gecko-dev/dom/filesystem/FileSystemBase.cpp

129 строки
3.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/FileSystemBase.h"
#include "DeviceStorageFileSystem.h"
#include "nsCharSeparatedTokenizer.h"
#include "OSFileSystem.h"
namespace mozilla {
namespace dom {
// static
already_AddRefed<FileSystemBase>
FileSystemBase::FromString(const nsAString& aString)
{
if (StringBeginsWith(aString, NS_LITERAL_STRING("devicestorage-"))) {
// The string representation of devicestorage file system is of the format:
// devicestorage-StorageType-StorageName
nsCharSeparatedTokenizer tokenizer(aString, char16_t('-'));
tokenizer.nextToken();
nsString storageType;
if (tokenizer.hasMoreTokens()) {
storageType = tokenizer.nextToken();
}
nsString storageName;
if (tokenizer.hasMoreTokens()) {
storageName = tokenizer.nextToken();
}
RefPtr<DeviceStorageFileSystem> f =
new DeviceStorageFileSystem(storageType, storageName);
return f.forget();
}
return RefPtr<OSFileSystem>(new OSFileSystem(aString)).forget();
}
FileSystemBase::FileSystemBase()
: mShutdown(false)
, mRequiresPermissionChecks(true)
{
}
FileSystemBase::~FileSystemBase()
{
}
void
FileSystemBase::Shutdown()
{
mShutdown = true;
}
nsPIDOMWindow*
FileSystemBase::GetWindow() const
{
return nullptr;
}
already_AddRefed<nsIFile>
FileSystemBase::GetLocalFile(const nsAString& aRealPath) const
{
MOZ_ASSERT(XRE_IsParentProcess(),
"Should be on parent process!");
nsAutoString localPath;
FileSystemUtils::NormalizedPathToLocalPath(aRealPath, localPath);
localPath = mLocalRootPath + localPath;
nsCOMPtr<nsIFile> file;
nsresult rv = NS_NewLocalFile(localPath, false, getter_AddRefs(file));
if (NS_WARN_IF(NS_FAILED(rv))) {
return nullptr;
}
return file.forget();
}
bool
FileSystemBase::GetRealPath(BlobImpl* aFile, nsAString& aRealPath) const
{
MOZ_ASSERT(XRE_IsParentProcess(),
"Should be on parent process!");
MOZ_ASSERT(aFile, "aFile Should not be null.");
aRealPath.Truncate();
nsAutoString filePath;
ErrorResult rv;
aFile->GetMozFullPathInternal(filePath, rv);
if (NS_WARN_IF(rv.Failed())) {
return false;
}
return LocalPathToRealPath(filePath, aRealPath);
}
bool
FileSystemBase::IsSafeFile(nsIFile* aFile) const
{
return false;
}
bool
FileSystemBase::IsSafeDirectory(Directory* aDir) const
{
return false;
}
bool
FileSystemBase::LocalPathToRealPath(const nsAString& aLocalPath,
nsAString& aRealPath) const
{
nsAutoString path;
FileSystemUtils::LocalPathToNormalizedPath(aLocalPath, path);
if (!FileSystemUtils::IsDescendantPath(mNormalizedLocalRootPath, path)) {
aRealPath.Truncate();
return false;
}
aRealPath = Substring(path, mNormalizedLocalRootPath.Length());
return true;
}
} // namespace dom
} // namespace mozilla