import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/filesystem/GetFileOrDirectoryTask.cpp

@@ -0,0 +1,280 @@
+/* -*- 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 "GetFileOrDirectoryTask.h"
+
+#include "js/Value.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 {
+
+/**
+ * GetFileOrDirectoryTaskChild
+ */
+
+/* static */ already_AddRefed<GetFileOrDirectoryTaskChild>
+GetFileOrDirectoryTaskChild::Create(FileSystemBase* aFileSystem,
+                                    nsIFile* aTargetPath,
+                                    ErrorResult& aRv)
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  MOZ_ASSERT(aFileSystem);
+
+  RefPtr<GetFileOrDirectoryTaskChild> task =
+    new GetFileOrDirectoryTaskChild(aFileSystem, aTargetPath);
+
+  // 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();
+}
+
+GetFileOrDirectoryTaskChild::GetFileOrDirectoryTaskChild(FileSystemBase* aFileSystem,
+                                                         nsIFile* aTargetPath)
+  : FileSystemTaskChildBase(aFileSystem)
+  , mTargetPath(aTargetPath)
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  MOZ_ASSERT(aFileSystem);
+}
+
+GetFileOrDirectoryTaskChild::~GetFileOrDirectoryTaskChild()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+}
+
+already_AddRefed<Promise>
+GetFileOrDirectoryTaskChild::GetPromise()
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  return RefPtr<Promise>(mPromise).forget();
+}
+
+FileSystemParams
+GetFileOrDirectoryTaskChild::GetRequestParams(const nsString& aSerializedDOMPath,
+                                              ErrorResult& aRv) const
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+
+  nsAutoString path;
+  aRv = mTargetPath->GetPath(path);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return FileSystemGetFileOrDirectoryParams();
+  }
+
+  return FileSystemGetFileOrDirectoryParams(aSerializedDOMPath, path);
+}
+
+void
+GetFileOrDirectoryTaskChild::SetSuccessRequestResult(const FileSystemResponseValue& aValue,
+                                                     ErrorResult& aRv)
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  switch (aValue.type()) {
+    case FileSystemResponseValue::TFileSystemFileResponse: {
+      FileSystemFileResponse r = aValue;
+
+      RefPtr<BlobImpl> blobImpl =
+        static_cast<BlobChild*>(r.blobChild())->GetBlobImpl();
+      MOZ_ASSERT(blobImpl);
+
+      mResultFile = File::Create(mFileSystem->GetParentObject(), blobImpl);
+      MOZ_ASSERT(mResultFile);
+      break;
+    }
+    case FileSystemResponseValue::TFileSystemDirectoryResponse: {
+      FileSystemDirectoryResponse r = aValue;
+
+      nsCOMPtr<nsIFile> file;
+      aRv = NS_NewLocalFile(r.realPath(), true, getter_AddRefs(file));
+      if (NS_WARN_IF(aRv.Failed())) {
+        return;
+      }
+
+      mResultDirectory = Directory::Create(mFileSystem->GetParentObject(),
+                                           file, mFileSystem);
+      MOZ_ASSERT(mResultDirectory);
+      break;
+    }
+    default: {
+      NS_RUNTIMEABORT("not reached");
+      break;
+    }
+  }
+}
+
+void
+GetFileOrDirectoryTaskChild::HandlerCallback()
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  if (mFileSystem->IsShutdown()) {
+    mPromise = nullptr;
+    return;
+  }
+
+  if (HasError()) {
+    mPromise->MaybeReject(mErrorValue);
+    mPromise = nullptr;
+    return;
+  }
+
+  if (mResultDirectory) {
+    mPromise->MaybeResolve(mResultDirectory);
+    mResultDirectory = nullptr;
+    mPromise = nullptr;
+    return;
+  }
+
+  MOZ_ASSERT(mResultFile);
+  mPromise->MaybeResolve(mResultFile);
+  mResultFile = nullptr;
+  mPromise = nullptr;
+}
+
+/**
+ * GetFileOrDirectoryTaskParent
+ */
+
+/* static */ already_AddRefed<GetFileOrDirectoryTaskParent>
+GetFileOrDirectoryTaskParent::Create(FileSystemBase* aFileSystem,
+                                     const FileSystemGetFileOrDirectoryParams& aParam,
+                                     FileSystemRequestParent* aParent,
+                                     ErrorResult& aRv)
+{
+  MOZ_ASSERT(XRE_IsParentProcess(), "Only call from parent process!");
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(aFileSystem);
+
+  RefPtr<GetFileOrDirectoryTaskParent> task =
+    new GetFileOrDirectoryTaskParent(aFileSystem, aParam, aParent);
+
+  aRv = NS_NewLocalFile(aParam.realPath(), true,
+                        getter_AddRefs(task->mTargetPath));
+  if (NS_WARN_IF(aRv.Failed())) {
+    return nullptr;
+  }
+
+  return task.forget();
+}
+
+GetFileOrDirectoryTaskParent::GetFileOrDirectoryTaskParent(FileSystemBase* aFileSystem,
+                                                           const FileSystemGetFileOrDirectoryParams& aParam,
+                                                           FileSystemRequestParent* aParent)
+  : FileSystemTaskParentBase(aFileSystem, aParam, aParent)
+  , mIsDirectory(false)
+{
+  MOZ_ASSERT(XRE_IsParentProcess(), "Only call from parent process!");
+  AssertIsOnBackgroundThread();
+  MOZ_ASSERT(aFileSystem);
+}
+
+FileSystemResponseValue
+GetFileOrDirectoryTaskParent::GetSuccessRequestResult(ErrorResult& aRv) const
+{
+  AssertIsOnBackgroundThread();
+
+  nsAutoString path;
+  aRv = mTargetPath->GetPath(path);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return FileSystemDirectoryResponse();
+  }
+
+  if (mIsDirectory) {
+    return FileSystemDirectoryResponse(path);
+  }
+
+  RefPtr<BlobImpl> blobImpl = new BlobImplFile(mTargetPath);
+  BlobParent* blobParent =
+    BlobParent::GetOrCreate(mRequestParent->Manager(), blobImpl);
+  return FileSystemFileResponse(blobParent, nullptr);
+}
+
+nsresult
+GetFileOrDirectoryTaskParent::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;
+  }
+
+  // Whether we want to get the root directory.
+  bool exists;
+  nsresult rv = mTargetPath->Exists(&exists);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (!exists) {
+    if (!mFileSystem->ShouldCreateDirectory()) {
+      return NS_ERROR_DOM_FILE_NOT_FOUND_ERR;
+    }
+
+    rv = mTargetPath->Create(nsIFile::DIRECTORY_TYPE, 0777);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return rv;
+    }
+  }
+
+  // Get isDirectory.
+  rv = mTargetPath->IsDirectory(&mIsDirectory);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (mIsDirectory) {
+    return NS_OK;
+  }
+
+  bool isFile;
+  // Get isFile
+  rv = mTargetPath->IsFile(&isFile);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (!isFile) {
+    // Neither directory or file.
+    return NS_ERROR_DOM_FILESYSTEM_TYPE_MISMATCH_ERR;
+  }
+
+  if (!mFileSystem->IsSafeFile(mTargetPath)) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  return NS_OK;
+}
+
+nsresult
+GetFileOrDirectoryTaskParent::GetTargetPath(nsAString& aPath) const
+{
+  return mTargetPath->GetPath(aPath);
+}
+
+} // namespace dom
+} // namespace mozilla