket. This lets programs set up a socket for for listening and then dropping "inet" and/or "unix" so that only incoming (and existing) connections are allowed from that point on. No new outgoing connections or listening server sockets can be created. In addition to accept() it also allows getsockopt() with SOL_SOCKET and SO_PEERCRED, which is used to find the PID/UID/GID of the socket peer. This is used by our IPC library when creating shared buffers that should only be accessible to a specific peer process. This allows us to drop "unix" in WindowServer and LookupServer. :^) It also makes the debugging/introspection RPC sockets in CEventLoop based programs work again.
89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
#include <LibCore/CTimer.h>
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#include <LibDraw/Palette.h>
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#include <LibGUI/GApplication.h>
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#include <LibGUI/GPainter.h>
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#include <LibGUI/GWidget.h>
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#include <LibGUI/GWindow.h>
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#include <stdio.h>
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#include <time.h>
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class ClockWidget final : public GWidget {
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C_OBJECT(ClockWidget)
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public:
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ClockWidget()
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: GWidget(nullptr)
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{
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m_time_width = Font::default_bold_font().width("2222-22-22 22:22:22");
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m_timer = CTimer::construct(1000, [this] {
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static time_t last_update_time;
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time_t now = time(nullptr);
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if (now != last_update_time) {
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tick_clock();
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last_update_time = now;
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}
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});
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}
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virtual ~ClockWidget() override {}
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int get_width()
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{
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return m_time_width + menubar_menu_margin();
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}
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private:
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static int menubar_menu_margin() { return 2; }
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virtual void paint_event(GPaintEvent& event) override
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{
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time_t now = time(nullptr);
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auto* tm = localtime(&now);
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auto time_text = String::format("%4u-%02u-%02u %02u:%02u:%02u",
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tm->tm_year + 1900,
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tm->tm_mon + 1,
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tm->tm_mday,
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tm->tm_hour,
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tm->tm_min,
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tm->tm_sec);
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GPainter painter(*this);
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painter.fill_rect(event.rect(), palette().window());
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painter.draw_text(event.rect(), time_text, Font::default_font(), TextAlignment::Center, palette().window_text());
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}
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void tick_clock()
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{
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update();
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}
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RefPtr<CTimer> m_timer;
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int m_time_width;
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};
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int main(int argc, char** argv)
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{
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if (pledge("stdio shared_buffer accept rpath unix cpath fattr", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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GApplication app(argc, argv);
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if (pledge("stdio shared_buffer accept rpath", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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auto window = GWindow::construct();
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window->set_window_type(GWindowType::MenuApplet);
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auto widget = ClockWidget::construct();
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window->resize(widget->get_width(), 16);
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window->set_main_widget(widget);
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window->show();
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return app.exec();
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}
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