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

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

dom/filesystem/FileSystemTaskBase.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 "mozilla/dom/FileSystemTaskBase.h"
 #include "nsNetUtil.h" // Stream transport service.
 #include "mozilla/dom/ContentChild.h"
 #include "mozilla/dom/FileSystemBase.h"
 #include "mozilla/dom/FileSystemRequestParent.h"
 #include "mozilla/dom/FileSystemUtils.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/PContent.h"
 #include "mozilla/unused.h"
 #include "nsDOMFile.h"
 namespace mozilla {
 namespace dom {
 FileSystemTaskBase::FileSystemTaskBase(FileSystemBase* aFileSystem)
   : mErrorValue(NS_OK)
   , mFileSystem(aFileSystem)
 {
   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
   MOZ_ASSERT(aFileSystem, "aFileSystem should not be null.");
 }
 FileSystemTaskBase::FileSystemTaskBase(FileSystemBase* aFileSystem,
                                        const FileSystemParams& aParam,
                                        FileSystemRequestParent* aParent)
   : mErrorValue(NS_OK)
   , mFileSystem(aFileSystem)
   , mRequestParent(aParent)
 {
   MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
              "Only call from parent process!");
   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
   MOZ_ASSERT(aFileSystem, "aFileSystem should not be null.");
 }
 FileSystemTaskBase::~FileSystemTaskBase()
 {
 }
 FileSystemBase*
 FileSystemTaskBase::GetFileSystem() const
 {
   return mFileSystem.get();
 }
 void
 FileSystemTaskBase::Start()
 {
   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
   if (HasError()) {
     NS_DispatchToMainThread(this);
     return;
   }
   if (FileSystemUtils::IsParentProcess()) {
     // Run in parent process.
     // Start worker thread.
     nsCOMPtr<nsIEventTarget> target
       = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
     NS_ASSERTION(target, "Must have stream transport service.");
     target->Dispatch(this, NS_DISPATCH_NORMAL);
     return;
   }
   // Run in child process.
   if (mFileSystem->IsShutdown()) {
     return;
   }
   // Retain a reference so the task object isn't deleted without IPDL's
   // knowledge. The reference will be released by
   // mozilla::dom::ContentChild::DeallocPFileSystemRequestChild.
   NS_ADDREF_THIS();
   ContentChild::GetSingleton()->SendPFileSystemRequestConstructor(this,
     GetRequestParams(mFileSystem->ToString()));
 }
 NS_IMETHODIMP
 FileSystemTaskBase::Run()
 {
   if (!NS_IsMainThread()) {
     // Run worker thread tasks
     nsresult rv = Work();
     if (NS_FAILED(rv)) {
       SetError(rv);
     }
     // Dispatch itself to main thread
     NS_DispatchToMainThread(this);
     return NS_OK;
   }
   // Run main thread tasks
   HandleResult();
   return NS_OK;
 }
 void
 FileSystemTaskBase::HandleResult()
 {
   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
   if (mFileSystem->IsShutdown()) {
     return;
   }
   if (mRequestParent && mRequestParent->IsRunning()) {
     unused << mRequestParent->Send__delete__(mRequestParent,
       GetRequestResult());
   } else {
     HandlerCallback();
   }
 }
 FileSystemResponseValue
 FileSystemTaskBase::GetRequestResult() const
 {
   MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
              "Only call from parent process!");
   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
   if (HasError()) {
     return FileSystemErrorResponse(mErrorValue);
   } else {
     return GetSuccessRequestResult();
   }
 }
 void
 FileSystemTaskBase::SetRequestResult(const FileSystemResponseValue& aValue)
 {
   MOZ_ASSERT(!FileSystemUtils::IsParentProcess(),
              "Only call from child process!");
   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
   if (aValue.type() == FileSystemResponseValue::TFileSystemErrorResponse) {
     FileSystemErrorResponse r = aValue;
     mErrorValue = r.error();
   } else {
     SetSuccessRequestResult(aValue);
   }
 }
 bool
 FileSystemTaskBase::Recv__delete__(const FileSystemResponseValue& aValue)
 {
   SetRequestResult(aValue);
   HandlerCallback();
   return true;
 }
 BlobParent*
 FileSystemTaskBase::GetBlobParent(nsIDOMFile* aFile) const
 {
   MOZ_ASSERT(FileSystemUtils::IsParentProcess(),
              "Only call from parent process!");
   MOZ_ASSERT(NS_IsMainThread(), "Only call on main thread!");
   MOZ_ASSERT(aFile);
   // Load the lazy dom file data from the parent before sending to the child.
   nsString mimeType;
   aFile->GetType(mimeType);
   uint64_t fileSize;
   aFile->GetSize(&fileSize);
   uint64_t lastModifiedDate;
   aFile->GetMozLastModifiedDate(&lastModifiedDate);
   ContentParent* cp = static_cast<ContentParent*>(mRequestParent->Manager());
   return cp->GetOrCreateActorForBlob(aFile);
 }
 void
 FileSystemTaskBase::SetError(const nsresult& aErrorValue)
 {
   uint16_t module = NS_ERROR_GET_MODULE(aErrorValue);
   if (module == NS_ERROR_MODULE_DOM_FILESYSTEM ||
       module == NS_ERROR_MODULE_DOM_FILE ||
       module == NS_ERROR_MODULE_DOM) {
     mErrorValue = aErrorValue;
     return;
   }
   switch (aErrorValue) {
     case NS_OK:
       mErrorValue = NS_OK;
       return;
     case NS_ERROR_FILE_INVALID_PATH:
     case NS_ERROR_FILE_UNRECOGNIZED_PATH:
       mErrorValue = NS_ERROR_DOM_FILESYSTEM_INVALID_PATH_ERR;
       return;
     case NS_ERROR_FILE_DESTINATION_NOT_DIR:
       mErrorValue = NS_ERROR_DOM_FILESYSTEM_INVALID_MODIFICATION_ERR;
       return;
     case NS_ERROR_FILE_ACCESS_DENIED:
     case NS_ERROR_FILE_DIR_NOT_EMPTY:
       mErrorValue = NS_ERROR_DOM_FILESYSTEM_NO_MODIFICATION_ALLOWED_ERR;
       return;
     case NS_ERROR_FILE_TARGET_DOES_NOT_EXIST:
     case NS_ERROR_NOT_AVAILABLE:
       mErrorValue = NS_ERROR_DOM_FILE_NOT_FOUND_ERR;
       return;
     case NS_ERROR_FILE_ALREADY_EXISTS:
       mErrorValue = NS_ERROR_DOM_FILESYSTEM_PATH_EXISTS_ERR;
       return;
     case NS_ERROR_FILE_NOT_DIRECTORY:
       mErrorValue = NS_ERROR_DOM_FILESYSTEM_TYPE_MISMATCH_ERR;
       return;
     case NS_ERROR_UNEXPECTED:
     default:
       mErrorValue = NS_ERROR_DOM_FILESYSTEM_UNKNOWN_ERR;
       return;
   }
 }
 } // namespace dom
 } // namespace mozilla

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

dom/filesystem/FileSystemTaskBase.cpp