The Tor Browser: dom/filesystem/RemoveTask.cpp@b8a032363ba2 (annotated)

dom/filesystem/RemoveTask.cpp@b8a032363ba2 (annotated)

dom/filesystem/RemoveTask.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- 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

The Tor Browser / annotate

dom/filesystem/RemoveTask.cpp@b8a032363ba2 (annotated)

dom/filesystem/RemoveTask.cpp