gecko-dev/dom/filesystem/RemoveTask.cpp

259 строки
6.4 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 "RemoveTask.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/FileSystemBase.h"
#include "mozilla/dom/FileSystemUtils.h"
#include "mozilla/dom/PFileSystemParams.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/ipc/BlobChild.h"
#include "mozilla/dom/ipc/BlobParent.h"
#include "nsIFile.h"
#include "nsStringGlue.h"
namespace mozilla {
namespace dom {
/**
* RemoveTaskChild
*/
/* static */ already_AddRefed<RemoveTaskChild>
RemoveTaskChild::Create(FileSystemBase* aFileSystem,
nsIFile* aDirPath,
nsIFile* aTargetPath,
bool aRecursive,
ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
MOZ_ASSERT(aFileSystem);
MOZ_ASSERT(aDirPath);
MOZ_ASSERT(aTargetPath);
RefPtr<RemoveTaskChild> task =
new RemoveTaskChild(aFileSystem, aDirPath, aTargetPath, aRecursive);
// aTargetPath can be null. In this case SetError will be called.
nsCOMPtr<nsIGlobalObject> globalObject =
do_QueryInterface(aFileSystem->GetParentObject());
if (NS_WARN_IF(!globalObject)) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
task->mPromise = Promise::Create(globalObject, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
return task.forget();
}
RemoveTaskChild::RemoveTaskChild(FileSystemBase* aFileSystem,
nsIFile* aDirPath,
nsIFile* aTargetPath,
bool aRecursive)
: FileSystemTaskChildBase(aFileSystem)
, mDirPath(aDirPath)
, mTargetPath(aTargetPath)
, mRecursive(aRecursive)
, mReturnValue(false)
{
MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
MOZ_ASSERT(aFileSystem);
MOZ_ASSERT(aDirPath);
MOZ_ASSERT(aTargetPath);
}
RemoveTaskChild::~RemoveTaskChild()
{
MOZ_ASSERT(NS_IsMainThread());
}
already_AddRefed<Promise>
RemoveTaskChild::GetPromise()
{
MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
return RefPtr<Promise>(mPromise).forget();
}
FileSystemParams
RemoveTaskChild::GetRequestParams(const nsString& aSerializedDOMPath,
ErrorResult& aRv) const
{
MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
FileSystemRemoveParams param;
param.filesystem() = aSerializedDOMPath;
aRv = mDirPath->GetPath(param.directory());
if (NS_WARN_IF(aRv.Failed())) {
return param;
}
param.recursive() = mRecursive;
nsAutoString path;
aRv = mTargetPath->GetPath(path);
if (NS_WARN_IF(aRv.Failed())) {
return param;
}
param.targetDirectory() = path;
return param;
}
void
RemoveTaskChild::SetSuccessRequestResult(const FileSystemResponseValue& aValue,
ErrorResult& aRv)
{
MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
FileSystemBooleanResponse r = aValue;
mReturnValue = r.success();
}
void
RemoveTaskChild::HandlerCallback()
{
MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
if (mFileSystem->IsShutdown()) {
mPromise = nullptr;
return;
}
if (HasError()) {
mPromise->MaybeReject(mErrorValue);
mPromise = nullptr;
return;
}
mPromise->MaybeResolve(mReturnValue);
mPromise = nullptr;
}
void
RemoveTaskChild::GetPermissionAccessType(nsCString& aAccess) const
{
aAccess.AssignLiteral(DIRECTORY_WRITE_PERMISSION);
}
/**
* RemoveTaskParent
*/
/* static */ already_AddRefed<RemoveTaskParent>
RemoveTaskParent::Create(FileSystemBase* aFileSystem,
const FileSystemRemoveParams& aParam,
FileSystemRequestParent* aParent,
ErrorResult& aRv)
{
MOZ_ASSERT(XRE_IsParentProcess(), "Only call from parent process!");
AssertIsOnBackgroundThread();
MOZ_ASSERT(aFileSystem);
RefPtr<RemoveTaskParent> task =
new RemoveTaskParent(aFileSystem, aParam, aParent);
aRv = NS_NewLocalFile(aParam.directory(), true,
getter_AddRefs(task->mDirPath));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
task->mRecursive = aParam.recursive();
aRv = NS_NewLocalFile(aParam.targetDirectory(), true,
getter_AddRefs(task->mTargetPath));
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
if (!FileSystemUtils::IsDescendantPath(task->mDirPath, task->mTargetPath)) {
aRv.Throw(NS_ERROR_DOM_FILESYSTEM_NO_MODIFICATION_ALLOWED_ERR);
return nullptr;
}
return task.forget();
}
RemoveTaskParent::RemoveTaskParent(FileSystemBase* aFileSystem,
const FileSystemRemoveParams& aParam,
FileSystemRequestParent* aParent)
: FileSystemTaskParentBase(aFileSystem, aParam, aParent)
, mRecursive(false)
, mReturnValue(false)
{
MOZ_ASSERT(XRE_IsParentProcess(), "Only call from parent process!");
AssertIsOnBackgroundThread();
MOZ_ASSERT(aFileSystem);
}
FileSystemResponseValue
RemoveTaskParent::GetSuccessRequestResult(ErrorResult& aRv) const
{
AssertIsOnBackgroundThread();
return FileSystemBooleanResponse(mReturnValue);
}
nsresult
RemoveTaskParent::IOWork()
{
MOZ_ASSERT(XRE_IsParentProcess(),
"Only call from parent process!");
MOZ_ASSERT(!NS_IsMainThread(), "Only call on worker thread!");
if (mFileSystem->IsShutdown()) {
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(FileSystemUtils::IsDescendantPath(mDirPath, mTargetPath));
bool exists = false;
nsresult rv = mTargetPath->Exists(&exists);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (!exists) {
mReturnValue = false;
return NS_OK;
}
bool isFile = false;
rv = mTargetPath->IsFile(&isFile);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (isFile && !mFileSystem->IsSafeFile(mTargetPath)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
rv = mTargetPath->Remove(mRecursive);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
mReturnValue = true;
return NS_OK;
}
void
RemoveTaskParent::GetPermissionAccessType(nsCString& aAccess) const
{
aAccess.AssignLiteral(DIRECTORY_WRITE_PERMISSION);
}
} // namespace dom
} // namespace mozilla