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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <gdk/gdk.h>
#include "nsAppShell.h"
#include "nsWindow.h"
#include "mozilla/Logging.h"
#include "prenv.h"
#include "mozilla/BackgroundHangMonitor.h"
#include "mozilla/Hal.h"
#include "mozilla/Unused.h"
#include "mozilla/WidgetUtils.h"
#include "GeckoProfiler.h"
#include "nsIPowerManagerService.h"
#ifdef MOZ_ENABLE_DBUS
# include <dbus/dbus-glib-lowlevel.h>
# include <gio/gio.h>
# include "WakeLockListener.h"
# include "nsIObserverService.h"
#endif
#include "gfxPlatform.h"
#include "ScreenHelperGTK.h"
#include "HeadlessScreenHelper.h"
#include "mozilla/widget/ScreenManager.h"
#ifdef MOZ_WAYLAND
# include "nsWaylandDisplay.h"
#endif
using mozilla::LazyLogModule;
using mozilla::Unused;
using mozilla::widget::HeadlessScreenHelper;
using mozilla::widget::ScreenHelperGTK;
using mozilla::widget::ScreenManager;
#define NOTIFY_TOKEN 0xFA
LazyLogModule gWidgetLog("Widget");
LazyLogModule gWidgetDragLog("WidgetDrag");
LazyLogModule gWidgetWaylandLog("WidgetWayland");
LazyLogModule gWidgetPopupLog("WidgetPopup");
LazyLogModule gDmabufLog("Dmabuf");
LazyLogModule gClipboardLog("WidgetClipboard");
static GPollFunc sPollFunc;
// Wrapper function to disable hang monitoring while waiting in poll().
static gint PollWrapper(GPollFD* ufds, guint nfsd, gint timeout_) {
mozilla::BackgroundHangMonitor().NotifyWait();
gint result;
{
AUTO_PROFILER_LABEL("PollWrapper", IDLE);
AUTO_PROFILER_THREAD_SLEEP;
result = (*sPollFunc)(ufds, nfsd, timeout_);
}
mozilla::BackgroundHangMonitor().NotifyActivity();
return result;
}
// Emit resume-events on GdkFrameClock if flush-events has not been
// balanced by resume-events at dispose.
static decltype(GObjectClass::constructed) sRealGdkFrameClockConstructed;
static decltype(GObjectClass::dispose) sRealGdkFrameClockDispose;
static GQuark sPendingResumeQuark;
static void OnFlushEvents(GObject* clock, gpointer) {
g_object_set_qdata(clock, sPendingResumeQuark, GUINT_TO_POINTER(1));
}
static void OnResumeEvents(GObject* clock, gpointer) {
g_object_set_qdata(clock, sPendingResumeQuark, nullptr);
}
static void WrapGdkFrameClockConstructed(GObject* object) {
sRealGdkFrameClockConstructed(object);
g_signal_connect(object, "flush-events", G_CALLBACK(OnFlushEvents), nullptr);
g_signal_connect(object, "resume-events", G_CALLBACK(OnResumeEvents),
nullptr);
}
static void WrapGdkFrameClockDispose(GObject* object) {
if (g_object_get_qdata(object, sPendingResumeQuark)) {
g_signal_emit_by_name(object, "resume-events");
}
sRealGdkFrameClockDispose(object);
}
/*static*/
gboolean nsAppShell::EventProcessorCallback(GIOChannel* source,
GIOCondition condition,
gpointer data) {
nsAppShell* self = static_cast<nsAppShell*>(data);
unsigned char c;
Unused << read(self->mPipeFDs[0], &c, 1);
NS_ASSERTION(c == (unsigned char)NOTIFY_TOKEN, "wrong token");
self->NativeEventCallback();
return TRUE;
}
nsAppShell::~nsAppShell() {
#ifdef MOZ_ENABLE_DBUS
StopDBusListening();
#endif
mozilla::hal::Shutdown();
if (mTag) g_source_remove(mTag);
if (mPipeFDs[0]) close(mPipeFDs[0]);
if (mPipeFDs[1]) close(mPipeFDs[1]);
}
#ifdef MOZ_ENABLE_DBUS
static void SessionSleepCallback(DBusGProxy* aProxy, gboolean aSuspend,
gpointer data) {
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (!observerService) {
return;
}
if (aSuspend) {
// Post sleep_notification
observerService->NotifyObservers(nullptr, NS_WIDGET_SLEEP_OBSERVER_TOPIC,
nullptr);
} else {
// Post wake_notification
observerService->NotifyObservers(nullptr, NS_WIDGET_WAKE_OBSERVER_TOPIC,
nullptr);
}
}
static DBusHandlerResult ConnectionSignalFilter(DBusConnection* aConnection,
DBusMessage* aMessage,
void* aData) {
if (dbus_message_is_signal(aMessage, DBUS_INTERFACE_LOCAL, "Disconnected")) {
auto* appShell = static_cast<nsAppShell*>(aData);
appShell->StopDBusListening();
// We do not return DBUS_HANDLER_RESULT_HANDLED here because the connection
// might be shared and some other filters might want to do something.
}
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
// Based on
// Use login1 to signal sleep and wake notifications.
void nsAppShell::StartDBusListening() {
GError* error = nullptr;
mDBusConnection = dbus_g_bus_get(DBUS_BUS_SYSTEM, &error);
if (!mDBusConnection) {
NS_WARNING(nsPrintfCString("gds: Failed to open connection to bus %s\n",
error->message)
.get());
g_error_free(error);
return;
}
DBusConnection* dbusConnection =
dbus_g_connection_get_connection(mDBusConnection);
// Make sure we do not exit the entire program if DBus connection gets
// lost.
dbus_connection_set_exit_on_disconnect(dbusConnection, false);
// Listening to signals the DBus connection is going to get so we will
// know when it is lost and we will be able to disconnect cleanly.
dbus_connection_add_filter(dbusConnection, ConnectionSignalFilter, this,
nullptr);
mLogin1Proxy = dbus_g_proxy_new_for_name(
mDBusConnection, "org.freedesktop.login1", "/org/freedesktop/login1",
"org.freedesktop.login1.Manager");
if (!mLogin1Proxy) {
NS_WARNING("gds: error-no dbus proxy\n");
return;
}
dbus_g_proxy_add_signal(mLogin1Proxy, "PrepareForSleep", G_TYPE_BOOLEAN,
G_TYPE_INVALID);
dbus_g_proxy_connect_signal(mLogin1Proxy, "PrepareForSleep",
G_CALLBACK(SessionSleepCallback), this, nullptr);
}
void nsAppShell::StopDBusListening() {
// If mDBusConnection isn't initialized, that means we are not really
// listening.
if (!mDBusConnection) {
return;
}
dbus_connection_remove_filter(
dbus_g_connection_get_connection(mDBusConnection), ConnectionSignalFilter,
this);
if (mLogin1Proxy) {
dbus_g_proxy_disconnect_signal(mLogin1Proxy, "PrepareForSleep",
G_CALLBACK(SessionSleepCallback), this);
g_object_unref(mLogin1Proxy);
mLogin1Proxy = nullptr;
}
dbus_g_connection_unref(mDBusConnection);
mDBusConnection = nullptr;
}
#endif
nsresult nsAppShell::Init() {
mozilla::hal::Init();
#ifdef MOZ_ENABLE_DBUS
if (XRE_IsParentProcess()) {
nsCOMPtr<nsIPowerManagerService> powerManagerService =
do_GetService(POWERMANAGERSERVICE_CONTRACTID);
if (powerManagerService) {
powerManagerService->AddWakeLockListener(
WakeLockListener::GetSingleton());
} else {
NS_WARNING(
"Failed to retrieve PowerManagerService, wakelocks will be broken!");
}
StartDBusListening();
}
#endif
if (!sPollFunc) {
sPollFunc = g_main_context_get_poll_func(nullptr);
g_main_context_set_poll_func(nullptr, &PollWrapper);
}
if (XRE_IsParentProcess()) {
ScreenManager& screenManager = ScreenManager::GetSingleton();
if (gfxPlatform::IsHeadless()) {
screenManager.SetHelper(mozilla::MakeUnique<HeadlessScreenHelper>());
} else {
screenManager.SetHelper(mozilla::MakeUnique<ScreenHelperGTK>());
}
if (gtk_check_version(3, 16, 3) == nullptr) {
// Before 3.16.3, GDK cannot override classname by --class command line
// option when program uses gdk_set_program_class().
//
//
// Only bother doing this for the parent process, since it's the one
// creating top-level windows. (At this point, a child process hasn't
// received the list of registered chrome packages, so the
// GetBrandShortName call would fail anyway.)
nsAutoString brandName;
mozilla::widget::WidgetUtils::GetBrandShortName(brandName);
if (!brandName.IsEmpty()) {
gdk_set_program_class(NS_ConvertUTF16toUTF8(brandName).get());
}
}
}
if (!sPendingResumeQuark &&
gtk_check_version(3, 14, 7) != nullptr) { // GTK 3.0 to GTK 3.14.7.
// GTK 3.8 - 3.14 registered this type when creating the frame clock
// for the root window of the display when the display was opened.
GType gdkFrameClockIdleType = g_type_from_name("GdkFrameClockIdle");
if (gdkFrameClockIdleType) { // not in versions prior to 3.8
sPendingResumeQuark = g_quark_from_string("moz-resume-is-pending");
auto gdk_frame_clock_idle_class =
G_OBJECT_CLASS(g_type_class_peek_static(gdkFrameClockIdleType));
auto constructed = &gdk_frame_clock_idle_class->constructed;
sRealGdkFrameClockConstructed = *constructed;
*constructed = WrapGdkFrameClockConstructed;
auto dispose = &gdk_frame_clock_idle_class->dispose;
sRealGdkFrameClockDispose = *dispose;
*dispose = WrapGdkFrameClockDispose;
}
}
// Workaround for bug 1209659 which is fixed by Gtk3.20
if (gtk_check_version(3, 20, 0) != nullptr) {
unsetenv("GTK_CSD");
}
if (PR_GetEnv("MOZ_DEBUG_PAINTS")) {
gdk_window_set_debug_updates(TRUE);
}
// Whitelist of only common, stable formats - see bugs 1197059 and 1203078
GSList* pixbufFormats = gdk_pixbuf_get_formats();
for (GSList* iter = pixbufFormats; iter; iter = iter->next) {
GdkPixbufFormat* format = static_cast<GdkPixbufFormat*>(iter->data);
gchar* name = gdk_pixbuf_format_get_name(format);
if (strcmp(name, "jpeg") && strcmp(name, "png") && strcmp(name, "gif") &&
strcmp(name, "bmp") && strcmp(name, "ico") && strcmp(name, "xpm") &&
strcmp(name, "svg")) {
gdk_pixbuf_format_set_disabled(format, TRUE);
}
g_free(name);
}
g_slist_free(pixbufFormats);
int err = pipe(mPipeFDs);
if (err) return NS_ERROR_OUT_OF_MEMORY;
GIOChannel* ioc;
GSource* source;
// make the pipe nonblocking
int flags = fcntl(mPipeFDs[0], F_GETFL, 0);
if (flags == -1) goto failed;
err = fcntl(mPipeFDs[0], F_SETFL, flags | O_NONBLOCK);
if (err == -1) goto failed;
flags = fcntl(mPipeFDs[1], F_GETFL, 0);
if (flags == -1) goto failed;
err = fcntl(mPipeFDs[1], F_SETFL, flags | O_NONBLOCK);
if (err == -1) goto failed;
ioc = g_io_channel_unix_new(mPipeFDs[0]);
source = g_io_create_watch(ioc, G_IO_IN);
g_io_channel_unref(ioc);
g_source_set_callback(source, (GSourceFunc)EventProcessorCallback, this,
nullptr);
g_source_set_can_recurse(source, TRUE);
mTag = g_source_attach(source, nullptr);
g_source_unref(source);
return nsBaseAppShell::Init();
failed:
close(mPipeFDs[0]);
close(mPipeFDs[1]);
mPipeFDs[0] = mPipeFDs[1] = 0;
return NS_ERROR_FAILURE;
}
void nsAppShell::ScheduleNativeEventCallback() {
unsigned char buf[] = {NOTIFY_TOKEN};
Unused << write(mPipeFDs[1], buf, 1);
}
bool nsAppShell::ProcessNextNativeEvent(bool mayWait) {
bool ret = g_main_context_iteration(nullptr, mayWait);
#ifdef MOZ_WAYLAND
mozilla::widget::WaylandDispatchDisplays();
#endif
return ret;
}