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godot/platform/linuxbsd/freedesktop_portal_desktop.cpp
Pāvels Nadtočajevs 0edb6bd4a0
[Linux/BSD] Initialize DBus only once.
2025-08-22 09:26:11 +03:00

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/**************************************************************************/
/* freedesktop_portal_desktop.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "freedesktop_portal_desktop.h"
#ifdef DBUS_ENABLED
#include "core/crypto/crypto_core.h"
#include "core/error/error_macros.h"
#include "core/os/os.h"
#include "core/string/ustring.h"
#include "core/variant/variant.h"
#ifdef SOWRAP_ENABLED
#include "dbus-so_wrap.h"
#else
#include <dbus/dbus.h>
#endif
#include <unistd.h>
#define BUS_OBJECT_NAME "org.freedesktop.portal.Desktop"
#define BUS_OBJECT_PATH "/org/freedesktop/portal/desktop"
#define BUS_INTERFACE_PROPERTIES "org.freedesktop.DBus.Properties"
#define BUS_INTERFACE_SETTINGS "org.freedesktop.portal.Settings"
#define BUS_INTERFACE_FILE_CHOOSER "org.freedesktop.portal.FileChooser"
#define BUS_INTERFACE_SCREENSHOT "org.freedesktop.portal.Screenshot"
bool FreeDesktopPortalDesktop::try_parse_variant(DBusMessage *p_reply_message, ReadVariantType p_type, void *r_value) {
DBusMessageIter iter[3];
dbus_message_iter_init(p_reply_message, &iter[0]);
if (dbus_message_iter_get_arg_type(&iter[0]) != DBUS_TYPE_VARIANT) {
return false;
}
dbus_message_iter_recurse(&iter[0], &iter[1]);
if (dbus_message_iter_get_arg_type(&iter[1]) != DBUS_TYPE_VARIANT) {
return false;
}
dbus_message_iter_recurse(&iter[1], &iter[2]);
if (p_type == VAR_TYPE_COLOR) {
if (dbus_message_iter_get_arg_type(&iter[2]) != DBUS_TYPE_STRUCT) {
return false;
}
DBusMessageIter struct_iter;
dbus_message_iter_recurse(&iter[2], &struct_iter);
int idx = 0;
while (dbus_message_iter_get_arg_type(&struct_iter) == DBUS_TYPE_DOUBLE) {
double value = 0.0;
dbus_message_iter_get_basic(&struct_iter, &value);
if (value < 0.0 || value > 1.0) {
return false;
}
if (idx == 0) {
static_cast<Color *>(r_value)->r = value;
} else if (idx == 1) {
static_cast<Color *>(r_value)->g = value;
} else if (idx == 2) {
static_cast<Color *>(r_value)->b = value;
}
idx++;
if (!dbus_message_iter_next(&struct_iter)) {
break;
}
}
if (idx != 3) {
return false;
}
} else if (p_type == VAR_TYPE_UINT32) {
if (dbus_message_iter_get_arg_type(&iter[2]) != DBUS_TYPE_UINT32) {
return false;
}
dbus_message_iter_get_basic(&iter[2], r_value);
} else if (p_type == VAR_TYPE_BOOL) {
if (dbus_message_iter_get_arg_type(&iter[2]) != DBUS_TYPE_BOOLEAN) {
return false;
}
dbus_message_iter_get_basic(&iter[2], r_value);
}
return true;
}
bool FreeDesktopPortalDesktop::read_setting(const char *p_namespace, const char *p_key, ReadVariantType p_type, void *r_value) {
if (unsupported) {
return false;
}
DBusError error;
dbus_error_init(&error);
DBusConnection *bus = dbus_bus_get(DBUS_BUS_SESSION, &error);
if (dbus_error_is_set(&error)) {
if (OS::get_singleton()->is_stdout_verbose()) {
ERR_PRINT(vformat("Error opening D-Bus connection: %s", error.message));
}
dbus_error_free(&error);
unsupported = true;
return false;
}
DBusMessage *message = dbus_message_new_method_call(
BUS_OBJECT_NAME, BUS_OBJECT_PATH, BUS_INTERFACE_SETTINGS,
"Read");
dbus_message_append_args(
message,
DBUS_TYPE_STRING, &p_namespace,
DBUS_TYPE_STRING, &p_key,
DBUS_TYPE_INVALID);
DBusMessage *reply = dbus_connection_send_with_reply_and_block(bus, message, 50, &error);
dbus_message_unref(message);
if (dbus_error_is_set(&error)) {
if (OS::get_singleton()->is_stdout_verbose()) {
ERR_PRINT(vformat("Error on D-Bus communication: %s", error.message));
}
dbus_error_free(&error);
dbus_connection_unref(bus);
return false;
}
bool success = try_parse_variant(reply, p_type, r_value);
dbus_message_unref(reply);
dbus_connection_unref(bus);
return success;
}
uint32_t FreeDesktopPortalDesktop::get_appearance_color_scheme() {
if (unsupported) {
return 0;
}
uint32_t value = 0;
if (read_setting("org.freedesktop.appearance", "color-scheme", VAR_TYPE_UINT32, &value)) {
return value;
} else {
return 0;
}
}
Color FreeDesktopPortalDesktop::get_appearance_accent_color() {
if (unsupported) {
return Color(0, 0, 0, 0);
}
Color value;
if (read_setting("org.freedesktop.appearance", "accent-color", VAR_TYPE_COLOR, &value)) {
return value;
} else {
return Color(0, 0, 0, 0);
}
}
uint32_t FreeDesktopPortalDesktop::get_high_contrast() {
if (unsupported) {
return -1;
}
dbus_bool_t value = false;
if (read_setting("org.gnome.desktop.a11y.interface", "high-contrast", VAR_TYPE_BOOL, &value)) {
return value;
}
return -1;
}
static const char *cs_empty = "";
void FreeDesktopPortalDesktop::append_dbus_string(DBusMessageIter *p_iter, const String &p_string) {
CharString cs = p_string.utf8();
const char *cs_ptr = cs.ptr();
if (cs_ptr) {
dbus_message_iter_append_basic(p_iter, DBUS_TYPE_STRING, &cs_ptr);
} else {
dbus_message_iter_append_basic(p_iter, DBUS_TYPE_STRING, &cs_empty);
}
}
void FreeDesktopPortalDesktop::append_dbus_dict_options(DBusMessageIter *p_iter, const TypedArray<Dictionary> &p_options, HashMap<String, String> &r_ids) {
DBusMessageIter dict_iter;
DBusMessageIter var_iter;
DBusMessageIter arr_iter;
const char *choices_key = "choices";
dbus_message_iter_open_container(p_iter, DBUS_TYPE_DICT_ENTRY, nullptr, &dict_iter);
dbus_message_iter_append_basic(&dict_iter, DBUS_TYPE_STRING, &choices_key);
dbus_message_iter_open_container(&dict_iter, DBUS_TYPE_VARIANT, "a(ssa(ss)s)", &var_iter);
dbus_message_iter_open_container(&var_iter, DBUS_TYPE_ARRAY, "(ss(ss)s)", &arr_iter);
r_ids.clear();
for (int i = 0; i < p_options.size(); i++) {
const Dictionary &item = p_options[i];
if (!item.has("name") || !item.has("values") || !item.has("default")) {
continue;
}
const String &name = item["name"];
const Vector<String> &options = item["values"];
int default_idx = item["default"];
DBusMessageIter struct_iter;
DBusMessageIter array_iter;
DBusMessageIter array_struct_iter;
dbus_message_iter_open_container(&arr_iter, DBUS_TYPE_STRUCT, nullptr, &struct_iter);
append_dbus_string(&struct_iter, "option_" + itos(i)); // ID.
append_dbus_string(&struct_iter, name); // User visible name.
r_ids["option_" + itos(i)] = name;
dbus_message_iter_open_container(&struct_iter, DBUS_TYPE_ARRAY, "(ss)", &array_iter);
for (int j = 0; j < options.size(); j++) {
dbus_message_iter_open_container(&array_iter, DBUS_TYPE_STRUCT, nullptr, &array_struct_iter);
append_dbus_string(&array_struct_iter, itos(j));
append_dbus_string(&array_struct_iter, options[j]);
dbus_message_iter_close_container(&array_iter, &array_struct_iter);
}
dbus_message_iter_close_container(&struct_iter, &array_iter);
if (options.is_empty()) {
append_dbus_string(&struct_iter, (default_idx) ? "true" : "false"); // Default selection.
} else {
append_dbus_string(&struct_iter, itos(default_idx)); // Default selection.
}
dbus_message_iter_close_container(&arr_iter, &struct_iter);
}
dbus_message_iter_close_container(&var_iter, &arr_iter);
dbus_message_iter_close_container(&dict_iter, &var_iter);
dbus_message_iter_close_container(p_iter, &dict_iter);
}
void FreeDesktopPortalDesktop::append_dbus_dict_filters(DBusMessageIter *p_iter, const Vector<String> &p_filter_names, const Vector<String> &p_filter_exts, const Vector<String> &p_filter_mimes) {
DBusMessageIter dict_iter;
DBusMessageIter var_iter;
DBusMessageIter arr_iter;
const char *filters_key = "filters";
ERR_FAIL_COND(p_filter_names.size() != p_filter_exts.size());
ERR_FAIL_COND(p_filter_names.size() != p_filter_mimes.size());
dbus_message_iter_open_container(p_iter, DBUS_TYPE_DICT_ENTRY, nullptr, &dict_iter);
dbus_message_iter_append_basic(&dict_iter, DBUS_TYPE_STRING, &filters_key);
dbus_message_iter_open_container(&dict_iter, DBUS_TYPE_VARIANT, "a(sa(us))", &var_iter);
dbus_message_iter_open_container(&var_iter, DBUS_TYPE_ARRAY, "(sa(us))", &arr_iter);
for (int i = 0; i < p_filter_names.size(); i++) {
DBusMessageIter struct_iter;
DBusMessageIter array_iter;
DBusMessageIter array_struct_iter;
dbus_message_iter_open_container(&arr_iter, DBUS_TYPE_STRUCT, nullptr, &struct_iter);
append_dbus_string(&struct_iter, p_filter_names[i]);
dbus_message_iter_open_container(&struct_iter, DBUS_TYPE_ARRAY, "(us)", &array_iter);
const String &flt_orig = p_filter_exts[i];
String flt;
for (int j = 0; j < flt_orig.length(); j++) {
if (is_unicode_letter(flt_orig[j])) {
flt += vformat("[%c%c]", String::char_lowercase(flt_orig[j]), String::char_uppercase(flt_orig[j]));
} else {
flt += flt_orig[j];
}
}
int filter_slice_count = flt.get_slice_count(",");
for (int j = 0; j < filter_slice_count; j++) {
dbus_message_iter_open_container(&array_iter, DBUS_TYPE_STRUCT, nullptr, &array_struct_iter);
String str = (flt.get_slicec(',', j).strip_edges());
{
const unsigned flt_type = 0;
dbus_message_iter_append_basic(&array_struct_iter, DBUS_TYPE_UINT32, &flt_type);
}
append_dbus_string(&array_struct_iter, str);
dbus_message_iter_close_container(&array_iter, &array_struct_iter);
}
const String &mime = p_filter_mimes[i];
filter_slice_count = mime.get_slice_count(",");
for (int j = 0; j < filter_slice_count; j++) {
dbus_message_iter_open_container(&array_iter, DBUS_TYPE_STRUCT, nullptr, &array_struct_iter);
String str = mime.get_slicec(',', j).strip_edges();
{
const unsigned flt_type = 1;
dbus_message_iter_append_basic(&array_struct_iter, DBUS_TYPE_UINT32, &flt_type);
}
append_dbus_string(&array_struct_iter, str);
dbus_message_iter_close_container(&array_iter, &array_struct_iter);
}
dbus_message_iter_close_container(&struct_iter, &array_iter);
dbus_message_iter_close_container(&arr_iter, &struct_iter);
}
dbus_message_iter_close_container(&var_iter, &arr_iter);
dbus_message_iter_close_container(&dict_iter, &var_iter);
dbus_message_iter_close_container(p_iter, &dict_iter);
}
void FreeDesktopPortalDesktop::append_dbus_dict_string(DBusMessageIter *p_iter, const String &p_key, const String &p_value, bool p_as_byte_array) {
DBusMessageIter dict_iter;
DBusMessageIter var_iter;
dbus_message_iter_open_container(p_iter, DBUS_TYPE_DICT_ENTRY, nullptr, &dict_iter);
append_dbus_string(&dict_iter, p_key);
if (p_as_byte_array) {
DBusMessageIter arr_iter;
dbus_message_iter_open_container(&dict_iter, DBUS_TYPE_VARIANT, "ay", &var_iter);
dbus_message_iter_open_container(&var_iter, DBUS_TYPE_ARRAY, "y", &arr_iter);
CharString cs = p_value.utf8();
const char *cs_ptr = cs.get_data();
do {
dbus_message_iter_append_basic(&arr_iter, DBUS_TYPE_BYTE, cs_ptr);
} while (*cs_ptr++);
dbus_message_iter_close_container(&var_iter, &arr_iter);
} else {
dbus_message_iter_open_container(&dict_iter, DBUS_TYPE_VARIANT, "s", &var_iter);
append_dbus_string(&var_iter, p_value);
}
dbus_message_iter_close_container(&dict_iter, &var_iter);
dbus_message_iter_close_container(p_iter, &dict_iter);
}
void FreeDesktopPortalDesktop::append_dbus_dict_bool(DBusMessageIter *p_iter, const String &p_key, bool p_value) {
DBusMessageIter dict_iter;
DBusMessageIter var_iter;
dbus_message_iter_open_container(p_iter, DBUS_TYPE_DICT_ENTRY, nullptr, &dict_iter);
append_dbus_string(&dict_iter, p_key);
dbus_message_iter_open_container(&dict_iter, DBUS_TYPE_VARIANT, "b", &var_iter);
{
int val = p_value;
dbus_message_iter_append_basic(&var_iter, DBUS_TYPE_BOOLEAN, &val);
}
dbus_message_iter_close_container(&dict_iter, &var_iter);
dbus_message_iter_close_container(p_iter, &dict_iter);
}
bool FreeDesktopPortalDesktop::color_picker_parse_response(DBusMessageIter *p_iter, bool &r_cancel, Color &r_color) {
ERR_FAIL_COND_V(dbus_message_iter_get_arg_type(p_iter) != DBUS_TYPE_UINT32, false);
dbus_uint32_t resp_code;
dbus_message_iter_get_basic(p_iter, &resp_code);
if (resp_code != 0) {
r_cancel = true;
} else {
r_cancel = false;
ERR_FAIL_COND_V(!dbus_message_iter_next(p_iter), false);
ERR_FAIL_COND_V(dbus_message_iter_get_arg_type(p_iter) != DBUS_TYPE_ARRAY, false);
DBusMessageIter dict_iter;
dbus_message_iter_recurse(p_iter, &dict_iter);
while (dbus_message_iter_get_arg_type(&dict_iter) == DBUS_TYPE_DICT_ENTRY) {
DBusMessageIter iter;
dbus_message_iter_recurse(&dict_iter, &iter);
if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_STRING) {
const char *key;
dbus_message_iter_get_basic(&iter, &key);
dbus_message_iter_next(&iter);
DBusMessageIter var_iter;
dbus_message_iter_recurse(&iter, &var_iter);
if (strcmp(key, "color") == 0) { // (ddd)
if (dbus_message_iter_get_arg_type(&var_iter) == DBUS_TYPE_STRUCT) {
DBusMessageIter struct_iter;
dbus_message_iter_recurse(&var_iter, &struct_iter);
int idx = 0;
while (dbus_message_iter_get_arg_type(&struct_iter) == DBUS_TYPE_DOUBLE) {
double value = 0.0;
dbus_message_iter_get_basic(&struct_iter, &value);
if (idx == 0) {
r_color.r = value;
} else if (idx == 1) {
r_color.g = value;
} else if (idx == 2) {
r_color.b = value;
}
idx++;
if (!dbus_message_iter_next(&struct_iter)) {
break;
}
}
}
}
}
if (!dbus_message_iter_next(&dict_iter)) {
break;
}
}
}
return true;
}
bool FreeDesktopPortalDesktop::file_chooser_parse_response(DBusMessageIter *p_iter, const Vector<String> &p_names, const HashMap<String, String> &p_ids, bool &r_cancel, Vector<String> &r_urls, int &r_index, Dictionary &r_options) {
ERR_FAIL_COND_V(dbus_message_iter_get_arg_type(p_iter) != DBUS_TYPE_UINT32, false);
dbus_uint32_t resp_code;
dbus_message_iter_get_basic(p_iter, &resp_code);
if (resp_code != 0) {
r_cancel = true;
} else {
r_cancel = false;
ERR_FAIL_COND_V(!dbus_message_iter_next(p_iter), false);
ERR_FAIL_COND_V(dbus_message_iter_get_arg_type(p_iter) != DBUS_TYPE_ARRAY, false);
DBusMessageIter dict_iter;
dbus_message_iter_recurse(p_iter, &dict_iter);
while (dbus_message_iter_get_arg_type(&dict_iter) == DBUS_TYPE_DICT_ENTRY) {
DBusMessageIter iter;
dbus_message_iter_recurse(&dict_iter, &iter);
if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_STRING) {
const char *key;
dbus_message_iter_get_basic(&iter, &key);
dbus_message_iter_next(&iter);
DBusMessageIter var_iter;
dbus_message_iter_recurse(&iter, &var_iter);
if (strcmp(key, "current_filter") == 0) { // (sa(us))
if (dbus_message_iter_get_arg_type(&var_iter) == DBUS_TYPE_STRUCT) {
DBusMessageIter struct_iter;
dbus_message_iter_recurse(&var_iter, &struct_iter);
while (dbus_message_iter_get_arg_type(&struct_iter) == DBUS_TYPE_STRING) {
const char *value;
dbus_message_iter_get_basic(&struct_iter, &value);
String name = String::utf8(value);
r_index = p_names.find(name);
if (!dbus_message_iter_next(&struct_iter)) {
break;
}
}
}
} else if (strcmp(key, "choices") == 0) { // a(ss) {
if (dbus_message_iter_get_arg_type(&var_iter) == DBUS_TYPE_ARRAY) {
DBusMessageIter struct_iter;
dbus_message_iter_recurse(&var_iter, &struct_iter);
while (dbus_message_iter_get_arg_type(&struct_iter) == DBUS_TYPE_STRUCT) {
DBusMessageIter opt_iter;
dbus_message_iter_recurse(&struct_iter, &opt_iter);
const char *opt_key = nullptr;
dbus_message_iter_get_basic(&opt_iter, &opt_key);
String opt_skey = String::utf8(opt_key);
dbus_message_iter_next(&opt_iter);
const char *opt_val = nullptr;
dbus_message_iter_get_basic(&opt_iter, &opt_val);
String opt_sval = String::utf8(opt_val);
if (p_ids.has(opt_skey)) {
opt_skey = p_ids[opt_skey];
if (opt_sval == "true") {
r_options[opt_skey] = true;
} else if (opt_sval == "false") {
r_options[opt_skey] = false;
} else {
r_options[opt_skey] = opt_sval.to_int();
}
}
if (!dbus_message_iter_next(&struct_iter)) {
break;
}
}
}
} else if (strcmp(key, "uris") == 0) { // as
if (dbus_message_iter_get_arg_type(&var_iter) == DBUS_TYPE_ARRAY) {
DBusMessageIter uri_iter;
dbus_message_iter_recurse(&var_iter, &uri_iter);
while (dbus_message_iter_get_arg_type(&uri_iter) == DBUS_TYPE_STRING) {
const char *value;
dbus_message_iter_get_basic(&uri_iter, &value);
r_urls.push_back(String::utf8(value).trim_prefix("file://").uri_file_decode());
if (!dbus_message_iter_next(&uri_iter)) {
break;
}
}
}
}
}
if (!dbus_message_iter_next(&dict_iter)) {
break;
}
}
}
return true;
}
bool FreeDesktopPortalDesktop::color_picker(const String &p_xid, const Callable &p_callback) {
if (unsupported) {
return false;
}
DBusError err;
dbus_error_init(&err);
// Open connection and add signal handler.
ColorPickerData cd;
cd.callback = p_callback;
CryptoCore::RandomGenerator rng;
ERR_FAIL_COND_V_MSG(rng.init(), false, "Failed to initialize random number generator.");
uint8_t uuid[64];
Error rng_err = rng.get_random_bytes(uuid, 64);
ERR_FAIL_COND_V_MSG(rng_err, false, "Failed to generate unique token.");
String dbus_unique_name = String::utf8(dbus_bus_get_unique_name(monitor_connection));
String token = String::hex_encode_buffer(uuid, 64);
String path = vformat("/org/freedesktop/portal/desktop/request/%s/%s", dbus_unique_name.replace_char('.', '_').remove_char(':'), token);
cd.path = path;
cd.filter = vformat("type='signal',sender='org.freedesktop.portal.Desktop',path='%s',interface='org.freedesktop.portal.Request',member='Response',destination='%s'", path, dbus_unique_name);
dbus_bus_add_match(monitor_connection, cd.filter.utf8().get_data(), &err);
if (dbus_error_is_set(&err)) {
ERR_PRINT(vformat("Failed to add DBus match: %s", err.message));
dbus_error_free(&err);
return false;
}
DBusMessage *message = dbus_message_new_method_call(BUS_OBJECT_NAME, BUS_OBJECT_PATH, BUS_INTERFACE_SCREENSHOT, "PickColor");
{
DBusMessageIter iter;
dbus_message_iter_init_append(message, &iter);
append_dbus_string(&iter, p_xid);
DBusMessageIter arr_iter;
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "{sv}", &arr_iter);
append_dbus_dict_string(&arr_iter, "handle_token", token);
dbus_message_iter_close_container(&iter, &arr_iter);
}
DBusMessage *reply = dbus_connection_send_with_reply_and_block(monitor_connection, message, DBUS_TIMEOUT_INFINITE, &err);
dbus_message_unref(message);
if (!reply || dbus_error_is_set(&err)) {
ERR_PRINT(vformat("Failed to send DBus message: %s", err.message));
dbus_error_free(&err);
dbus_bus_remove_match(monitor_connection, cd.filter.utf8().get_data(), &err);
return false;
}
// Update signal path.
{
DBusMessageIter iter;
if (dbus_message_iter_init(reply, &iter)) {
if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_OBJECT_PATH) {
const char *new_path = nullptr;
dbus_message_iter_get_basic(&iter, &new_path);
if (String::utf8(new_path) != path) {
dbus_bus_remove_match(monitor_connection, cd.filter.utf8().get_data(), &err);
if (dbus_error_is_set(&err)) {
ERR_PRINT(vformat("Failed to remove DBus match: %s", err.message));
dbus_error_free(&err);
return false;
}
cd.filter = String::utf8(new_path);
dbus_bus_add_match(monitor_connection, cd.filter.utf8().get_data(), &err);
if (dbus_error_is_set(&err)) {
ERR_PRINT(vformat("Failed to add DBus match: %s", err.message));
dbus_error_free(&err);
return false;
}
}
}
}
}
dbus_message_unref(reply);
MutexLock lock(color_picker_mutex);
color_pickers.push_back(cd);
return true;
}
bool FreeDesktopPortalDesktop::_is_interface_supported(const char *p_iface) {
bool supported = false;
DBusError err;
dbus_error_init(&err);
DBusConnection *bus = dbus_bus_get(DBUS_BUS_SESSION, &err);
if (dbus_error_is_set(&err)) {
dbus_error_free(&err);
} else {
DBusMessage *message = dbus_message_new_method_call(BUS_OBJECT_NAME, BUS_OBJECT_PATH, BUS_INTERFACE_PROPERTIES, "Get");
if (message) {
const char *name_space = p_iface;
const char *key = "version";
dbus_message_append_args(
message,
DBUS_TYPE_STRING, &name_space,
DBUS_TYPE_STRING, &key,
DBUS_TYPE_INVALID);
DBusMessage *reply = dbus_connection_send_with_reply_and_block(bus, message, 250, &err);
if (dbus_error_is_set(&err)) {
dbus_error_free(&err);
} else if (reply) {
DBusMessageIter iter;
if (dbus_message_iter_init(reply, &iter)) {
DBusMessageIter iter_ver;
dbus_message_iter_recurse(&iter, &iter_ver);
dbus_uint32_t ver_code;
dbus_message_iter_get_basic(&iter_ver, &ver_code);
print_verbose(vformat("PortalDesktop: %s version %d detected.", p_iface, ver_code));
supported = true;
}
dbus_message_unref(reply);
}
dbus_message_unref(message);
}
dbus_connection_unref(bus);
}
return supported;
}
bool FreeDesktopPortalDesktop::is_file_chooser_supported() {
static int supported = -1;
if (supported == -1) {
supported = _is_interface_supported(BUS_INTERFACE_FILE_CHOOSER);
}
return supported;
}
bool FreeDesktopPortalDesktop::is_settings_supported() {
static int supported = -1;
if (supported == -1) {
supported = _is_interface_supported(BUS_INTERFACE_SETTINGS);
}
return supported;
}
bool FreeDesktopPortalDesktop::is_screenshot_supported() {
static int supported = -1;
if (supported == -1) {
supported = _is_interface_supported(BUS_INTERFACE_SCREENSHOT);
}
return supported;
}
Error FreeDesktopPortalDesktop::file_dialog_show(DisplayServer::WindowID p_window_id, const String &p_xid, const String &p_title, const String &p_current_directory, const String &p_root, const String &p_filename, DisplayServer::FileDialogMode p_mode, const Vector<String> &p_filters, const TypedArray<Dictionary> &p_options, const Callable &p_callback, bool p_options_in_cb) {
if (unsupported) {
return FAILED;
}
ERR_FAIL_INDEX_V(int(p_mode), DisplayServer::FILE_DIALOG_MODE_SAVE_MAX, FAILED);
ERR_FAIL_NULL_V(monitor_connection, FAILED);
Vector<String> filter_names;
Vector<String> filter_exts;
Vector<String> filter_mimes;
for (int i = 0; i < p_filters.size(); i++) {
Vector<String> tokens = p_filters[i].split(";");
if (tokens.size() >= 1) {
String flt = tokens[0].strip_edges();
String mime = (tokens.size() >= 3) ? tokens[2].strip_edges() : String();
if (!flt.is_empty() || !mime.is_empty()) {
if (tokens.size() >= 2) {
if (flt == "*.*") {
filter_exts.push_back("*");
} else {
filter_exts.push_back(flt);
}
filter_mimes.push_back(mime);
filter_names.push_back(tokens[1]);
} else {
if (flt == "*.*") {
filter_exts.push_back("*");
filter_names.push_back(RTR("All Files") + " (*.*)");
} else {
filter_exts.push_back(flt);
filter_names.push_back(flt);
}
filter_mimes.push_back(mime);
}
}
}
}
if (filter_names.is_empty()) {
filter_exts.push_back("*");
filter_mimes.push_back("");
filter_names.push_back(RTR("All Files") + " (*.*)");
}
DBusError err;
dbus_error_init(&err);
// Open connection and add signal handler.
FileDialogData fd;
fd.callback = p_callback;
fd.prev_focus = p_window_id;
fd.filter_names = filter_names;
fd.opt_in_cb = p_options_in_cb;
CryptoCore::RandomGenerator rng;
ERR_FAIL_COND_V_MSG(rng.init(), FAILED, "Failed to initialize random number generator.");
uint8_t uuid[64];
Error rng_err = rng.get_random_bytes(uuid, 64);
ERR_FAIL_COND_V_MSG(rng_err, rng_err, "Failed to generate unique token.");
String dbus_unique_name = String::utf8(dbus_bus_get_unique_name(monitor_connection));
String token = String::hex_encode_buffer(uuid, 64);
String path = vformat("/org/freedesktop/portal/desktop/request/%s/%s", dbus_unique_name.replace_char('.', '_').remove_char(':'), token);
fd.path = path;
fd.filter = vformat("type='signal',sender='org.freedesktop.portal.Desktop',path='%s',interface='org.freedesktop.portal.Request',member='Response',destination='%s'", path, dbus_unique_name);
dbus_bus_add_match(monitor_connection, fd.filter.utf8().get_data(), &err);
if (dbus_error_is_set(&err)) {
ERR_PRINT(vformat("Failed to add DBus match: %s", err.message));
dbus_error_free(&err);
return FAILED;
}
// Generate FileChooser message.
const char *method = nullptr;
if (p_mode == DisplayServer::FILE_DIALOG_MODE_SAVE_FILE) {
method = "SaveFile";
} else {
method = "OpenFile";
}
DBusMessage *message = dbus_message_new_method_call(BUS_OBJECT_NAME, BUS_OBJECT_PATH, BUS_INTERFACE_FILE_CHOOSER, method);
{
DBusMessageIter iter;
dbus_message_iter_init_append(message, &iter);
append_dbus_string(&iter, p_xid);
append_dbus_string(&iter, p_title);
DBusMessageIter arr_iter;
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "{sv}", &arr_iter);
append_dbus_dict_string(&arr_iter, "handle_token", token);
append_dbus_dict_bool(&arr_iter, "multiple", p_mode == DisplayServer::FILE_DIALOG_MODE_OPEN_FILES);
append_dbus_dict_bool(&arr_iter, "directory", p_mode == DisplayServer::FILE_DIALOG_MODE_OPEN_DIR);
append_dbus_dict_filters(&arr_iter, filter_names, filter_exts, filter_mimes);
append_dbus_dict_options(&arr_iter, p_options, fd.option_ids);
append_dbus_dict_string(&arr_iter, "current_folder", p_current_directory, true);
if (p_mode == DisplayServer::FILE_DIALOG_MODE_SAVE_FILE) {
append_dbus_dict_string(&arr_iter, "current_name", p_filename);
}
dbus_message_iter_close_container(&iter, &arr_iter);
}
DBusMessage *reply = dbus_connection_send_with_reply_and_block(monitor_connection, message, DBUS_TIMEOUT_INFINITE, &err);
dbus_message_unref(message);
if (!reply || dbus_error_is_set(&err)) {
ERR_PRINT(vformat("Failed to send DBus message: %s", err.message));
dbus_error_free(&err);
dbus_bus_remove_match(monitor_connection, fd.filter.utf8().get_data(), &err);
return FAILED;
}
// Update signal path.
{
DBusMessageIter iter;
if (dbus_message_iter_init(reply, &iter)) {
if (dbus_message_iter_get_arg_type(&iter) == DBUS_TYPE_OBJECT_PATH) {
const char *new_path = nullptr;
dbus_message_iter_get_basic(&iter, &new_path);
if (String::utf8(new_path) != path) {
dbus_bus_remove_match(monitor_connection, fd.filter.utf8().get_data(), &err);
if (dbus_error_is_set(&err)) {
ERR_PRINT(vformat("Failed to remove DBus match: %s", err.message));
dbus_error_free(&err);
return FAILED;
}
fd.filter = String::utf8(new_path);
dbus_bus_add_match(monitor_connection, fd.filter.utf8().get_data(), &err);
if (dbus_error_is_set(&err)) {
ERR_PRINT(vformat("Failed to add DBus match: %s", err.message));
dbus_error_free(&err);
return FAILED;
}
}
}
}
}
dbus_message_unref(reply);
MutexLock lock(file_dialog_mutex);
file_dialogs.push_back(fd);
return OK;
}
void FreeDesktopPortalDesktop::process_callbacks() {
{
MutexLock lock(file_dialog_mutex);
while (!pending_file_cbs.is_empty()) {
FileDialogCallback cb = pending_file_cbs.front()->get();
pending_file_cbs.pop_front();
if (cb.opt_in_cb) {
Variant ret;
Callable::CallError ce;
const Variant *args[4] = { &cb.status, &cb.files, &cb.index, &cb.options };
cb.callback.callp(args, 4, ret, ce);
if (ce.error != Callable::CallError::CALL_OK) {
ERR_PRINT(vformat("Failed to execute file dialog callback: %s.", Variant::get_callable_error_text(cb.callback, args, 4, ce)));
}
} else {
Variant ret;
Callable::CallError ce;
const Variant *args[3] = { &cb.status, &cb.files, &cb.index };
cb.callback.callp(args, 3, ret, ce);
if (ce.error != Callable::CallError::CALL_OK) {
ERR_PRINT(vformat("Failed to execute file dialog callback: %s.", Variant::get_callable_error_text(cb.callback, args, 3, ce)));
}
}
}
}
{
MutexLock lock(color_picker_mutex);
while (!pending_color_cbs.is_empty()) {
ColorPickerCallback cb = pending_color_cbs.front()->get();
pending_color_cbs.pop_front();
Variant ret;
Callable::CallError ce;
const Variant *args[2] = { &cb.status, &cb.color };
cb.callback.callp(args, 2, ret, ce);
if (ce.error != Callable::CallError::CALL_OK) {
ERR_PRINT(vformat("Failed to execute color picker callback: %s.", Variant::get_callable_error_text(cb.callback, args, 2, ce)));
}
}
}
}
void FreeDesktopPortalDesktop::_thread_monitor(void *p_ud) {
FreeDesktopPortalDesktop *portal = (FreeDesktopPortalDesktop *)p_ud;
while (!portal->monitor_thread_abort.is_set()) {
if (portal->monitor_connection) {
while (true) {
DBusMessage *msg = dbus_connection_pop_message(portal->monitor_connection);
if (!msg) {
break;
} else if (dbus_message_is_signal(msg, "org.freedesktop.portal.Settings", "SettingChanged")) {
DBusMessageIter iter;
if (dbus_message_iter_init(msg, &iter)) {
const char *value;
dbus_message_iter_get_basic(&iter, &value);
String name_space = String::utf8(value);
dbus_message_iter_next(&iter);
dbus_message_iter_get_basic(&iter, &value);
String key = String::utf8(value);
if (name_space == "org.freedesktop.appearance" && (key == "color-scheme" || key == "accent-color")) {
callable_mp(portal, &FreeDesktopPortalDesktop::_system_theme_changed_callback).call_deferred();
}
}
} else if (dbus_message_is_signal(msg, "org.freedesktop.portal.Request", "Response")) {
String path = String::utf8(dbus_message_get_path(msg));
{
MutexLock lock(portal->file_dialog_mutex);
for (int i = 0; i < portal->file_dialogs.size(); i++) {
FreeDesktopPortalDesktop::FileDialogData &fd = portal->file_dialogs.write[i];
if (fd.path == path) {
DBusMessageIter iter;
if (dbus_message_iter_init(msg, &iter)) {
bool cancel = false;
Vector<String> uris;
Dictionary options;
int index = 0;
file_chooser_parse_response(&iter, fd.filter_names, fd.option_ids, cancel, uris, index, options);
if (fd.callback.is_valid()) {
FileDialogCallback cb;
cb.callback = fd.callback;
cb.status = !cancel;
cb.files = uris;
cb.index = index;
cb.options = options;
cb.opt_in_cb = fd.opt_in_cb;
portal->pending_file_cbs.push_back(cb);
}
if (fd.prev_focus != DisplayServer::INVALID_WINDOW_ID) {
callable_mp(DisplayServer::get_singleton(), &DisplayServer::window_move_to_foreground).call_deferred(fd.prev_focus);
}
}
DBusError err;
dbus_error_init(&err);
dbus_bus_remove_match(portal->monitor_connection, fd.filter.utf8().get_data(), &err);
dbus_error_free(&err);
portal->file_dialogs.remove_at(i);
break;
}
}
}
{
MutexLock lock(portal->color_picker_mutex);
for (int i = 0; i < portal->color_pickers.size(); i++) {
FreeDesktopPortalDesktop::ColorPickerData &cd = portal->color_pickers.write[i];
if (cd.path == path) {
DBusMessageIter iter;
if (dbus_message_iter_init(msg, &iter)) {
bool cancel = false;
Color c;
color_picker_parse_response(&iter, cancel, c);
if (cd.callback.is_valid()) {
ColorPickerCallback cb;
cb.callback = cd.callback;
cb.color = c;
cb.status = !cancel;
portal->pending_color_cbs.push_back(cb);
}
}
DBusError err;
dbus_error_init(&err);
dbus_bus_remove_match(portal->monitor_connection, cd.filter.utf8().get_data(), &err);
dbus_error_free(&err);
portal->color_pickers.remove_at(i);
break;
}
}
}
}
dbus_message_unref(msg);
}
dbus_connection_read_write(portal->monitor_connection, 0);
}
OS::get_singleton()->delay_usec(50'000);
}
}
void FreeDesktopPortalDesktop::_system_theme_changed_callback() {
if (system_theme_changed.is_valid()) {
Variant ret;
Callable::CallError ce;
system_theme_changed.callp(nullptr, 0, ret, ce);
if (ce.error != Callable::CallError::CALL_OK) {
ERR_PRINT(vformat("Failed to execute system theme changed callback: %s.", Variant::get_callable_error_text(system_theme_changed, nullptr, 0, ce)));
}
}
}
FreeDesktopPortalDesktop::FreeDesktopPortalDesktop() {
DBusError err;
dbus_error_init(&err);
monitor_connection = dbus_bus_get(DBUS_BUS_SESSION, &err);
if (dbus_error_is_set(&err)) {
dbus_error_free(&err);
} else {
theme_path = "type='signal',sender='org.freedesktop.portal.Desktop',interface='org.freedesktop.portal.Settings',member='SettingChanged'";
dbus_bus_add_match(monitor_connection, theme_path.utf8().get_data(), &err);
if (dbus_error_is_set(&err)) {
dbus_error_free(&err);
dbus_connection_unref(monitor_connection);
monitor_connection = nullptr;
}
dbus_connection_read_write(monitor_connection, 0);
}
if (!unsupported) {
monitor_thread_abort.clear();
monitor_thread.start(FreeDesktopPortalDesktop::_thread_monitor, this);
}
}
FreeDesktopPortalDesktop::~FreeDesktopPortalDesktop() {
monitor_thread_abort.set();
if (monitor_thread.is_started()) {
monitor_thread.wait_to_finish();
}
if (monitor_connection) {
DBusError err;
for (FreeDesktopPortalDesktop::FileDialogData &fd : file_dialogs) {
dbus_error_init(&err);
dbus_bus_remove_match(monitor_connection, fd.filter.utf8().get_data(), &err);
dbus_error_free(&err);
}
dbus_error_init(&err);
dbus_bus_remove_match(monitor_connection, theme_path.utf8().get_data(), &err);
dbus_error_free(&err);
dbus_connection_unref(monitor_connection);
}
}
#endif // DBUS_ENABLED
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