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![Riteo](/assets/img/avatar_default.png)
Fixes two related segfaults caused by running the DBus version check unconditionally and potentially calling null function pointers. This was clearly an oversight as all the other wrappers have proper loading status checks.
163 lines
5.5 KiB
C++
163 lines
5.5 KiB
C++
/**************************************************************************/
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/* freedesktop_screensaver.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "freedesktop_screensaver.h"
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#ifdef DBUS_ENABLED
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#include "core/config/project_settings.h"
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#ifdef SOWRAP_ENABLED
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#include "dbus-so_wrap.h"
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#else
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#include <dbus/dbus.h>
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#endif
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#define BUS_OBJECT_NAME "org.freedesktop.ScreenSaver"
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#define BUS_OBJECT_PATH "/org/freedesktop/ScreenSaver"
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#define BUS_INTERFACE "org.freedesktop.ScreenSaver"
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void FreeDesktopScreenSaver::inhibit() {
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if (unsupported) {
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return;
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}
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DBusError error;
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dbus_error_init(&error);
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DBusConnection *bus = dbus_bus_get(DBUS_BUS_SESSION, &error);
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if (dbus_error_is_set(&error)) {
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dbus_error_free(&error);
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unsupported = true;
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return;
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}
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String app_name_string = GLOBAL_GET("application/config/name");
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CharString app_name_utf8 = app_name_string.utf8();
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const char *app_name = app_name_string.is_empty() ? "Godot Engine" : app_name_utf8.get_data();
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const char *reason = "Running Godot Engine project";
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DBusMessage *message = dbus_message_new_method_call(
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BUS_OBJECT_NAME, BUS_OBJECT_PATH, BUS_INTERFACE,
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"Inhibit");
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dbus_message_append_args(
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message,
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DBUS_TYPE_STRING, &app_name,
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DBUS_TYPE_STRING, &reason,
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DBUS_TYPE_INVALID);
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DBusMessage *reply = dbus_connection_send_with_reply_and_block(bus, message, 50, &error);
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dbus_message_unref(message);
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if (dbus_error_is_set(&error)) {
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dbus_error_free(&error);
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dbus_connection_unref(bus);
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unsupported = false;
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return;
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}
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DBusMessageIter reply_iter;
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dbus_message_iter_init(reply, &reply_iter);
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dbus_message_iter_get_basic(&reply_iter, &cookie);
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print_verbose("FreeDesktopScreenSaver: Acquired screensaver inhibition cookie: " + uitos(cookie));
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dbus_message_unref(reply);
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dbus_connection_unref(bus);
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}
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void FreeDesktopScreenSaver::uninhibit() {
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if (unsupported) {
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return;
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}
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DBusError error;
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dbus_error_init(&error);
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DBusConnection *bus = dbus_bus_get(DBUS_BUS_SESSION, &error);
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if (dbus_error_is_set(&error)) {
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dbus_error_free(&error);
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unsupported = true;
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return;
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}
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DBusMessage *message = dbus_message_new_method_call(
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BUS_OBJECT_NAME, BUS_OBJECT_PATH, BUS_INTERFACE,
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"UnInhibit");
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dbus_message_append_args(
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message,
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DBUS_TYPE_UINT32, &cookie,
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DBUS_TYPE_INVALID);
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DBusMessage *reply = dbus_connection_send_with_reply_and_block(bus, message, 50, &error);
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if (dbus_error_is_set(&error)) {
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dbus_error_free(&error);
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dbus_connection_unref(bus);
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unsupported = true;
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return;
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}
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print_verbose("FreeDesktopScreenSaver: Released screensaver inhibition cookie: " + uitos(cookie));
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dbus_message_unref(message);
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dbus_message_unref(reply);
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dbus_connection_unref(bus);
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}
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FreeDesktopScreenSaver::FreeDesktopScreenSaver() {
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#ifdef SOWRAP_ENABLED
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#ifdef DEBUG_ENABLED
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int dylibloader_verbose = 1;
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#else
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int dylibloader_verbose = 0;
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#endif
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unsupported = (initialize_dbus(dylibloader_verbose) != 0);
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#else
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unsupported = false;
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#endif
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if (unsupported) {
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return;
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}
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bool ver_ok = false;
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int version_major = 0;
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int version_minor = 0;
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int version_rev = 0;
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dbus_get_version(&version_major, &version_minor, &version_rev);
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ver_ok = (version_major == 1 && version_minor >= 10) || (version_major > 1); // 1.10.0
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print_verbose(vformat("ScreenSaver: DBus %d.%d.%d detected.", version_major, version_minor, version_rev));
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if (!ver_ok) {
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print_verbose("ScreenSaver:: Unsupported DBus library version!");
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unsupported = true;
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}
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}
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#endif // DBUS_ENABLED
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