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godot/platform/linuxbsd/os_linuxbsd.cpp

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/*************************************************************************/
/* os_linuxbsd.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 "os_linuxbsd.h"
#include "core/io/dir_access.h"
#include "main/main.h"
#include "servers/display_server.h"
#ifdef X11_ENABLED
#include "display_server_x11.h"
#endif
#ifdef HAVE_MNTENT
#include <mntent.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dlfcn.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
void OS_LinuxBSD::alert(const String &p_alert, const String &p_title) {
const char *message_programs[] = { "zenity", "kdialog", "Xdialog", "xmessage" };
String path = get_environment("PATH");
Vector<String> path_elems = path.split(":", false);
String program;
for (int i = 0; i < path_elems.size(); i++) {
for (uint64_t k = 0; k < sizeof(message_programs) / sizeof(char *); k++) {
String tested_path = path_elems[i].plus_file(message_programs[k]);
if (FileAccess::exists(tested_path)) {
program = tested_path;
break;
}
}
if (program.length()) {
break;
}
}
List<String> args;
if (program.ends_with("zenity")) {
args.push_back("--error");
args.push_back("--width");
args.push_back("500");
args.push_back("--title");
args.push_back(p_title);
args.push_back("--text");
args.push_back(p_alert);
}
if (program.ends_with("kdialog")) {
args.push_back("--error");
args.push_back(p_alert);
args.push_back("--title");
args.push_back(p_title);
}
if (program.ends_with("Xdialog")) {
args.push_back("--title");
args.push_back(p_title);
args.push_back("--msgbox");
args.push_back(p_alert);
args.push_back("0");
args.push_back("0");
}
if (program.ends_with("xmessage")) {
args.push_back("-center");
args.push_back("-title");
args.push_back(p_title);
args.push_back(p_alert);
}
if (program.length()) {
execute(program, args);
} else {
print_line(p_alert);
}
}
void OS_LinuxBSD::initialize() {
crash_handler.initialize();
OS_Unix::initialize_core();
}
void OS_LinuxBSD::initialize_joypads() {
#ifdef JOYDEV_ENABLED
joypad = memnew(JoypadLinux(Input::get_singleton()));
#endif
}
String OS_LinuxBSD::get_unique_id() const {
static String machine_id;
if (machine_id.is_empty()) {
Ref<FileAccess> f = FileAccess::open("/etc/machine-id", FileAccess::READ);
if (f.is_valid()) {
while (machine_id.is_empty() && !f->eof_reached()) {
machine_id = f->get_line().strip_edges();
}
}
}
return machine_id;
}
String OS_LinuxBSD::get_processor_name() const {
Ref<FileAccess> f = FileAccess::open("/proc/cpuinfo", FileAccess::READ);
ERR_FAIL_COND_V_MSG(f.is_null(), "", String("Couldn't open `/proc/cpuinfo` to get the CPU model name. Returning an empty string."));
while (!f->eof_reached()) {
const String line = f->get_line();
if (line.find("model name") != -1) {
return line.split(":")[1].strip_edges();
}
}
ERR_FAIL_V_MSG("", String("Couldn't get the CPU model name from `/proc/cpuinfo`. Returning an empty string."));
}
void OS_LinuxBSD::finalize() {
if (main_loop) {
memdelete(main_loop);
}
main_loop = nullptr;
#ifdef ALSAMIDI_ENABLED
driver_alsamidi.close();
#endif
#ifdef JOYDEV_ENABLED
if (joypad) {
memdelete(joypad);
}
#endif
}
MainLoop *OS_LinuxBSD::get_main_loop() const {
return main_loop;
}
void OS_LinuxBSD::delete_main_loop() {
if (main_loop) {
memdelete(main_loop);
}
main_loop = nullptr;
}
void OS_LinuxBSD::set_main_loop(MainLoop *p_main_loop) {
main_loop = p_main_loop;
}
String OS_LinuxBSD::get_name() const {
#ifdef __linux__
return "Linux";
#elif defined(__FreeBSD__)
return "FreeBSD";
#elif defined(__NetBSD__)
return "NetBSD";
#elif defined(__OpenBSD__)
return "OpenBSD";
#else
return "BSD";
#endif
}
Error OS_LinuxBSD::shell_open(String p_uri) {
Error ok;
int err_code;
List<String> args;
args.push_back(p_uri);
// Agnostic
ok = execute("xdg-open", args, nullptr, &err_code);
if (ok == OK && !err_code) {
return OK;
} else if (err_code == 2) {
return ERR_FILE_NOT_FOUND;
}
// GNOME
args.push_front("open"); // The command is `gio open`, so we need to add it to args
ok = execute("gio", args, nullptr, &err_code);
if (ok == OK && !err_code) {
return OK;
} else if (err_code == 2) {
return ERR_FILE_NOT_FOUND;
}
args.pop_front();
ok = execute("gvfs-open", args, nullptr, &err_code);
if (ok == OK && !err_code) {
return OK;
} else if (err_code == 2) {
return ERR_FILE_NOT_FOUND;
}
// KDE
ok = execute("kde-open5", args, nullptr, &err_code);
if (ok == OK && !err_code) {
return OK;
}
ok = execute("kde-open", args, nullptr, &err_code);
return !err_code ? ok : FAILED;
}
bool OS_LinuxBSD::_check_internal_feature_support(const String &p_feature) {
return p_feature == "pc";
}
uint64_t OS_LinuxBSD::get_embedded_pck_offset() const {
Ref<FileAccess> f = FileAccess::open(get_executable_path(), FileAccess::READ);
if (f.is_null()) {
return 0;
}
// Read and check ELF magic number.
{
uint32_t magic = f->get_32();
if (magic != 0x464c457f) { // 0x7F + "ELF"
return 0;
}
}
// Read program architecture bits from class field.
int bits = f->get_8() * 32;
// Get info about the section header table.
int64_t section_table_pos;
int64_t section_header_size;
if (bits == 32) {
section_header_size = 40;
f->seek(0x20);
section_table_pos = f->get_32();
f->seek(0x30);
} else { // 64
section_header_size = 64;
f->seek(0x28);
section_table_pos = f->get_64();
f->seek(0x3c);
}
int num_sections = f->get_16();
int string_section_idx = f->get_16();
// Load the strings table.
uint8_t *strings;
{
// Jump to the strings section header.
f->seek(section_table_pos + string_section_idx * section_header_size);
// Read strings data size and offset.
int64_t string_data_pos;
int64_t string_data_size;
if (bits == 32) {
f->seek(f->get_position() + 0x10);
string_data_pos = f->get_32();
string_data_size = f->get_32();
} else { // 64
f->seek(f->get_position() + 0x18);
string_data_pos = f->get_64();
string_data_size = f->get_64();
}
// Read strings data.
f->seek(string_data_pos);
strings = (uint8_t *)memalloc(string_data_size);
if (!strings) {
return 0;
}
f->get_buffer(strings, string_data_size);
}
// Search for the "pck" section.
int64_t off = 0;
for (int i = 0; i < num_sections; ++i) {
int64_t section_header_pos = section_table_pos + i * section_header_size;
f->seek(section_header_pos);
uint32_t name_offset = f->get_32();
if (strcmp((char *)strings + name_offset, "pck") == 0) {
if (bits == 32) {
f->seek(section_header_pos + 0x10);
off = f->get_32();
} else { // 64
f->seek(section_header_pos + 0x18);
off = f->get_64();
}
break;
}
}
memfree(strings);
return off;
}
String OS_LinuxBSD::get_config_path() const {
if (has_environment("XDG_CONFIG_HOME")) {
if (get_environment("XDG_CONFIG_HOME").is_absolute_path()) {
return get_environment("XDG_CONFIG_HOME");
} else {
WARN_PRINT_ONCE("`XDG_CONFIG_HOME` is a relative path. Ignoring its value and falling back to `$HOME/.config` or `.` per the XDG Base Directory specification.");
return has_environment("HOME") ? get_environment("HOME").plus_file(".config") : ".";
}
} else if (has_environment("HOME")) {
return get_environment("HOME").plus_file(".config");
} else {
return ".";
}
}
String OS_LinuxBSD::get_data_path() const {
if (has_environment("XDG_DATA_HOME")) {
if (get_environment("XDG_DATA_HOME").is_absolute_path()) {
return get_environment("XDG_DATA_HOME");
} else {
WARN_PRINT_ONCE("`XDG_DATA_HOME` is a relative path. Ignoring its value and falling back to `$HOME/.local/share` or `get_config_path()` per the XDG Base Directory specification.");
return has_environment("HOME") ? get_environment("HOME").plus_file(".local/share") : get_config_path();
}
} else if (has_environment("HOME")) {
return get_environment("HOME").plus_file(".local/share");
} else {
return get_config_path();
}
}
String OS_LinuxBSD::get_cache_path() const {
if (has_environment("XDG_CACHE_HOME")) {
if (get_environment("XDG_CACHE_HOME").is_absolute_path()) {
return get_environment("XDG_CACHE_HOME");
} else {
WARN_PRINT_ONCE("`XDG_CACHE_HOME` is a relative path. Ignoring its value and falling back to `$HOME/.cache` or `get_config_path()` per the XDG Base Directory specification.");
return has_environment("HOME") ? get_environment("HOME").plus_file(".cache") : get_config_path();
}
} else if (has_environment("HOME")) {
return get_environment("HOME").plus_file(".cache");
} else {
return get_config_path();
}
}
String OS_LinuxBSD::get_system_dir(SystemDir p_dir, bool p_shared_storage) const {
String xdgparam;
switch (p_dir) {
case SYSTEM_DIR_DESKTOP: {
xdgparam = "DESKTOP";
} break;
case SYSTEM_DIR_DCIM: {
xdgparam = "PICTURES";
} break;
case SYSTEM_DIR_DOCUMENTS: {
xdgparam = "DOCUMENTS";
} break;
case SYSTEM_DIR_DOWNLOADS: {
xdgparam = "DOWNLOAD";
} break;
case SYSTEM_DIR_MOVIES: {
xdgparam = "VIDEOS";
} break;
case SYSTEM_DIR_MUSIC: {
xdgparam = "MUSIC";
} break;
case SYSTEM_DIR_PICTURES: {
xdgparam = "PICTURES";
} break;
case SYSTEM_DIR_RINGTONES: {
xdgparam = "MUSIC";
} break;
}
String pipe;
List<String> arg;
arg.push_back(xdgparam);
Error err = const_cast<OS_LinuxBSD *>(this)->execute("xdg-user-dir", arg, &pipe);
if (err != OK) {
return ".";
}
return pipe.strip_edges();
}
void OS_LinuxBSD::run() {
force_quit = false;
if (!main_loop) {
return;
}
main_loop->initialize();
//uint64_t last_ticks=get_ticks_usec();
//int frames=0;
//uint64_t frame=0;
while (!force_quit) {
DisplayServer::get_singleton()->process_events(); // get rid of pending events
#ifdef JOYDEV_ENABLED
joypad->process_joypads();
#endif
if (Main::iteration()) {
break;
}
}
main_loop->finalize();
}
void OS_LinuxBSD::disable_crash_handler() {
crash_handler.disable();
}
bool OS_LinuxBSD::is_disable_crash_handler() const {
return crash_handler.is_disabled();
}
static String get_mountpoint(const String &p_path) {
struct stat s;
if (stat(p_path.utf8().get_data(), &s)) {
return "";
}
#ifdef HAVE_MNTENT
dev_t dev = s.st_dev;
FILE *fd = setmntent("/proc/mounts", "r");
if (!fd) {
return "";
}
struct mntent mnt;
char buf[1024];
size_t buflen = 1024;
while (getmntent_r(fd, &mnt, buf, buflen)) {
if (!stat(mnt.mnt_dir, &s) && s.st_dev == dev) {
endmntent(fd);
return String(mnt.mnt_dir);
}
}
endmntent(fd);
#endif
return "";
}
Error OS_LinuxBSD::move_to_trash(const String &p_path) {
String path = p_path.rstrip("/"); // Strip trailing slash when path points to a directory
int err_code;
List<String> args;
args.push_back(path);
args.push_front("trash"); // The command is `gio trash <file_name>` so we need to add it to args.
Error result = execute("gio", args, nullptr, &err_code); // For GNOME based machines.
if (result == OK && !err_code) {
return OK;
} else if (err_code == 2) {
return ERR_FILE_NOT_FOUND;
}
args.pop_front();
args.push_front("move");
args.push_back("trash:/"); // The command is `kioclient5 move <file_name> trash:/`.
result = execute("kioclient5", args, nullptr, &err_code); // For KDE based machines.
if (result == OK && !err_code) {
return OK;
} else if (err_code == 2) {
return ERR_FILE_NOT_FOUND;
}
args.pop_front();
args.pop_back();
result = execute("gvfs-trash", args, nullptr, &err_code); // For older Linux machines.
if (result == OK && !err_code) {
return OK;
} else if (err_code == 2) {
return ERR_FILE_NOT_FOUND;
}
// If the commands `kioclient5`, `gio` or `gvfs-trash` don't exist on the system we do it manually.
String trash_path = "";
String mnt = get_mountpoint(path);
// If there is a directory "[Mountpoint]/.Trash-[UID], use it as the trash can.
if (!mnt.is_empty()) {
String mountpoint_trash_path(mnt + "/.Trash-" + itos(getuid()));
struct stat s;
if (!stat(mountpoint_trash_path.utf8().get_data(), &s)) {
trash_path = mountpoint_trash_path;
}
}
// Otherwise, if ${XDG_DATA_HOME} is defined, use "${XDG_DATA_HOME}/Trash" as the trash can.
if (trash_path.is_empty()) {
char *dhome = getenv("XDG_DATA_HOME");
if (dhome) {
trash_path = String::utf8(dhome) + "/Trash";
}
}
// Otherwise, if ${HOME} is defined, use "${HOME}/.local/share/Trash" as the trash can.
if (trash_path.is_empty()) {
char *home = getenv("HOME");
if (home) {
trash_path = String::utf8(home) + "/.local/share/Trash";
}
}
// Issue an error if none of the previous locations is appropriate for the trash can.
ERR_FAIL_COND_V_MSG(trash_path.is_empty(), FAILED, "Could not determine the trash can location");
// Create needed directories for decided trash can location.
{
Ref<DirAccess> dir_access = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
Error err = dir_access->make_dir_recursive(trash_path);
// Issue an error if trash can is not created properly.
ERR_FAIL_COND_V_MSG(err != OK, err, "Could not create the trash path \"" + trash_path + "\"");
err = dir_access->make_dir_recursive(trash_path + "/files");
ERR_FAIL_COND_V_MSG(err != OK, err, "Could not create the trash path \"" + trash_path + "/files\"");
err = dir_access->make_dir_recursive(trash_path + "/info");
ERR_FAIL_COND_V_MSG(err != OK, err, "Could not create the trash path \"" + trash_path + "/info\"");
}
// The trash can is successfully created, now we check that we don't exceed our file name length limit.
// If the file name is too long trim it so we can add the identifying number and ".trashinfo".
// Assumes that the file name length limit is 255 characters.
String file_name = path.get_file();
if (file_name.length() > 240) {
file_name = file_name.substr(0, file_name.length() - 15);
}
String dest_path = trash_path + "/files/" + file_name;
struct stat buff;
int id_number = 0;
String fn = file_name;
// Checks if a resource with the same name already exist in the trash can,
// if there is, add an identifying number to our resource's name.
while (stat(dest_path.utf8().get_data(), &buff) == 0) {
id_number++;
// Added a limit to check for identically named files already on the trash can
// if there are too many it could make the editor unresponsive.
ERR_FAIL_COND_V_MSG(id_number > 99, FAILED, "Too many identically named resources already in the trash can.");
fn = file_name + "." + itos(id_number);
dest_path = trash_path + "/files/" + fn;
}
file_name = fn;
String renamed_path = path.get_base_dir() + "/" + file_name;
// Generates the .trashinfo file
OS::Date date = OS::get_singleton()->get_date(false);
OS::Time time = OS::get_singleton()->get_time(false);
String timestamp = vformat("%04d-%02d-%02dT%02d:%02d:", date.year, (int)date.month, date.day, time.hour, time.minute);
timestamp = vformat("%s%02d", timestamp, time.second); // vformat only supports up to 6 arguments.
String trash_info = "[Trash Info]\nPath=" + path.uri_encode() + "\nDeletionDate=" + timestamp + "\n";
{
Error err;
{
Ref<FileAccess> file = FileAccess::open(trash_path + "/info/" + file_name + ".trashinfo", FileAccess::WRITE, &err);
ERR_FAIL_COND_V_MSG(err != OK, err, "Can't create trashinfo file: \"" + trash_path + "/info/" + file_name + ".trashinfo\"");
file->store_string(trash_info);
}
// Rename our resource before moving it to the trash can.
Ref<DirAccess> dir_access = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
err = dir_access->rename(path, renamed_path);
ERR_FAIL_COND_V_MSG(err != OK, err, "Can't rename file \"" + path + "\" to \"" + renamed_path + "\"");
}
// Move the given resource to the trash can.
// Do not use DirAccess:rename() because it can't move files across multiple mountpoints.
List<String> mv_args;
mv_args.push_back(renamed_path);
mv_args.push_back(trash_path + "/files");
{
int retval;
Error err = execute("mv", mv_args, nullptr, &retval);
// Issue an error if "mv" failed to move the given resource to the trash can.
if (err != OK || retval != 0) {
ERR_PRINT("move_to_trash: Could not move the resource \"" + path + "\" to the trash can \"" + trash_path + "/files\"");
Ref<DirAccess> dir_access = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
err = dir_access->rename(renamed_path, path);
ERR_FAIL_COND_V_MSG(err != OK, err, "Could not rename \"" + renamed_path + "\" back to its original name: \"" + path + "\"");
return FAILED;
}
}
return OK;
}
OS_LinuxBSD::OS_LinuxBSD() {
main_loop = nullptr;
force_quit = false;
#ifdef PULSEAUDIO_ENABLED
AudioDriverManager::add_driver(&driver_pulseaudio);
#endif
#ifdef ALSA_ENABLED
AudioDriverManager::add_driver(&driver_alsa);
#endif
#ifdef X11_ENABLED
DisplayServerX11::register_x11_driver();
#endif
}
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