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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/filesystem/directory_impl.h"
#include "base/files/file.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "build/build_config.h"
#include "components/filesystem/file_impl.h"
#include "components/filesystem/util.h"
namespace filesystem {
DirectoryImpl::DirectoryImpl(mojo::InterfaceRequest<Directory> request,
base::FilePath directory_path,
scoped_ptr<base::ScopedTempDir> temp_dir)
: binding_(this, request.Pass()),
directory_path_(directory_path),
temp_dir_(temp_dir.Pass()) {
}
DirectoryImpl::~DirectoryImpl() {
}
void DirectoryImpl::Read(const ReadCallback& callback) {
mojo::Array<DirectoryEntryPtr> entries(0);
base::FileEnumerator directory_enumerator(
directory_path_, false,
base::FileEnumerator::DIRECTORIES | base::FileEnumerator::FILES);
for (base::FilePath name = directory_enumerator.Next(); !name.empty();
name = directory_enumerator.Next()) {
base::FileEnumerator::FileInfo info = directory_enumerator.GetInfo();
DirectoryEntryPtr entry = DirectoryEntry::New();
entry->type = info.IsDirectory()
? FS_FILE_TYPE_DIRECTORY : FS_FILE_TYPE_REGULAR_FILE;
entry->name = info.GetName().AsUTF8Unsafe();
entries.push_back(entry.Pass());
}
callback.Run(FILE_ERROR_OK, entries.Pass());
}
// TODO(erg): Consider adding an implementation of Stat()/Touch() to the
// directory, too. Right now, the base::File abstractions do not really deal
// with directories properly, so these are broken for now.
// TODO(vtl): Move the implementation to a thread pool.
void DirectoryImpl::OpenFile(const mojo::String& raw_path,
mojo::InterfaceRequest<File> file,
uint32_t open_flags,
const OpenFileCallback& callback) {
base::FilePath path;
if (FileError error = ValidatePath(raw_path, directory_path_, &path)) {
callback.Run(error);
return;
}
#if defined(OS_WIN)
// On Windows, FILE_FLAG_BACKUP_SEMANTICS is needed to open a directory.
if (DirectoryExists(path))
open_flags |= base::File::FLAG_BACKUP_SEMANTICS;
#endif // OS_WIN
base::File base_file(path, open_flags);
if (!base_file.IsValid()) {
callback.Run(FILE_ERROR_FAILED);
return;
}
base::File::Info info;
if (!base_file.GetInfo(&info)) {
callback.Run(FILE_ERROR_FAILED);
return;
}
if (info.is_directory) {
// We must not return directories as files. In the file abstraction, we can
// fetch raw file descriptors over mojo pipes, and passing a file
// descriptor to a directory is a sandbox escape on Windows.
callback.Run(FILE_ERROR_NOT_A_FILE);
return;
}
if (file.is_pending()) {
new FileImpl(file.Pass(), base_file.Pass());
}
callback.Run(FILE_ERROR_OK);
}
void DirectoryImpl::OpenDirectory(const mojo::String& raw_path,
mojo::InterfaceRequest<Directory> directory,
uint32_t open_flags,
const OpenDirectoryCallback& callback) {
base::FilePath path;
if (FileError error = ValidatePath(raw_path, directory_path_, &path)) {
callback.Run(error);
return;
}
if (!base::DirectoryExists(path)) {
if (base::PathExists(path)) {
callback.Run(FILE_ERROR_NOT_A_DIRECTORY);
return;
}
if (!(open_flags & kFlagOpenAlways || open_flags & kFlagCreate)) {
// The directory doesn't exist, and we weren't passed parameters to
// create it.
callback.Run(FILE_ERROR_NOT_FOUND);
return;
}
base::File::Error error;
if (!base::CreateDirectoryAndGetError(path, &error)) {
callback.Run(static_cast<filesystem::FileError>(error));
return;
}
}
if (directory.is_pending())
new DirectoryImpl(directory.Pass(), path,
scoped_ptr<base::ScopedTempDir>());
callback.Run(FILE_ERROR_OK);
}
void DirectoryImpl::Rename(const mojo::String& raw_old_path,
const mojo::String& raw_new_path,
const RenameCallback& callback) {
base::FilePath old_path;
if (FileError error =
ValidatePath(raw_old_path, directory_path_, &old_path)) {
callback.Run(error);
return;
}
base::FilePath new_path;
if (FileError error =
ValidatePath(raw_new_path, directory_path_, &new_path)) {
callback.Run(error);
return;
}
if (!base::Move(old_path, new_path)) {
callback.Run(FILE_ERROR_FAILED);
return;
}
callback.Run(FILE_ERROR_OK);
}
void DirectoryImpl::Delete(const mojo::String& raw_path,
uint32_t delete_flags,
const DeleteCallback& callback) {
base::FilePath path;
if (FileError error = ValidatePath(raw_path, directory_path_, &path)) {
callback.Run(error);
return;
}
bool recursive = delete_flags & kDeleteFlagRecursive;
if (!base::DeleteFile(path, recursive)) {
callback.Run(FILE_ERROR_FAILED);
return;
}
callback.Run(FILE_ERROR_OK);
}
void DirectoryImpl::Exists(const mojo::String& raw_path,
const ExistsCallback& callback) {
base::FilePath path;
if (FileError error = ValidatePath(raw_path, directory_path_, &path)) {
callback.Run(error, false);
return;
}
bool exists = base::PathExists(path);
callback.Run(FILE_ERROR_OK, exists);
}
void DirectoryImpl::IsWritable(const mojo::String& raw_path,
const IsWritableCallback& callback) {
base::FilePath path;
if (FileError error = ValidatePath(raw_path, directory_path_, &path)) {
callback.Run(error, false);
return;
}
callback.Run(FILE_ERROR_OK, base::PathIsWritable(path));
}
void DirectoryImpl::Flush(const FlushCallback& callback) {
base::File file(directory_path_, base::File::FLAG_READ);
if (!file.IsValid()) {
callback.Run(FILE_ERROR_FAILED);
return;
}
if (!file.Flush()) {
callback.Run(FILE_ERROR_FAILED);
return;
}
callback.Run(FILE_ERROR_OK);
}
} // namespace filesystem
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