| /* |
| * Copyright (C) 2019-2022 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "ClipboardItemBindingsDataSource.h" |
| |
| #include "BitmapImage.h" |
| #include "Blob.h" |
| #include "Clipboard.h" |
| #include "ClipboardItem.h" |
| #include "Document.h" |
| #include "ExceptionCode.h" |
| #include "FileReaderLoader.h" |
| #include "Frame.h" |
| #include "GraphicsContext.h" |
| #include "ImageBuffer.h" |
| #include "JSBlob.h" |
| #include "JSDOMPromise.h" |
| #include "JSDOMPromiseDeferred.h" |
| #include "PasteboardCustomData.h" |
| #include "SharedBuffer.h" |
| #include "markup.h" |
| #include <wtf/Function.h> |
| |
| namespace WebCore { |
| |
| static RefPtr<Document> documentFromClipboard(const Clipboard* clipboard) |
| { |
| if (!clipboard) |
| return nullptr; |
| |
| auto* frame = clipboard->frame(); |
| if (!frame) |
| return nullptr; |
| |
| return frame->document(); |
| } |
| |
| static FileReaderLoader::ReadType readTypeForMIMEType(const String& type) |
| { |
| if (type == "text/uri-list"_s || type == "text/plain"_s || type == "text/html"_s) |
| return FileReaderLoader::ReadAsText; |
| return FileReaderLoader::ReadAsArrayBuffer; |
| } |
| |
| ClipboardItemBindingsDataSource::ClipboardItemBindingsDataSource(ClipboardItem& item, Vector<KeyValuePair<String, RefPtr<DOMPromise>>>&& itemPromises) |
| : ClipboardItemDataSource(item) |
| , m_itemPromises(WTFMove(itemPromises)) |
| { |
| } |
| |
| ClipboardItemBindingsDataSource::~ClipboardItemBindingsDataSource() = default; |
| |
| Vector<String> ClipboardItemBindingsDataSource::types() const |
| { |
| return m_itemPromises.map([&] (auto& typeAndItem) { |
| return typeAndItem.key; |
| }); |
| } |
| |
| void ClipboardItemBindingsDataSource::getType(const String& type, Ref<DeferredPromise>&& promise) |
| { |
| auto matchIndex = m_itemPromises.findIf([&] (auto& item) { |
| return type == item.key; |
| }); |
| |
| if (matchIndex == notFound) { |
| promise->reject(NotFoundError); |
| return; |
| } |
| |
| auto itemPromise = m_itemPromises[matchIndex].value; |
| itemPromise->whenSettled([itemPromise, promise = WTFMove(promise), type] () mutable { |
| if (itemPromise->status() != DOMPromise::Status::Fulfilled) { |
| promise->reject(AbortError); |
| return; |
| } |
| |
| auto result = itemPromise->result(); |
| if (!result) { |
| promise->reject(TypeError); |
| return; |
| } |
| |
| String string; |
| result.getString(itemPromise->globalObject(), string); |
| if (!string.isNull()) { |
| promise->resolve<IDLInterface<Blob>>(ClipboardItem::blobFromString(promise->scriptExecutionContext(), string, type)); |
| return; |
| } |
| |
| if (!result.isObject()) { |
| promise->reject(TypeError); |
| return; |
| } |
| |
| if (auto blob = JSBlob::toWrapped(result.getObject()->vm(), result.getObject())) |
| promise->resolve<IDLInterface<Blob>>(*blob); |
| else |
| promise->reject(TypeError); |
| }); |
| } |
| |
| void ClipboardItemBindingsDataSource::collectDataForWriting(Clipboard& destination, CompletionHandler<void(std::optional<PasteboardCustomData>)>&& completion) |
| { |
| m_itemTypeLoaders.clear(); |
| ASSERT(!m_completionHandler); |
| m_completionHandler = WTFMove(completion); |
| m_writingDestination = destination; |
| m_numberOfPendingClipboardTypes = m_itemPromises.size(); |
| m_itemTypeLoaders = m_itemPromises.map([&] (auto& typeAndItem) { |
| auto type = typeAndItem.key; |
| auto itemTypeLoader = ClipboardItemTypeLoader::create(type, [this, protectedItem = Ref { m_item }] { |
| ASSERT(m_numberOfPendingClipboardTypes); |
| if (!--m_numberOfPendingClipboardTypes) |
| invokeCompletionHandler(); |
| }); |
| |
| auto promise = typeAndItem.value; |
| /* hack: gcc 8.4 will segfault if the WeakPtr is instantiated within the lambda captures */ |
| auto wl = WeakPtr { itemTypeLoader }; |
| promise->whenSettled([this, protectedItem = Ref { m_item }, destination = m_writingDestination, promise, type, weakItemTypeLoader = WTFMove(wl)] () mutable { |
| if (!weakItemTypeLoader) |
| return; |
| |
| Ref itemTypeLoader { *weakItemTypeLoader }; |
| #if !COMPILER(MSVC) |
| ASSERT_UNUSED(this, notFound != m_itemTypeLoaders.findIf([&] (auto& loader) { return loader.ptr() == itemTypeLoader.ptr(); })); |
| #endif |
| |
| auto result = promise->result(); |
| if (!result) { |
| itemTypeLoader->didFailToResolve(); |
| return; |
| } |
| |
| RefPtr clipboard = destination.get(); |
| if (!clipboard) { |
| itemTypeLoader->didFailToResolve(); |
| return; |
| } |
| |
| if (!clipboard->scriptExecutionContext()) { |
| itemTypeLoader->didFailToResolve(); |
| return; |
| } |
| |
| String text; |
| result.getString(promise->globalObject(), text); |
| if (!text.isNull()) { |
| itemTypeLoader->didResolveToString(text); |
| return; |
| } |
| |
| if (!result.isObject()) { |
| itemTypeLoader->didFailToResolve(); |
| return; |
| } |
| |
| if (RefPtr blob = JSBlob::toWrapped(result.getObject()->vm(), result.getObject())) |
| itemTypeLoader->didResolveToBlob(*clipboard->scriptExecutionContext(), blob.releaseNonNull()); |
| else |
| itemTypeLoader->didFailToResolve(); |
| }); |
| |
| return itemTypeLoader; |
| }); |
| |
| if (!m_numberOfPendingClipboardTypes) |
| invokeCompletionHandler(); |
| } |
| |
| void ClipboardItemBindingsDataSource::invokeCompletionHandler() |
| { |
| if (!m_completionHandler) { |
| ASSERT_NOT_REACHED(); |
| return; |
| } |
| |
| auto completionHandler = std::exchange(m_completionHandler, { }); |
| auto itemTypeLoaders = std::exchange(m_itemTypeLoaders, { }); |
| RefPtr clipboard = m_writingDestination.get(); |
| m_writingDestination = nullptr; |
| |
| auto document = documentFromClipboard(clipboard.get()); |
| if (!document) { |
| completionHandler(std::nullopt); |
| return; |
| } |
| |
| PasteboardCustomData customData; |
| for (auto& itemTypeLoader : itemTypeLoaders) { |
| auto type = itemTypeLoader->type(); |
| auto& data = itemTypeLoader->data(); |
| if (std::holds_alternative<String>(data) && !!std::get<String>(data)) |
| customData.writeString(type, std::get<String>(data)); |
| else if (std::holds_alternative<Ref<SharedBuffer>>(data)) |
| customData.writeData(type, std::get<Ref<SharedBuffer>>(data).copyRef()); |
| else { |
| completionHandler(std::nullopt); |
| return; |
| } |
| } |
| |
| customData.setOrigin(document->originIdentifierForPasteboard()); |
| completionHandler(WTFMove(customData)); |
| } |
| |
| ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::ClipboardItemTypeLoader(const String& type, CompletionHandler<void()>&& completionHandler) |
| : m_type(type) |
| , m_completionHandler(WTFMove(completionHandler)) |
| { |
| } |
| |
| ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::~ClipboardItemTypeLoader() |
| { |
| if (m_blobLoader) |
| m_blobLoader->cancel(); |
| |
| invokeCompletionHandler(); |
| } |
| |
| void ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::didFinishLoading() |
| { |
| ASSERT(m_blobLoader); |
| auto stringResult = readTypeForMIMEType(m_type) == FileReaderLoader::ReadAsText ? m_blobLoader->stringResult() : nullString(); |
| if (!stringResult.isNull()) |
| m_data = { stringResult }; |
| else if (auto arrayBuffer = m_blobLoader->arrayBufferResult()) |
| m_data = { SharedBuffer::create(static_cast<const char*>(arrayBuffer->data()), arrayBuffer->byteLength()) }; |
| m_blobLoader = nullptr; |
| invokeCompletionHandler(); |
| } |
| |
| void ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::didFail(ExceptionCode) |
| { |
| ASSERT(m_blobLoader); |
| m_blobLoader = nullptr; |
| invokeCompletionHandler(); |
| } |
| |
| void ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::sanitizeDataIfNeeded() |
| { |
| if (m_type == "text/html"_s) { |
| String markupToSanitize; |
| if (std::holds_alternative<Ref<SharedBuffer>>(m_data)) { |
| auto& buffer = std::get<Ref<SharedBuffer>>(m_data); |
| markupToSanitize = String::fromUTF8(buffer->data(), buffer->size()); |
| } else if (std::holds_alternative<String>(m_data)) |
| markupToSanitize = std::get<String>(m_data); |
| |
| if (markupToSanitize.isEmpty()) |
| return; |
| |
| m_data = { sanitizeMarkup(markupToSanitize) }; |
| } |
| |
| if (m_type == "image/png"_s) { |
| RefPtr<SharedBuffer> bufferToSanitize; |
| if (std::holds_alternative<Ref<SharedBuffer>>(m_data)) |
| bufferToSanitize = std::get<Ref<SharedBuffer>>(m_data).ptr(); |
| else if (std::holds_alternative<String>(m_data)) |
| bufferToSanitize = utf8Buffer(std::get<String>(m_data)); |
| |
| if (!bufferToSanitize || bufferToSanitize->isEmpty()) |
| return; |
| |
| auto bitmapImage = BitmapImage::create(); |
| bitmapImage->setData(WTFMove(bufferToSanitize), true); |
| auto imageBuffer = ImageBuffer::create(bitmapImage->size(), RenderingPurpose::Unspecified, 1, DestinationColorSpace::SRGB(), PixelFormat::BGRA8); |
| if (!imageBuffer) { |
| m_data = { nullString() }; |
| return; |
| } |
| |
| imageBuffer->context().drawImage(bitmapImage.get(), FloatPoint::zero()); |
| m_data = { SharedBuffer::create(imageBuffer->toData("image/png"_s)) }; |
| } |
| } |
| |
| void ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::invokeCompletionHandler() |
| { |
| if (auto completion = WTFMove(m_completionHandler)) { |
| sanitizeDataIfNeeded(); |
| completion(); |
| } |
| } |
| |
| void ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::didResolveToBlob(ScriptExecutionContext& context, Ref<Blob>&& blob) |
| { |
| ASSERT(!m_blobLoader); |
| m_blobLoader = makeUnique<FileReaderLoader>(readTypeForMIMEType(m_type), this); |
| m_blobLoader->start(&context, WTFMove(blob)); |
| } |
| |
| void ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::didFailToResolve() |
| { |
| ASSERT(!m_blobLoader); |
| invokeCompletionHandler(); |
| } |
| |
| void ClipboardItemBindingsDataSource::ClipboardItemTypeLoader::didResolveToString(const String& text) |
| { |
| ASSERT(!m_blobLoader); |
| m_data = { text }; |
| invokeCompletionHandler(); |
| } |
| |
| } // namespace WebCore |
