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- /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #include "FileUtils.h"
- #include <AK/LexicalPath.h>
- #include <AK/ScopeGuard.h>
- #include <AK/StringBuilder.h>
- #include <LibCore/DirIterator.h>
- #include <LibCore/File.h>
- #include <LibGUI/MessageBox.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <sys/stat.h>
- #include <unistd.h>
- namespace FileUtils {
- void delete_paths(const Vector<String>& paths, bool should_confirm, GUI::Window* parent_window)
- {
- String message;
- if (paths.size() == 1) {
- message = String::formatted("Really delete {}?", LexicalPath(paths[0]).basename());
- } else {
- message = String::formatted("Really delete {} files?", paths.size());
- }
- if (should_confirm) {
- auto result = GUI::MessageBox::show(parent_window,
- message,
- "Confirm deletion",
- GUI::MessageBox::Type::Warning,
- GUI::MessageBox::InputType::OKCancel);
- if (result == GUI::MessageBox::ExecCancel)
- return;
- }
- for (auto& path : paths) {
- struct stat st;
- if (lstat(path.characters(), &st)) {
- GUI::MessageBox::show(parent_window,
- String::formatted("lstat({}) failed: {}", path, strerror(errno)),
- "Delete failed",
- GUI::MessageBox::Type::Error);
- break;
- }
- if (S_ISDIR(st.st_mode)) {
- String error_path;
- int error = FileUtils::delete_directory(path, error_path);
- if (error) {
- GUI::MessageBox::show(parent_window,
- String::formatted("Failed to delete directory \"{}\": {}", error_path, strerror(error)),
- "Delete failed",
- GUI::MessageBox::Type::Error);
- break;
- }
- } else if (unlink(path.characters()) < 0) {
- int saved_errno = errno;
- GUI::MessageBox::show(parent_window,
- String::formatted("unlink(\"{}\") failed: {}", path, strerror(saved_errno)),
- "Delete failed",
- GUI::MessageBox::Type::Error);
- break;
- }
- }
- }
- int delete_directory(String directory, String& file_that_caused_error)
- {
- Core::DirIterator iterator(directory, Core::DirIterator::SkipDots);
- if (iterator.has_error()) {
- file_that_caused_error = directory;
- return -1;
- }
- while (iterator.has_next()) {
- auto file_to_delete = String::formatted("{}/{}", directory, iterator.next_path());
- struct stat st;
- if (lstat(file_to_delete.characters(), &st)) {
- file_that_caused_error = file_to_delete;
- return errno;
- }
- if (S_ISDIR(st.st_mode)) {
- if (delete_directory(file_to_delete, file_to_delete)) {
- file_that_caused_error = file_to_delete;
- return errno;
- }
- } else if (unlink(file_to_delete.characters())) {
- file_that_caused_error = file_to_delete;
- return errno;
- }
- }
- if (rmdir(directory.characters())) {
- file_that_caused_error = directory;
- return errno;
- }
- return 0;
- }
- bool copy_file_or_directory(const String& src_path, const String& dst_path)
- {
- int duplicate_count = 0;
- while (access(get_duplicate_name(dst_path, duplicate_count).characters(), F_OK) == 0) {
- ++duplicate_count;
- }
- if (duplicate_count != 0) {
- return copy_file_or_directory(src_path, get_duplicate_name(dst_path, duplicate_count));
- }
- auto source_or_error = Core::File::open(src_path, Core::IODevice::ReadOnly);
- if (source_or_error.is_error())
- return false;
- auto& source = *source_or_error.value();
- struct stat src_stat;
- int rc = fstat(source.fd(), &src_stat);
- if (rc < 0)
- return false;
- if (source.is_directory())
- return copy_directory(src_path, dst_path, src_stat);
- return copy_file(dst_path, src_stat, source);
- }
- bool copy_directory(const String& src_path, const String& dst_path, const struct stat& src_stat)
- {
- int rc = mkdir(dst_path.characters(), 0755);
- if (rc < 0) {
- return false;
- }
- Core::DirIterator di(src_path, Core::DirIterator::SkipDots);
- if (di.has_error()) {
- return false;
- }
- while (di.has_next()) {
- String filename = di.next_path();
- bool is_copied = copy_file_or_directory(
- String::formatted("{}/{}", src_path, filename),
- String::formatted("{}/{}", dst_path, filename));
- if (!is_copied) {
- return false;
- }
- }
- auto my_umask = umask(0);
- umask(my_umask);
- rc = chmod(dst_path.characters(), src_stat.st_mode & ~my_umask);
- if (rc < 0) {
- return false;
- }
- return true;
- }
- bool copy_file(const String& dst_path, const struct stat& src_stat, Core::File& source)
- {
- int dst_fd = creat(dst_path.characters(), 0666);
- if (dst_fd < 0) {
- if (errno != EISDIR) {
- return false;
- }
- auto dst_dir_path = String::formatted("{}/{}", dst_path, LexicalPath(source.filename()).basename());
- dst_fd = creat(dst_dir_path.characters(), 0666);
- if (dst_fd < 0) {
- return false;
- }
- }
- ScopeGuard close_fd_guard([dst_fd]() { close(dst_fd); });
- if (src_stat.st_size > 0) {
- if (ftruncate(dst_fd, src_stat.st_size) < 0) {
- perror("cp: ftruncate");
- return false;
- }
- }
- for (;;) {
- char buffer[32768];
- ssize_t nread = read(source.fd(), buffer, sizeof(buffer));
- if (nread < 0) {
- return false;
- }
- if (nread == 0)
- break;
- ssize_t remaining_to_write = nread;
- char* bufptr = buffer;
- while (remaining_to_write) {
- ssize_t nwritten = write(dst_fd, bufptr, remaining_to_write);
- if (nwritten < 0) {
- return false;
- }
- assert(nwritten > 0);
- remaining_to_write -= nwritten;
- bufptr += nwritten;
- }
- }
- auto my_umask = umask(0);
- umask(my_umask);
- int rc = fchmod(dst_fd, src_stat.st_mode & ~my_umask);
- if (rc < 0) {
- return false;
- }
- return true;
- }
- bool link_file(const String& src_path, const String& dst_path)
- {
- int duplicate_count = 0;
- while (access(get_duplicate_name(dst_path, duplicate_count).characters(), F_OK) == 0) {
- ++duplicate_count;
- }
- if (duplicate_count != 0) {
- return link_file(src_path, get_duplicate_name(dst_path, duplicate_count));
- }
- int rc = symlink(src_path.characters(), dst_path.characters());
- if (rc < 0) {
- return false;
- }
- return true;
- }
- String get_duplicate_name(const String& path, int duplicate_count)
- {
- if (duplicate_count == 0) {
- return path;
- }
- LexicalPath lexical_path(path);
- StringBuilder duplicated_name;
- duplicated_name.append('/');
- for (size_t i = 0; i < lexical_path.parts().size() - 1; ++i) {
- duplicated_name.appendff("{}/", lexical_path.parts()[i]);
- }
- auto prev_duplicate_tag = String::formatted("({})", duplicate_count);
- auto title = lexical_path.title();
- if (title.ends_with(prev_duplicate_tag)) {
- // remove the previous duplicate tag "(n)" so we can add a new tag.
- title = title.substring(0, title.length() - prev_duplicate_tag.length());
- }
- duplicated_name.appendff("{} ({})", lexical_path.title(), duplicate_count);
- if (!lexical_path.extension().is_empty()) {
- duplicated_name.appendff(".{}", lexical_path.extension());
- }
- return duplicated_name.build();
- }
- }
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