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Diffstat (limited to 'dom/filesystem/GetDirectoryListingTask.cpp')
| -rw-r--r-- | dom/filesystem/GetDirectoryListingTask.cpp | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/dom/filesystem/GetDirectoryListingTask.cpp b/dom/filesystem/GetDirectoryListingTask.cpp new file mode 100644 index 0000000000..f78a04a9d0 --- /dev/null +++ b/dom/filesystem/GetDirectoryListingTask.cpp @@ -0,0 +1,371 @@ +/* -*- 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 "GetDirectoryListingTask.h" + +#include "HTMLSplitOnSpacesTokenizer.h" +#include "js/Value.h" +#include "mozilla/dom/FileBlobImpl.h" +#include "mozilla/dom/FileSystemBase.h" +#include "mozilla/dom/FileSystemUtils.h" +#include "mozilla/dom/IPCBlobUtils.h" +#include "mozilla/dom/PFileSystemParams.h" +#include "mozilla/dom/Promise.h" +#include "mozilla/dom/UnionTypes.h" +#include "mozilla/ipc/BackgroundParent.h" +#include "nsIFile.h" +#include "nsString.h" + +namespace mozilla::dom { + +/** + * GetDirectoryListingTaskChild + */ + +/* static */ +already_AddRefed<GetDirectoryListingTaskChild> +GetDirectoryListingTaskChild::Create(FileSystemBase* aFileSystem, + Directory* aDirectory, + nsIFile* aTargetPath, + const nsAString& aFilters, + ErrorResult& aRv) { + MOZ_ASSERT(aFileSystem); + MOZ_ASSERT(aDirectory); + aFileSystem->AssertIsOnOwningThread(); + + nsCOMPtr<nsIGlobalObject> globalObject = aFileSystem->GetParentObject(); + MOZ_ASSERT(globalObject); + + RefPtr<GetDirectoryListingTaskChild> task = new GetDirectoryListingTaskChild( + globalObject, aFileSystem, aDirectory, aTargetPath, aFilters); + + // aTargetPath can be null. In this case SetError will be called. + + task->mPromise = Promise::Create(globalObject, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + return task.forget(); +} + +GetDirectoryListingTaskChild::GetDirectoryListingTaskChild( + nsIGlobalObject* aGlobalObject, FileSystemBase* aFileSystem, + Directory* aDirectory, nsIFile* aTargetPath, const nsAString& aFilters) + : FileSystemTaskChildBase(aGlobalObject, aFileSystem), + mDirectory(aDirectory), + mTargetPath(aTargetPath), + mFilters(aFilters) { + MOZ_ASSERT(aFileSystem); + aFileSystem->AssertIsOnOwningThread(); +} + +GetDirectoryListingTaskChild::~GetDirectoryListingTaskChild() { + mFileSystem->AssertIsOnOwningThread(); +} + +already_AddRefed<Promise> GetDirectoryListingTaskChild::GetPromise() { + mFileSystem->AssertIsOnOwningThread(); + return RefPtr<Promise>(mPromise).forget(); +} + +FileSystemParams GetDirectoryListingTaskChild::GetRequestParams( + const nsString& aSerializedDOMPath, ErrorResult& aRv) const { + mFileSystem->AssertIsOnOwningThread(); + + // this is the real path. + nsAutoString path; + aRv = mTargetPath->GetPath(path); + if (NS_WARN_IF(aRv.Failed())) { + return FileSystemGetDirectoryListingParams(); + } + + // this is the dom path. + nsAutoString directoryPath; + mDirectory->GetPath(directoryPath, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return FileSystemGetDirectoryListingParams(); + } + + return FileSystemGetDirectoryListingParams(aSerializedDOMPath, path, + directoryPath, mFilters); +} + +void GetDirectoryListingTaskChild::SetSuccessRequestResult( + const FileSystemResponseValue& aValue, ErrorResult& aRv) { + mFileSystem->AssertIsOnOwningThread(); + MOZ_ASSERT(aValue.type() == + FileSystemResponseValue::TFileSystemDirectoryListingResponse); + + FileSystemDirectoryListingResponse r = aValue; + for (uint32_t i = 0; i < r.data().Length(); ++i) { + const FileSystemDirectoryListingResponseData& data = r.data()[i]; + + OwningFileOrDirectory* ofd = mTargetData.AppendElement(fallible); + if (!ofd) { + aRv.Throw(NS_ERROR_OUT_OF_MEMORY); + return; + } + + if (data.type() == FileSystemDirectoryListingResponseData:: + TFileSystemDirectoryListingResponseFile) { + const FileSystemDirectoryListingResponseFile& d = + data.get_FileSystemDirectoryListingResponseFile(); + + RefPtr<BlobImpl> blobImpl = IPCBlobUtils::Deserialize(d.blob()); + MOZ_ASSERT(blobImpl); + + nsCOMPtr<nsIGlobalObject> globalObject = mFileSystem->GetParentObject(); + MOZ_ASSERT(globalObject); + + RefPtr<File> file = File::Create(globalObject, blobImpl); + MOZ_ASSERT(file); + + ofd->SetAsFile() = file; + } else { + MOZ_ASSERT(data.type() == + FileSystemDirectoryListingResponseData:: + TFileSystemDirectoryListingResponseDirectory); + const FileSystemDirectoryListingResponseDirectory& d = + data.get_FileSystemDirectoryListingResponseDirectory(); + + nsCOMPtr<nsIFile> path; + aRv = NS_NewLocalFile(d.directoryRealPath(), true, getter_AddRefs(path)); + if (NS_WARN_IF(aRv.Failed())) { + return; + } + + RefPtr<Directory> directory = + Directory::Create(mFileSystem->GetParentObject(), path, mFileSystem); + MOZ_ASSERT(directory); + + ofd->SetAsDirectory() = directory; + } + } +} + +void GetDirectoryListingTaskChild::HandlerCallback() { + mFileSystem->AssertIsOnOwningThread(); + + if (mFileSystem->IsShutdown()) { + mPromise = nullptr; + return; + } + + if (HasError()) { + mPromise->MaybeReject(mErrorValue); + mPromise = nullptr; + return; + } + + mPromise->MaybeResolve(mTargetData); + mPromise = nullptr; +} + +/** + * GetDirectoryListingTaskParent + */ + +/* static */ +already_AddRefed<GetDirectoryListingTaskParent> +GetDirectoryListingTaskParent::Create( + FileSystemBase* aFileSystem, + const FileSystemGetDirectoryListingParams& aParam, + FileSystemRequestParent* aParent, ErrorResult& aRv) { + MOZ_ASSERT(XRE_IsParentProcess(), "Only call from parent process!"); + mozilla::ipc::AssertIsOnBackgroundThread(); + MOZ_ASSERT(aFileSystem); + + RefPtr<GetDirectoryListingTaskParent> task = + new GetDirectoryListingTaskParent(aFileSystem, aParam, aParent); + + aRv = NS_NewLocalFile(aParam.realPath(), true, + getter_AddRefs(task->mTargetPath)); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + return task.forget(); +} + +GetDirectoryListingTaskParent::GetDirectoryListingTaskParent( + FileSystemBase* aFileSystem, + const FileSystemGetDirectoryListingParams& aParam, + FileSystemRequestParent* aParent) + : FileSystemTaskParentBase(aFileSystem, aParam, aParent), + mDOMPath(aParam.domPath()), + mFilters(aParam.filters()) { + MOZ_ASSERT(XRE_IsParentProcess(), "Only call from parent process!"); + mozilla::ipc::AssertIsOnBackgroundThread(); + MOZ_ASSERT(aFileSystem); +} + +FileSystemResponseValue GetDirectoryListingTaskParent::GetSuccessRequestResult( + ErrorResult& aRv) const { + mozilla::ipc::AssertIsOnBackgroundThread(); + + nsTArray<FileSystemDirectoryListingResponseData> inputs; + + for (unsigned i = 0; i < mTargetData.Length(); i++) { + if (mTargetData[i].mType == FileOrDirectoryPath::eFilePath) { + nsCOMPtr<nsIFile> path; + nsresult rv = + NS_NewLocalFile(mTargetData[i].mPath, true, getter_AddRefs(path)); + if (NS_WARN_IF(NS_FAILED(rv))) { + continue; + } + + FileSystemDirectoryListingResponseFile fileData; + RefPtr<BlobImpl> blobImpl = new FileBlobImpl(path); + + nsAutoString filePath; + filePath.Assign(mDOMPath); + + // This is specific for unix root filesystem. + if (!mDOMPath.EqualsLiteral(FILESYSTEM_DOM_PATH_SEPARATOR_LITERAL)) { + filePath.AppendLiteral(FILESYSTEM_DOM_PATH_SEPARATOR_LITERAL); + } + + nsAutoString name; + blobImpl->GetName(name); + filePath.Append(name); + blobImpl->SetDOMPath(filePath); + + IPCBlob ipcBlob; + rv = IPCBlobUtils::Serialize(blobImpl, ipcBlob); + if (NS_WARN_IF(NS_FAILED(rv))) { + continue; + } + + fileData.blob() = ipcBlob; + inputs.AppendElement(fileData); + } else { + MOZ_ASSERT(mTargetData[i].mType == FileOrDirectoryPath::eDirectoryPath); + FileSystemDirectoryListingResponseDirectory directoryData; + directoryData.directoryRealPath() = mTargetData[i].mPath; + inputs.AppendElement(directoryData); + } + } + + FileSystemDirectoryListingResponse response; + response.data() = std::move(inputs); + return response; +} + +nsresult GetDirectoryListingTaskParent::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; + } + + 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. + bool isDir; + rv = mTargetPath->IsDirectory(&isDir); + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + + if (!isDir) { + return NS_ERROR_DOM_FILESYSTEM_TYPE_MISMATCH_ERR; + } + + nsCOMPtr<nsIDirectoryEnumerator> entries; + rv = mTargetPath->GetDirectoryEntries(getter_AddRefs(entries)); + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + + bool filterOutSensitive = false; + { + HTMLSplitOnSpacesTokenizer tokenizer(mFilters, ';'); + nsAutoString token; + while (tokenizer.hasMoreTokens()) { + token = tokenizer.nextToken(); + if (token.EqualsLiteral("filter-out-sensitive")) { + filterOutSensitive = true; + } else { + MOZ_CRASH("Unrecognized filter"); + } + } + } + + for (;;) { + nsCOMPtr<nsIFile> currFile; + if (NS_WARN_IF(NS_FAILED(entries->GetNextFile(getter_AddRefs(currFile)))) || + !currFile) { + break; + } + bool isLink, isSpecial, isFile; + if (NS_WARN_IF(NS_FAILED(currFile->IsSymlink(&isLink)) || + NS_FAILED(currFile->IsSpecial(&isSpecial))) || + // Although we allow explicit individual selection of symlinks via the + // file picker, we do not process symlinks in directory traversal. Our + // specific policy decision is documented at + // https://bugzilla.mozilla.org/show_bug.cgi?id=1813299#c20 + isLink || isSpecial) { + continue; + } + if (NS_WARN_IF(NS_FAILED(currFile->IsFile(&isFile)) || + NS_FAILED(currFile->IsDirectory(&isDir))) || + !(isFile || isDir)) { + continue; + } + + if (filterOutSensitive) { + bool isHidden; + if (NS_WARN_IF(NS_FAILED(currFile->IsHidden(&isHidden))) || isHidden) { + continue; + } + nsAutoString leafName; + if (NS_WARN_IF(NS_FAILED(currFile->GetLeafName(leafName)))) { + continue; + } + if (leafName[0] == char16_t('.')) { + continue; + } + } + + nsAutoString path; + if (NS_WARN_IF(NS_FAILED(currFile->GetPath(path)))) { + continue; + } + + FileOrDirectoryPath element; + element.mPath = path; + element.mType = isDir ? FileOrDirectoryPath::eDirectoryPath + : FileOrDirectoryPath::eFilePath; + + if (!mTargetData.AppendElement(element, fallible)) { + return NS_ERROR_OUT_OF_MEMORY; + } + } + return NS_OK; +} + +nsresult GetDirectoryListingTaskParent::GetTargetPath(nsAString& aPath) const { + return mTargetPath->GetPath(aPath); +} + +} // namespace mozilla::dom |