michael@0: /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "RemoveTask.h"
michael@0: 
michael@0: #include "DOMError.h"
michael@0: #include "mozilla/dom/FileSystemBase.h"
michael@0: #include "mozilla/dom/FileSystemUtils.h"
michael@0: #include "mozilla/dom/Promise.h"
michael@0: #include "nsIDOMFile.h"
michael@0: #include "nsIFile.h"
michael@0: #include "nsStringGlue.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: RemoveTask::RemoveTask(FileSystemBase* aFileSystem,
michael@0:                        const nsAString& aDirPath,
michael@0:                        nsIDOMFile* aTargetFile,
michael@0:                        const nsAString& aTargetPath,
michael@0:                        bool aRecursive)
michael@0:   : FileSystemTaskBase(aFileSystem)
michael@0:   , mDirRealPath(aDirPath)
michael@0:   , mTargetFile(aTargetFile)
michael@0:   , mTargetRealPath(aTargetPath)
michael@0:   , mRecursive(aRecursive)
michael@0:   , mReturnValue(false)
michael@0: {
michael@0:   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
michael@0:   MOZ_ASSERT(aFileSystem);
michael@0:   nsCOMPtr<nsIGlobalObject> globalObject =
michael@0:     do_QueryInterface(aFileSystem->GetWindow());
michael@0:   if (!globalObject) {
michael@0:     return;
michael@0:   }
michael@0:   mPromise = new Promise(globalObject);
michael@0: }
michael@0: 
michael@0: RemoveTask::RemoveTask(FileSystemBase* aFileSystem,
michael@0:                        const FileSystemRemoveParams& aParam,
michael@0:                        FileSystemRequestParent* aParent)
michael@0:   : FileSystemTaskBase(aFileSystem, aParam, aParent)
michael@0:   , mRecursive(false)
michael@0:   , mReturnValue(false)
michael@0: {
michael@0:   MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
michael@0:              "Only call from parent process!");
michael@0:   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
michael@0:   MOZ_ASSERT(aFileSystem);
michael@0: 
michael@0:   mDirRealPath = aParam.directory();
michael@0: 
michael@0:   mRecursive = aParam.recursive();
michael@0: 
michael@0:   const FileSystemPathOrFileValue& target = aParam.target();
michael@0: 
michael@0:   if (target.type() == FileSystemPathOrFileValue::TnsString) {
michael@0:     mTargetRealPath = target;
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   BlobParent* bp = static_cast<BlobParent*>(static_cast<PBlobParent*>(target));
michael@0:   nsCOMPtr<nsIDOMBlob> blob = bp->GetBlob();
michael@0:   mTargetFile = do_QueryInterface(blob);
michael@0:   MOZ_ASSERT(mTargetFile, "mTargetFile should not be null.");
michael@0: }
michael@0: 
michael@0: RemoveTask::~RemoveTask()
michael@0: {
michael@0:   MOZ_ASSERT(!mPromise || NS_IsMainThread(),
michael@0:              "mPromise should be released on main thread!");
michael@0: }
michael@0: 
michael@0: already_AddRefed<Promise>
michael@0: RemoveTask::GetPromise()
michael@0: {
michael@0:   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
michael@0:   return nsRefPtr<Promise>(mPromise).forget();
michael@0: }
michael@0: 
michael@0: FileSystemParams
michael@0: RemoveTask::GetRequestParams(const nsString& aFileSystem) const
michael@0: {
michael@0:   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
michael@0:   FileSystemRemoveParams param;
michael@0:   param.filesystem() = aFileSystem;
michael@0:   param.directory() = mDirRealPath;
michael@0:   param.recursive() = mRecursive;
michael@0:   if (mTargetFile) {
michael@0:     BlobChild* actor
michael@0:       = ContentChild::GetSingleton()->GetOrCreateActorForBlob(mTargetFile);
michael@0:     if (actor) {
michael@0:       param.target() = actor;
michael@0:     }
michael@0:   } else {
michael@0:     param.target() = mTargetRealPath;
michael@0:   }
michael@0:   return param;
michael@0: }
michael@0: 
michael@0: FileSystemResponseValue
michael@0: RemoveTask::GetSuccessRequestResult() const
michael@0: {
michael@0:   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
michael@0:   return FileSystemBooleanResponse(mReturnValue);
michael@0: }
michael@0: 
michael@0: void
michael@0: RemoveTask::SetSuccessRequestResult(const FileSystemResponseValue& aValue)
michael@0: {
michael@0:   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
michael@0:   FileSystemBooleanResponse r = aValue;
michael@0:   mReturnValue = r.success();
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: RemoveTask::Work()
michael@0: {
michael@0:   MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
michael@0:              "Only call from parent process!");
michael@0:   MOZ_ASSERT(!NS_IsMainThread(), "Only call on worker thread!");
michael@0: 
michael@0:   if (mFileSystem->IsShutdown()) {
michael@0:     return NS_ERROR_FAILURE;
michael@0:   }
michael@0: 
michael@0:   // Get the DOM path if a DOMFile is passed as the target.
michael@0:   if (mTargetFile) {
michael@0:     if (!mFileSystem->GetRealPath(mTargetFile, mTargetRealPath)) {
michael@0:       return NS_ERROR_DOM_SECURITY_ERR;
michael@0:     }
michael@0:     if (!FileSystemUtils::IsDescendantPath(mDirRealPath, mTargetRealPath)) {
michael@0:       return NS_ERROR_DOM_FILESYSTEM_NO_MODIFICATION_ALLOWED_ERR;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   nsCOMPtr<nsIFile> file = mFileSystem->GetLocalFile(mTargetRealPath);
michael@0:   if (!file) {
michael@0:     return NS_ERROR_DOM_FILESYSTEM_INVALID_PATH_ERR;
michael@0:   }
michael@0: 
michael@0:   bool exists = false;
michael@0:   nsresult rv = file->Exists(&exists);
michael@0:   if (NS_WARN_IF(NS_FAILED(rv))) {
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   if (!exists) {
michael@0:     mReturnValue = false;
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   bool isFile = false;
michael@0:   rv = file->IsFile(&isFile);
michael@0:   if (NS_WARN_IF(NS_FAILED(rv))) {
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   if (isFile && !mFileSystem->IsSafeFile(file)) {
michael@0:     return NS_ERROR_DOM_SECURITY_ERR;
michael@0:   }
michael@0: 
michael@0:   rv = file->Remove(mRecursive);
michael@0:   if (NS_WARN_IF(NS_FAILED(rv))) {
michael@0:     return rv;
michael@0:   }
michael@0: 
michael@0:   mReturnValue = true;
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: RemoveTask::HandlerCallback()
michael@0: {
michael@0:   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
michael@0:   if (mFileSystem->IsShutdown()) {
michael@0:     mPromise = nullptr;
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (HasError()) {
michael@0:     nsRefPtr<DOMError> domError = new DOMError(mFileSystem->GetWindow(),
michael@0:       mErrorValue);
michael@0:     mPromise->MaybeReject(domError);
michael@0:     mPromise = nullptr;
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   mPromise->MaybeResolve(mReturnValue);
michael@0:   mPromise = nullptr;
michael@0: }
michael@0: 
michael@0: void
michael@0: RemoveTask::GetPermissionAccessType(nsCString& aAccess) const
michael@0: {
michael@0:   aAccess.AssignLiteral("write");
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla