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Diffstat (limited to 'src/core/renderer/pepper/pepper_flash_clipboard_message_filter_qt.cpp')
| -rw-r--r-- | src/core/renderer/pepper/pepper_flash_clipboard_message_filter_qt.cpp | 401 |
1 files changed, 401 insertions, 0 deletions
diff --git a/src/core/renderer/pepper/pepper_flash_clipboard_message_filter_qt.cpp b/src/core/renderer/pepper/pepper_flash_clipboard_message_filter_qt.cpp new file mode 100644 index 000000000..3202548ae --- /dev/null +++ b/src/core/renderer/pepper/pepper_flash_clipboard_message_filter_qt.cpp @@ -0,0 +1,401 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the QtWebEngine module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPLv3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// based on chrome/browser/renderer_host/pepper/pepper_flash_clipboard_message_filter.cc +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pepper_flash_clipboard_message_filter_qt.h" + +#include "base/pickle.h" +#include "base/strings/utf_string_conversions.h" +#include "content/public/browser/browser_thread.h" +#include "ipc/ipc_message.h" +#include "ipc/ipc_message_macros.h" +#include "ppapi/c/pp_errors.h" +#include "ppapi/c/private/ppb_flash_clipboard.h" +#include "ppapi/host/dispatch_host_message.h" +#include "ppapi/host/host_message_context.h" +#include "ppapi/host/ppapi_host.h" +#include "ppapi/proxy/ppapi_messages.h" +#include "ppapi/proxy/resource_message_params.h" +#include "ui/base/clipboard/scoped_clipboard_writer.h" + +using content::BrowserThread; + +namespace QtWebEngineCore { + +namespace { + +const size_t kMaxClipboardWriteSize = 1000000; + +ui::ClipboardType ConvertClipboardType(uint32_t type) +{ + switch (type) { + case PP_FLASH_CLIPBOARD_TYPE_STANDARD: + return ui::CLIPBOARD_TYPE_COPY_PASTE; + case PP_FLASH_CLIPBOARD_TYPE_SELECTION: + return ui::CLIPBOARD_TYPE_SELECTION; + } + NOTREACHED(); + return ui::CLIPBOARD_TYPE_COPY_PASTE; +} + +// Functions to pack/unpack custom data from a pickle. See the header file for +// more detail on custom formats in Pepper. +// TODO(raymes): Currently pepper custom formats are stored in their own +// native format type. However we should be able to store them in the same way +// as "Web Custom" formats are. This would allow clipboard data to be shared +// between pepper applications and web applications. However currently web apps +// assume all data that is placed on the clipboard is UTF16 and pepper allows +// arbitrary data so this change would require some reworking of the chrome +// clipboard interface for custom data. +bool JumpToFormatInPickle(const base::string16& format, base::PickleIterator* iter) +{ + uint32_t size = 0; + if (!iter->ReadUInt32(&size)) + return false; + for (uint32_t i = 0; i < size; ++i) { + base::string16 stored_format; + if (!iter->ReadString16(&stored_format)) + return false; + if (stored_format == format) + return true; + int skip_length; + if (!iter->ReadLength(&skip_length)) + return false; + if (!iter->SkipBytes(skip_length)) + return false; + } + return false; +} + +bool IsFormatAvailableInPickle(const base::string16& format, const base::Pickle& pickle) +{ + base::PickleIterator iter(pickle); + return JumpToFormatInPickle(format, &iter); +} + +std::string ReadDataFromPickle(const base::string16& format, const base::Pickle& pickle) +{ + std::string result; + base::PickleIterator iter(pickle); + if (!JumpToFormatInPickle(format, &iter) || !iter.ReadString(&result)) + return std::string(); + return result; +} + +bool WriteDataToPickle(const std::map<base::string16, std::string>& data, base::Pickle* pickle) +{ + pickle->WriteUInt32(data.size()); + for (std::map<base::string16, std::string>::const_iterator it = data.begin(); it != data.end(); ++it) { + if (!pickle->WriteString16(it->first)) + return false; + if (!pickle->WriteString(it->second)) + return false; + } + return true; +} + +} // namespace + +PepperFlashClipboardMessageFilter::PepperFlashClipboardMessageFilter() {} + +PepperFlashClipboardMessageFilter::~PepperFlashClipboardMessageFilter() {} + +scoped_refptr<base::TaskRunner> +PepperFlashClipboardMessageFilter::OverrideTaskRunnerForMessage(const IPC::Message& msg) +{ + // Clipboard writes should always occur on the UI thread due to the + // restrictions of various platform APIs. In general, the clipboard is not + // thread-safe, so all clipboard calls should be serviced from the UI thread. + if (msg.type() == PpapiHostMsg_FlashClipboard_WriteData::ID) + return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI); + + // Windows needs clipboard reads to be serviced from the IO thread because + // these are sync IPCs which can result in deadlocks with plugins if serviced + // from the UI thread. Note that Windows clipboard calls ARE thread-safe so it + // is ok for reads and writes to be serviced from different threads. +#if !defined(OS_WIN) + return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::UI); +#else + return BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO); +#endif +} + +int32_t PepperFlashClipboardMessageFilter::OnResourceMessageReceived(const IPC::Message& msg, + ppapi::host::HostMessageContext* context) +{ + PPAPI_BEGIN_MESSAGE_MAP(PepperFlashClipboardMessageFilter, msg) + PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FlashClipboard_RegisterCustomFormat, + OnMsgRegisterCustomFormat) + PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FlashClipboard_IsFormatAvailable, + OnMsgIsFormatAvailable) + PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FlashClipboard_ReadData, + OnMsgReadData) + PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FlashClipboard_WriteData, + OnMsgWriteData) + PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_FlashClipboard_GetSequenceNumber, + OnMsgGetSequenceNumber) + PPAPI_END_MESSAGE_MAP() + return PP_ERROR_FAILED; +} + +int32_t PepperFlashClipboardMessageFilter::OnMsgRegisterCustomFormat( + ppapi::host::HostMessageContext* host_context, + const std::string& format_name) +{ + uint32_t format = m_custom_formats.RegisterFormat(format_name); + if (format == PP_FLASH_CLIPBOARD_FORMAT_INVALID) + return PP_ERROR_FAILED; + host_context->reply_msg = PpapiPluginMsg_FlashClipboard_RegisterCustomFormatReply(format); + return PP_OK; +} + +int32_t PepperFlashClipboardMessageFilter::OnMsgIsFormatAvailable( + ppapi::host::HostMessageContext* host_context, + uint32_t clipboard_type, + uint32_t format) +{ + if (clipboard_type != PP_FLASH_CLIPBOARD_TYPE_STANDARD) { + NOTIMPLEMENTED(); + return PP_ERROR_FAILED; + } + + ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread(); + ui::ClipboardType type = ConvertClipboardType(clipboard_type); + bool available = false; + switch (format) { + case PP_FLASH_CLIPBOARD_FORMAT_PLAINTEXT: { + bool plain = clipboard->IsFormatAvailable(ui::Clipboard::GetPlainTextFormatType(), type); + bool plainw = clipboard->IsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(), type); + available = plain || plainw; + break; + } + case PP_FLASH_CLIPBOARD_FORMAT_HTML: + available = clipboard->IsFormatAvailable(ui::Clipboard::GetHtmlFormatType(), type); + break; + case PP_FLASH_CLIPBOARD_FORMAT_RTF: + available = clipboard->IsFormatAvailable(ui::Clipboard::GetRtfFormatType(), type); + break; + case PP_FLASH_CLIPBOARD_FORMAT_INVALID: + break; + default: + if (m_custom_formats.IsFormatRegistered(format)) { + std::string format_name = m_custom_formats.GetFormatName(format); + std::string clipboard_data; + clipboard->ReadData(ui::Clipboard::GetPepperCustomDataFormatType(), &clipboard_data); + base::Pickle pickle(clipboard_data.data(), clipboard_data.size()); + available = IsFormatAvailableInPickle(base::UTF8ToUTF16(format_name), pickle); + } + break; + } + + return available ? PP_OK : PP_ERROR_FAILED; +} + +int32_t PepperFlashClipboardMessageFilter::OnMsgReadData( + ppapi::host::HostMessageContext* host_context, + uint32_t clipboard_type, + uint32_t format) +{ + if (clipboard_type != PP_FLASH_CLIPBOARD_TYPE_STANDARD) { + NOTIMPLEMENTED(); + return PP_ERROR_FAILED; + } + + ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread(); + ui::ClipboardType type = ConvertClipboardType(clipboard_type); + std::string clipboard_string; + int32_t result = PP_ERROR_FAILED; + switch (format) { + case PP_FLASH_CLIPBOARD_FORMAT_PLAINTEXT: { + if (clipboard->IsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(), type)) { + base::string16 text; + clipboard->ReadText(type, &text); + if (!text.empty()) { + result = PP_OK; + clipboard_string = base::UTF16ToUTF8(text); + break; + } + } + // If the PlainTextW format isn't available or is empty, take the + // ASCII text format. + if (clipboard->IsFormatAvailable(ui::Clipboard::GetPlainTextFormatType(), type)) { + result = PP_OK; + clipboard->ReadAsciiText(type, &clipboard_string); + } + break; + } + case PP_FLASH_CLIPBOARD_FORMAT_HTML: { + if (!clipboard->IsFormatAvailable(ui::Clipboard::GetHtmlFormatType(), type)) { + break; + } + + base::string16 html; + std::string url; + uint32_t fragment_start; + uint32_t fragment_end; + clipboard->ReadHTML(type, &html, &url, &fragment_start, &fragment_end); + result = PP_OK; + clipboard_string = base::UTF16ToUTF8(html.substr(fragment_start, fragment_end - fragment_start)); + break; + } + case PP_FLASH_CLIPBOARD_FORMAT_RTF: { + if (!clipboard->IsFormatAvailable(ui::Clipboard::GetRtfFormatType(), type)) { + break; + } + result = PP_OK; + clipboard->ReadRTF(type, &clipboard_string); + break; + } + case PP_FLASH_CLIPBOARD_FORMAT_INVALID: + break; + default: + if (m_custom_formats.IsFormatRegistered(format)) { + base::string16 format_name = + base::UTF8ToUTF16(m_custom_formats.GetFormatName(format)); + std::string clipboard_data; + clipboard->ReadData(ui::Clipboard::GetPepperCustomDataFormatType(), + &clipboard_data); + base::Pickle pickle(clipboard_data.data(), clipboard_data.size()); + if (IsFormatAvailableInPickle(format_name, pickle)) { + result = PP_OK; + clipboard_string = ReadDataFromPickle(format_name, pickle); + } + } + break; + } + + if (result == PP_OK) { + host_context->reply_msg = PpapiPluginMsg_FlashClipboard_ReadDataReply(clipboard_string); + } + return result; +} + +int32_t PepperFlashClipboardMessageFilter::OnMsgWriteData( + ppapi::host::HostMessageContext* host_context, + uint32_t clipboard_type, + const std::vector<uint32_t>& formats, + const std::vector<std::string>& data) +{ + if (clipboard_type != PP_FLASH_CLIPBOARD_TYPE_STANDARD) { + NOTIMPLEMENTED(); + return PP_ERROR_FAILED; + } + if (formats.size() != data.size()) + return PP_ERROR_FAILED; + + ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread(); + ui::ClipboardType type = ConvertClipboardType(clipboard_type); + // If no formats are passed in clear the clipboard. + if (formats.size() == 0) { + clipboard->Clear(type); + return PP_OK; + } + + ui::ScopedClipboardWriter scw(type); + std::map<base::string16, std::string> custom_data_map; + int32_t res = PP_OK; + for (uint32_t i = 0; i < formats.size(); ++i) { + if (data[i].length() > kMaxClipboardWriteSize) { + res = PP_ERROR_NOSPACE; + break; + } + + switch (formats[i]) { + case PP_FLASH_CLIPBOARD_FORMAT_PLAINTEXT: + scw.WriteText(base::UTF8ToUTF16(data[i])); + break; + case PP_FLASH_CLIPBOARD_FORMAT_HTML: + scw.WriteHTML(base::UTF8ToUTF16(data[i]), std::string()); + break; + case PP_FLASH_CLIPBOARD_FORMAT_RTF: + scw.WriteRTF(data[i]); + break; + case PP_FLASH_CLIPBOARD_FORMAT_INVALID: + res = PP_ERROR_BADARGUMENT; + break; + default: + if (m_custom_formats.IsFormatRegistered(formats[i])) { + std::string format_name = m_custom_formats.GetFormatName(formats[i]); + custom_data_map[base::UTF8ToUTF16(format_name)] = data[i]; + } else { + // Invalid format. + res = PP_ERROR_BADARGUMENT; + break; + } + } + + if (res != PP_OK) + break; + } + + if (custom_data_map.size() > 0) { + base::Pickle pickle; + if (WriteDataToPickle(custom_data_map, &pickle)) { + scw.WritePickledData(pickle, ui::Clipboard::GetPepperCustomDataFormatType()); + } else { + res = PP_ERROR_BADARGUMENT; + } + } + + if (res != PP_OK) { + // Need to clear the objects so nothing is written. + scw.Reset(); + } + + return res; +} + +int32_t PepperFlashClipboardMessageFilter::OnMsgGetSequenceNumber( + ppapi::host::HostMessageContext* host_context, + uint32_t clipboard_type) +{ + if (clipboard_type != PP_FLASH_CLIPBOARD_TYPE_STANDARD) { + NOTIMPLEMENTED(); + return PP_ERROR_FAILED; + } + + ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread(); + ui::ClipboardType type = ConvertClipboardType(clipboard_type); + int64_t sequence_number = clipboard->GetSequenceNumber(type); + host_context->reply_msg = PpapiPluginMsg_FlashClipboard_GetSequenceNumberReply(sequence_number); + return PP_OK; +} + +} // namespace QtWebEngineCore |