diff -r 000000000000 -r 6474c204b198 dom/filesystem/RemoveTask.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/filesystem/RemoveTask.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,204 @@
+/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
+/* vim: set ts=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 "DOMError.h"
+#include "mozilla/dom/FileSystemBase.h"
+#include "mozilla/dom/FileSystemUtils.h"
+#include "mozilla/dom/Promise.h"
+#include "nsIDOMFile.h"
+#include "nsIFile.h"
+#include "nsStringGlue.h"
+
+namespace mozilla {
+namespace dom {
+
+RemoveTask::RemoveTask(FileSystemBase* aFileSystem,
+                       const nsAString& aDirPath,
+                       nsIDOMFile* aTargetFile,
+                       const nsAString& aTargetPath,
+                       bool aRecursive)
+  : FileSystemTaskBase(aFileSystem)
+  , mDirRealPath(aDirPath)
+  , mTargetFile(aTargetFile)
+  , mTargetRealPath(aTargetPath)
+  , mRecursive(aRecursive)
+  , mReturnValue(false)
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  MOZ_ASSERT(aFileSystem);
+  nsCOMPtr<nsIGlobalObject> globalObject =
+    do_QueryInterface(aFileSystem->GetWindow());
+  if (!globalObject) {
+    return;
+  }
+  mPromise = new Promise(globalObject);
+}
+
+RemoveTask::RemoveTask(FileSystemBase* aFileSystem,
+                       const FileSystemRemoveParams& aParam,
+                       FileSystemRequestParent* aParent)
+  : FileSystemTaskBase(aFileSystem, aParam, aParent)
+  , mRecursive(false)
+  , mReturnValue(false)
+{
+  MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
+             "Only call from parent process!");
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  MOZ_ASSERT(aFileSystem);
+
+  mDirRealPath = aParam.directory();
+
+  mRecursive = aParam.recursive();
+
+  const FileSystemPathOrFileValue& target = aParam.target();
+
+  if (target.type() == FileSystemPathOrFileValue::TnsString) {
+    mTargetRealPath = target;
+    return;
+  }
+
+  BlobParent* bp = static_cast<BlobParent*>(static_cast<PBlobParent*>(target));
+  nsCOMPtr<nsIDOMBlob> blob = bp->GetBlob();
+  mTargetFile = do_QueryInterface(blob);
+  MOZ_ASSERT(mTargetFile, "mTargetFile should not be null.");
+}
+
+RemoveTask::~RemoveTask()
+{
+  MOZ_ASSERT(!mPromise || NS_IsMainThread(),
+             "mPromise should be released on main thread!");
+}
+
+already_AddRefed<Promise>
+RemoveTask::GetPromise()
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  return nsRefPtr<Promise>(mPromise).forget();
+}
+
+FileSystemParams
+RemoveTask::GetRequestParams(const nsString& aFileSystem) const
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  FileSystemRemoveParams param;
+  param.filesystem() = aFileSystem;
+  param.directory() = mDirRealPath;
+  param.recursive() = mRecursive;
+  if (mTargetFile) {
+    BlobChild* actor
+      = ContentChild::GetSingleton()->GetOrCreateActorForBlob(mTargetFile);
+    if (actor) {
+      param.target() = actor;
+    }
+  } else {
+    param.target() = mTargetRealPath;
+  }
+  return param;
+}
+
+FileSystemResponseValue
+RemoveTask::GetSuccessRequestResult() const
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  return FileSystemBooleanResponse(mReturnValue);
+}
+
+void
+RemoveTask::SetSuccessRequestResult(const FileSystemResponseValue& aValue)
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  FileSystemBooleanResponse r = aValue;
+  mReturnValue = r.success();
+}
+
+nsresult
+RemoveTask::Work()
+{
+  MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
+             "Only call from parent process!");
+  MOZ_ASSERT(!NS_IsMainThread(), "Only call on worker thread!");
+
+  if (mFileSystem->IsShutdown()) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Get the DOM path if a DOMFile is passed as the target.
+  if (mTargetFile) {
+    if (!mFileSystem->GetRealPath(mTargetFile, mTargetRealPath)) {
+      return NS_ERROR_DOM_SECURITY_ERR;
+    }
+    if (!FileSystemUtils::IsDescendantPath(mDirRealPath, mTargetRealPath)) {
+      return NS_ERROR_DOM_FILESYSTEM_NO_MODIFICATION_ALLOWED_ERR;
+    }
+  }
+
+  nsCOMPtr<nsIFile> file = mFileSystem->GetLocalFile(mTargetRealPath);
+  if (!file) {
+    return NS_ERROR_DOM_FILESYSTEM_INVALID_PATH_ERR;
+  }
+
+  bool exists = false;
+  nsresult rv = file->Exists(&exists);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (!exists) {
+    mReturnValue = false;
+    return NS_OK;
+  }
+
+  bool isFile = false;
+  rv = file->IsFile(&isFile);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  if (isFile && !mFileSystem->IsSafeFile(file)) {
+    return NS_ERROR_DOM_SECURITY_ERR;
+  }
+
+  rv = file->Remove(mRecursive);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return rv;
+  }
+
+  mReturnValue = true;
+
+  return NS_OK;
+}
+
+void
+RemoveTask::HandlerCallback()
+{
+  MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
+  if (mFileSystem->IsShutdown()) {
+    mPromise = nullptr;
+    return;
+  }
+
+  if (HasError()) {
+    nsRefPtr<DOMError> domError = new DOMError(mFileSystem->GetWindow(),
+      mErrorValue);
+    mPromise->MaybeReject(domError);
+    mPromise = nullptr;
+    return;
+  }
+
+  mPromise->MaybeResolve(mReturnValue);
+  mPromise = nullptr;
+}
+
+void
+RemoveTask::GetPermissionAccessType(nsCString& aAccess) const
+{
+  aAccess.AssignLiteral("write");
+}
+
+} // namespace dom
+} // namespace mozilla