499 lines
12 KiB
C++
499 lines
12 KiB
C++
/*************************************************************************/
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/* dir_access_unix.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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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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 "dir_access_unix.h"
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#if defined(UNIX_ENABLED) || defined(LIBC_FILEIO_ENABLED)
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#include "core/os/memory.h"
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#include "core/string/print_string.h"
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#include "core/templates/list.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef ANDROID_ENABLED
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#include <sys/statvfs.h>
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#endif
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#ifdef HAVE_MNTENT
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#include <mntent.h>
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#endif
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DirAccess *DirAccessUnix::create_fs() {
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return memnew(DirAccessUnix);
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}
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Error DirAccessUnix::list_dir_begin() {
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list_dir_end(); //close any previous dir opening!
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//char real_current_dir_name[2048]; //is this enough?!
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//getcwd(real_current_dir_name,2048);
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//chdir(current_path.utf8().get_data());
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dir_stream = opendir(current_dir.utf8().get_data());
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//chdir(real_current_dir_name);
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if (!dir_stream) {
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return ERR_CANT_OPEN; //error!
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}
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return OK;
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}
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bool DirAccessUnix::file_exists(String p_file) {
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GLOBAL_LOCK_FUNCTION
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if (p_file.is_relative_path()) {
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p_file = current_dir.plus_file(p_file);
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}
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p_file = fix_path(p_file);
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struct stat flags;
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bool success = (stat(p_file.utf8().get_data(), &flags) == 0);
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if (success && S_ISDIR(flags.st_mode)) {
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success = false;
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}
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return success;
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}
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bool DirAccessUnix::dir_exists(String p_dir) {
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GLOBAL_LOCK_FUNCTION
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if (p_dir.is_relative_path()) {
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p_dir = get_current_dir().plus_file(p_dir);
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}
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p_dir = fix_path(p_dir);
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struct stat flags;
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bool success = (stat(p_dir.utf8().get_data(), &flags) == 0);
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return (success && S_ISDIR(flags.st_mode));
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}
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bool DirAccessUnix::is_readable(String p_dir) {
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GLOBAL_LOCK_FUNCTION
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if (p_dir.is_relative_path()) {
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p_dir = get_current_dir().plus_file(p_dir);
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}
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p_dir = fix_path(p_dir);
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return (access(p_dir.utf8().get_data(), R_OK) == 0);
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}
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bool DirAccessUnix::is_writable(String p_dir) {
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GLOBAL_LOCK_FUNCTION
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if (p_dir.is_relative_path()) {
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p_dir = get_current_dir().plus_file(p_dir);
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}
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p_dir = fix_path(p_dir);
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return (access(p_dir.utf8().get_data(), W_OK) == 0);
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}
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uint64_t DirAccessUnix::get_modified_time(String p_file) {
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if (p_file.is_relative_path()) {
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p_file = current_dir.plus_file(p_file);
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}
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p_file = fix_path(p_file);
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struct stat flags;
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bool success = (stat(p_file.utf8().get_data(), &flags) == 0);
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if (success) {
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return flags.st_mtime;
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} else {
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ERR_FAIL_V(0);
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};
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return 0;
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};
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String DirAccessUnix::get_next() {
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if (!dir_stream) {
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return "";
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}
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dirent *entry = readdir(dir_stream);
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if (entry == nullptr) {
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list_dir_end();
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return "";
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}
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String fname = fix_unicode_name(entry->d_name);
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// Look at d_type to determine if the entry is a directory, unless
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// its type is unknown (the file system does not support it) or if
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// the type is a link, in that case we want to resolve the link to
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// known if it points to a directory. stat() will resolve the link
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// for us.
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if (entry->d_type == DT_UNKNOWN || entry->d_type == DT_LNK) {
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String f = current_dir.plus_file(fname);
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struct stat flags;
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if (stat(f.utf8().get_data(), &flags) == 0) {
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_cisdir = S_ISDIR(flags.st_mode);
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} else {
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_cisdir = false;
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}
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} else {
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_cisdir = (entry->d_type == DT_DIR);
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}
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_cishidden = is_hidden(fname);
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return fname;
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}
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bool DirAccessUnix::current_is_dir() const {
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return _cisdir;
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}
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bool DirAccessUnix::current_is_hidden() const {
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return _cishidden;
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}
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void DirAccessUnix::list_dir_end() {
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if (dir_stream) {
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closedir(dir_stream);
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}
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dir_stream = nullptr;
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_cisdir = false;
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}
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#if defined(HAVE_MNTENT) && defined(X11_ENABLED)
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static bool _filter_drive(struct mntent *mnt) {
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// Ignore devices that don't point to /dev
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if (strncmp(mnt->mnt_fsname, "/dev", 4) != 0) {
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return false;
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}
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// Accept devices mounted at common locations
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if (strncmp(mnt->mnt_dir, "/media", 6) == 0 ||
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strncmp(mnt->mnt_dir, "/mnt", 4) == 0 ||
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strncmp(mnt->mnt_dir, "/home", 5) == 0 ||
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strncmp(mnt->mnt_dir, "/run/media", 10) == 0) {
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return true;
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}
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// Ignore everything else
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return false;
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}
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#endif
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static void _get_drives(List<String> *list) {
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#if defined(HAVE_MNTENT) && defined(X11_ENABLED)
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// Check /etc/mtab for the list of mounted partitions
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FILE *mtab = setmntent("/etc/mtab", "r");
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if (mtab) {
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struct mntent mnt;
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char strings[4096];
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while (getmntent_r(mtab, &mnt, strings, sizeof(strings))) {
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if (mnt.mnt_dir != nullptr && _filter_drive(&mnt)) {
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// Avoid duplicates
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String name = String::utf8(mnt.mnt_dir);
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if (!list->find(name)) {
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list->push_back(name);
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}
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}
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}
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endmntent(mtab);
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}
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#endif
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// Add $HOME
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const char *home = getenv("HOME");
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if (home) {
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// Only add if it's not a duplicate
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String home_name = String::utf8(home);
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if (!list->find(home_name)) {
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list->push_back(home_name);
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}
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// Check $HOME/.config/gtk-3.0/bookmarks
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char path[1024];
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snprintf(path, 1024, "%s/.config/gtk-3.0/bookmarks", home);
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FILE *fd = fopen(path, "r");
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if (fd) {
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char string[1024];
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while (fgets(string, 1024, fd)) {
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// Parse only file:// links
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if (strncmp(string, "file://", 7) == 0) {
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// Strip any unwanted edges on the strings and push_back if it's not a duplicate
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String fpath = String::utf8(string + 7).strip_edges().split_spaces()[0].uri_decode();
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if (!list->find(fpath)) {
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list->push_back(fpath);
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}
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}
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}
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fclose(fd);
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}
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}
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list->sort();
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}
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int DirAccessUnix::get_drive_count() {
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List<String> list;
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_get_drives(&list);
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return list.size();
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}
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String DirAccessUnix::get_drive(int p_drive) {
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List<String> list;
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_get_drives(&list);
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ERR_FAIL_INDEX_V(p_drive, list.size(), "");
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return list[p_drive];
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}
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bool DirAccessUnix::drives_are_shortcuts() {
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return true;
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}
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Error DirAccessUnix::make_dir(String p_dir) {
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GLOBAL_LOCK_FUNCTION
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if (p_dir.is_relative_path()) {
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p_dir = get_current_dir().plus_file(p_dir);
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}
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p_dir = fix_path(p_dir);
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bool success = (mkdir(p_dir.utf8().get_data(), S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH) == 0);
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int err = errno;
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if (success) {
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return OK;
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};
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if (err == EEXIST) {
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return ERR_ALREADY_EXISTS;
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};
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return ERR_CANT_CREATE;
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}
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Error DirAccessUnix::change_dir(String p_dir) {
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GLOBAL_LOCK_FUNCTION
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p_dir = fix_path(p_dir);
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// prev_dir is the directory we are changing out of
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String prev_dir;
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char real_current_dir_name[2048];
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ERR_FAIL_COND_V(getcwd(real_current_dir_name, 2048) == nullptr, ERR_BUG);
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if (prev_dir.parse_utf8(real_current_dir_name)) {
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prev_dir = real_current_dir_name; //no utf8, maybe latin?
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}
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// try_dir is the directory we are trying to change into
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String try_dir = "";
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if (p_dir.is_relative_path()) {
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String next_dir = current_dir.plus_file(p_dir);
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next_dir = next_dir.simplify_path();
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try_dir = next_dir;
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} else {
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try_dir = p_dir;
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}
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bool worked = (chdir(try_dir.utf8().get_data()) == 0); // we can only give this utf8
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if (!worked) {
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return ERR_INVALID_PARAMETER;
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}
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String base = _get_root_path();
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if (base != String() && !try_dir.begins_with(base)) {
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ERR_FAIL_COND_V(getcwd(real_current_dir_name, 2048) == nullptr, ERR_BUG);
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String new_dir;
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new_dir.parse_utf8(real_current_dir_name);
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if (!new_dir.begins_with(base)) {
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try_dir = current_dir; //revert
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}
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}
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// the directory exists, so set current_dir to try_dir
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current_dir = try_dir;
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ERR_FAIL_COND_V(chdir(prev_dir.utf8().get_data()) != 0, ERR_BUG);
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return OK;
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}
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String DirAccessUnix::get_current_dir(bool p_include_drive) {
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String base = _get_root_path();
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if (base != "") {
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String bd = current_dir.replace_first(base, "");
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if (bd.begins_with("/")) {
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return _get_root_string() + bd.substr(1, bd.length());
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} else {
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return _get_root_string() + bd;
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}
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}
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return current_dir;
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}
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Error DirAccessUnix::rename(String p_path, String p_new_path) {
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if (p_path.is_relative_path()) {
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p_path = get_current_dir().plus_file(p_path);
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}
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p_path = fix_path(p_path);
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if (p_new_path.is_relative_path()) {
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p_new_path = get_current_dir().plus_file(p_new_path);
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}
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p_new_path = fix_path(p_new_path);
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return ::rename(p_path.utf8().get_data(), p_new_path.utf8().get_data()) == 0 ? OK : FAILED;
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}
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Error DirAccessUnix::remove(String p_path) {
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if (p_path.is_relative_path()) {
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p_path = get_current_dir().plus_file(p_path);
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}
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p_path = fix_path(p_path);
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struct stat flags;
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if ((stat(p_path.utf8().get_data(), &flags) != 0)) {
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return FAILED;
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}
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if (S_ISDIR(flags.st_mode)) {
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return ::rmdir(p_path.utf8().get_data()) == 0 ? OK : FAILED;
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} else {
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return ::unlink(p_path.utf8().get_data()) == 0 ? OK : FAILED;
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}
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}
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bool DirAccessUnix::is_link(String p_file) {
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if (p_file.is_relative_path()) {
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p_file = get_current_dir().plus_file(p_file);
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}
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p_file = fix_path(p_file);
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struct stat flags;
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if ((lstat(p_file.utf8().get_data(), &flags) != 0)) {
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return FAILED;
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}
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return S_ISLNK(flags.st_mode);
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}
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String DirAccessUnix::read_link(String p_file) {
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if (p_file.is_relative_path()) {
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p_file = get_current_dir().plus_file(p_file);
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}
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p_file = fix_path(p_file);
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char buf[256];
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memset(buf, 0, 256);
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ssize_t len = readlink(p_file.utf8().get_data(), buf, sizeof(buf));
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String link;
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if (len > 0) {
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link.parse_utf8(buf, len);
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}
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return link;
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}
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Error DirAccessUnix::create_link(String p_source, String p_target) {
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if (p_target.is_relative_path()) {
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p_target = get_current_dir().plus_file(p_target);
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}
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p_source = fix_path(p_source);
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p_target = fix_path(p_target);
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if (symlink(p_source.utf8().get_data(), p_target.utf8().get_data()) == 0) {
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return OK;
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} else {
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return FAILED;
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}
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}
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uint64_t DirAccessUnix::get_space_left() {
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#ifndef NO_STATVFS
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struct statvfs vfs;
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if (statvfs(current_dir.utf8().get_data(), &vfs) != 0) {
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return 0;
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};
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return (uint64_t)vfs.f_bavail * (uint64_t)vfs.f_frsize;
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#else
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// FIXME: Implement this.
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return 0;
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#endif
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};
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String DirAccessUnix::get_filesystem_type() const {
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return ""; //TODO this should be implemented
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}
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bool DirAccessUnix::is_hidden(const String &p_name) {
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return p_name != "." && p_name != ".." && p_name.begins_with(".");
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}
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DirAccessUnix::DirAccessUnix() {
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dir_stream = nullptr;
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_cisdir = false;
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/* determine drive count */
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// set current directory to an absolute path of the current directory
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char real_current_dir_name[2048];
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ERR_FAIL_COND(getcwd(real_current_dir_name, 2048) == nullptr);
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if (current_dir.parse_utf8(real_current_dir_name)) {
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current_dir = real_current_dir_name;
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}
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change_dir(current_dir);
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}
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DirAccessUnix::~DirAccessUnix() {
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list_dir_end();
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}
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#endif //posix_enabled
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