Add plugin placeholder when ppapi can't be loaded

Task-number: QTBUG-82012
Change-Id: I66f70f879203e8fba585caa472256dde06984a04
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>

6 files changed, 389 insertions, 0 deletions

diff --git a/src/core/renderer/content_renderer_client_qt.cpp b/src/core/renderer/content_renderer_client_qt.cpp
index aa6038723..f7c8a497b 100644
--- a/src/core/renderer/content_renderer_client_qt.cpp
+++ b/src/core/renderer/content_renderer_client_qt.cpp
@@ -95,6 +95,12 @@
 #include "extensions/extensions_renderer_client_qt.h"
 #endif //ENABLE_EXTENSIONS
 
+#if BUILDFLAG(ENABLE_PLUGINS)
+#include "plugins/loadable_plugin_placeholder_qt.h"
+#include "plugins/plugin_placeholder_qt.h"
+#include "content/common/frame_messages.h"
+#endif // ENABLE_PLUGINS
+
 #include "services/service_manager/public/cpp/binder_registry.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "services/service_manager/public/cpp/service_binding.h"
@@ -324,9 +330,36 @@ bool ContentRendererClientQt::OverrideCreatePlugin(content::RenderFrame *render_
     if (!ExtensionsRendererClientQt::GetInstance()->OverrideCreatePlugin(render_frame, params))
         return false;
 #endif //ENABLE_EXTENSIONS
+
+#if BUILDFLAG(ENABLE_PLUGINS)
+    chrome::mojom::PluginInfoPtr plugin_info = chrome::mojom::PluginInfo::New();
+    content::WebPluginInfo info;
+    std::string mime_type;
+    bool found = false;
+
+    render_frame->Send(new FrameHostMsg_GetPluginInfo(render_frame->GetRoutingID(), params.url,
+                                                      render_frame->GetWebFrame()->Top()->GetSecurityOrigin(),
+                                                      params.mime_type.Utf8(), &found, &info, &mime_type));
+    if (!found) {
+        *plugin = CreatePlugin(render_frame, params, *plugin_info);
+        return true;
+    }
+#endif  // BUILDFLAG(ENABLE_PLUGINS)
     return content::ContentRendererClient::OverrideCreatePlugin(render_frame, params, plugin);
 }
 
+#if BUILDFLAG(ENABLE_PLUGINS)
+// static
+blink::WebPlugin* ContentRendererClientQt::CreatePlugin(content::RenderFrame* render_frame,
+                                                        const blink::WebPluginParams& original_params,
+                                                        const chrome::mojom::PluginInfo& plugin_info)
+{
+    // If the browser plugin is to be enabled, this should be handled by the
+    // renderer, so the code won't reach here due to the early exit in OverrideCreatePlugin.
+    return LoadablePluginPlaceholderQt::CreateLoadableMissingPlugin(render_frame, original_params)->plugin();
+}
+#endif  //BUILDFLAG(ENABLE_PLUGINS)
+
 content::BrowserPluginDelegate *ContentRendererClientQt::CreateBrowserPluginDelegate(content::RenderFrame *render_frame,
                                                                                      const content::WebPluginInfo &info,
                                                                                      const std::string &mime_type,
diff --git a/src/core/renderer/content_renderer_client_qt.h b/src/core/renderer/content_renderer_client_qt.h
index 46504d606..da70d29a8 100644
--- a/src/core/renderer/content_renderer_client_qt.h
+++ b/src/core/renderer/content_renderer_client_qt.h
@@ -44,6 +44,12 @@
 #include "components/spellcheck/spellcheck_buildflags.h"
 #include "services/service_manager/public/cpp/binder_registry.h"
 #include "services/service_manager/public/cpp/local_interface_provider.h"
+#include "ppapi/buildflags/buildflags.h"
+
+#if BUILDFLAG(ENABLE_PLUGINS)
+#include "qtwebengine/browser/plugin.mojom.h"
+#include "third_party/blink/public/web/web_plugin_params.h"
+#endif
 
 #include <QScopedPointer>
 
@@ -67,6 +73,10 @@ class WebCacheImpl;
 class SpellCheck;
 #endif
 
+namespace content {
+struct WebPluginInfo;
+}
+
 namespace QtWebEngineCore {
 
 class RenderThreadObserverQt;
@@ -121,6 +131,12 @@ public:
 
     void BindReceiverOnMainThread(mojo::GenericPendingReceiver receiver) override;
 
+#if BUILDFLAG(ENABLE_PLUGINS)
+    static blink::WebPlugin* CreatePlugin(content::RenderFrame* render_frame,
+                                          const blink::WebPluginParams& params,
+                                          const chrome::mojom::PluginInfo& plugin_info);
+#endif
+
 private:
 #if BUILDFLAG(ENABLE_SPELLCHECK)
     void InitSpellCheck();
diff --git a/src/core/renderer/plugins/loadable_plugin_placeholder_qt.cpp b/src/core/renderer/plugins/loadable_plugin_placeholder_qt.cpp
new file mode 100644
index 000000000..b43d9a24b
--- /dev/null
+++ b/src/core/renderer/plugins/loadable_plugin_placeholder_qt.cpp
@@ -0,0 +1,103 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Copyright 2015 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 "loadable_plugin_placeholder_qt.h"
+#include "qtwebenginecoreglobal_p.h"
+
+#include "content/public/renderer/render_frame.h"
+#include "components/strings/grit/components_strings.h"
+#include "chrome/grit/renderer_resources.h"
+#include "gin/handle.h"
+#include "gin/wrappable.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/base/webui/jstemplate_builder.h"
+
+namespace QtWebEngineCore {
+
+// static
+gin::WrapperInfo LoadablePluginPlaceholderQt::kWrapperInfo = {gin::kEmbedderNativeGin};
+
+LoadablePluginPlaceholderQt::LoadablePluginPlaceholderQt(content::RenderFrame* render_frame,
+                                                         const blink::WebPluginParams& params,
+                                                         const std::string& html_data,
+                                                         const base::string16& title)
+    : plugins::LoadablePluginPlaceholder(render_frame, params, html_data)
+    , context_menu_request_id_(0)
+{}
+
+LoadablePluginPlaceholderQt::~LoadablePluginPlaceholderQt()
+{
+    if (context_menu_request_id_ && render_frame())
+        render_frame()->CancelContextMenu(context_menu_request_id_);
+}
+
+// TODO(bauerb): Move this method to NonLoadablePluginPlaceholder?
+// static
+LoadablePluginPlaceholderQt* LoadablePluginPlaceholderQt::CreateLoadableMissingPlugin(content::RenderFrame* render_frame,
+                                                                                      const blink::WebPluginParams& params)
+{
+    const base::StringPiece template_html(ui::ResourceBundle::GetSharedInstance().GetRawDataResource(IDR_BLOCKED_PLUGIN_HTML));
+
+    base::DictionaryValue values;
+    values.SetString("name", "");
+    values.SetString("message", l10n_util::GetStringUTF8(IDS_PLUGIN_NOT_SUPPORTED));
+
+    const std::string html_data = webui::GetI18nTemplateHtml(template_html, &values);
+
+    // Will destroy itself when its WebViewPlugin is going away.
+    return new LoadablePluginPlaceholderQt(render_frame, params, html_data, params.mime_type.Utf16());
+}
+
+blink::WebPlugin* LoadablePluginPlaceholderQt::CreatePlugin()
+{
+    QT_NOT_YET_IMPLEMENTED
+    return nullptr;
+}
+
+v8::Local<v8::Value> LoadablePluginPlaceholderQt::GetV8Handle(v8::Isolate* isolate)
+{
+    return gin::CreateHandle(isolate, this).ToV8();
+}
+
+}  // namespace QtWebEngineCore
diff --git a/src/core/renderer/plugins/loadable_plugin_placeholder_qt.h b/src/core/renderer/plugins/loadable_plugin_placeholder_qt.h
new file mode 100644
index 000000000..7bcad2d96
--- /dev/null
+++ b/src/core/renderer/plugins/loadable_plugin_placeholder_qt.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Copyright 2015 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.
+
+#ifndef LOADALBLE_PLUGIN_PLACEHOLDER_QT_H
+#define LOADALBLE_PLUGIN_PLACEHOLDER_QT_H
+
+#include "base/macros.h"
+#include "components/plugins/renderer/loadable_plugin_placeholder.h"
+
+namespace QtWebEngineCore {
+
+class LoadablePluginPlaceholderQt final : public plugins::LoadablePluginPlaceholder
+                                        , public gin::Wrappable<LoadablePluginPlaceholderQt>
+{
+public:
+    static gin::WrapperInfo kWrapperInfo;
+
+    // Creates a new WebViewPlugin with a MissingPlugin as a delegate.
+    static LoadablePluginPlaceholderQt* CreateLoadableMissingPlugin(content::RenderFrame* render_frame,
+                                                                    const blink::WebPluginParams& params);
+
+private:
+    LoadablePluginPlaceholderQt(content::RenderFrame* render_frame,
+                                const blink::WebPluginParams& params,
+                                const std::string& html_data,
+                                const base::string16& title);
+    ~LoadablePluginPlaceholderQt() override;
+
+    // content::LoadablePluginPlaceholder overrides.
+    blink::WebPlugin* CreatePlugin() override;
+    void OnBlockedContent(content::RenderFrame::PeripheralContentStatus status,
+                          bool is_same_origin) override {}
+
+    // WebViewPlugin::Delegate (via PluginPlaceholder) methods:
+    v8::Local<v8::Value> GetV8Handle(v8::Isolate* isolate) override;
+
+    int context_menu_request_id_;  // Nonzero when request pending.
+
+    DISALLOW_COPY_AND_ASSIGN(LoadablePluginPlaceholderQt);
+};
+
+}  // namespace QtWebEngineCore
+
+#endif  // LOADALBLE_PLUGIN_PLACEHOLDER_QT_H
diff --git a/src/core/renderer/plugins/plugin_placeholder_qt.cpp b/src/core/renderer/plugins/plugin_placeholder_qt.cpp
new file mode 100644
index 000000000..a72c29873
--- /dev/null
+++ b/src/core/renderer/plugins/plugin_placeholder_qt.cpp
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Copyright 2013 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 "plugin_placeholder_qt.h"
+
+#include "content/public/renderer/render_frame.h"
+#include "content/public/renderer/v8_value_converter.h"
+#include "gin/object_template_builder.h"
+
+namespace QtWebEngineCore {
+
+// static
+gin::WrapperInfo PluginPlaceholderQt::kWrapperInfo = {gin::kEmbedderNativeGin};
+
+PluginPlaceholderQt::PluginPlaceholderQt(content::RenderFrame* render_frame,
+                                         const blink::WebPluginParams& params,
+                                         const std::string& html_data)
+    : PluginPlaceholderBase(render_frame, params, html_data)
+{}
+
+PluginPlaceholderQt::~PluginPlaceholderQt() {}
+
+v8::Local<v8::Value> PluginPlaceholderQt::GetV8Handle(v8::Isolate* isolate)
+{
+    return gin::CreateHandle(isolate, this).ToV8();
+}
+
+gin::ObjectTemplateBuilder PluginPlaceholderQt::GetObjectTemplateBuilder(v8::Isolate* isolate)
+{
+    return gin::Wrappable<PluginPlaceholderQt>::GetObjectTemplateBuilder(isolate)
+        .SetMethod<void (QtWebEngineCore::PluginPlaceholderQt::*)()>(
+            "hide", &PluginPlaceholderQt::HideCallback);
+}
+
+}  // namespace QtWebEngineCore
diff --git a/src/core/renderer/plugins/plugin_placeholder_qt.h b/src/core/renderer/plugins/plugin_placeholder_qt.h
new file mode 100644
index 000000000..a99c0d045
--- /dev/null
+++ b/src/core/renderer/plugins/plugin_placeholder_qt.h
@@ -0,0 +1,78 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+// Copyright 2013 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.
+
+#ifndef PLUGIN_PLACEHOLDER_QT_H
+#define PLUGIN_PLACEHOLDER_QT_H
+
+#include "base/macros.h"
+#include "components/plugins/renderer/plugin_placeholder.h"
+#include "gin/handle.h"
+#include "gin/wrappable.h"
+#include "third_party/blink/public/web/web_plugin_params.h"
+
+namespace QtWebEngineCore {
+
+// A basic placeholder that supports only hiding.
+class PluginPlaceholderQt final : public plugins::PluginPlaceholderBase
+                                , public gin::Wrappable<PluginPlaceholderQt>
+{
+public:
+    static gin::WrapperInfo kWrapperInfo;
+
+    PluginPlaceholderQt(content::RenderFrame* render_frame,
+                        const blink::WebPluginParams& params,
+                        const std::string& html_data);
+    ~PluginPlaceholderQt() override;
+
+private:
+    // WebViewPlugin::Delegate methods:
+    v8::Local<v8::Value> GetV8Handle(v8::Isolate* isolate) final;
+
+    // gin::Wrappable method:
+    gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
+        v8::Isolate* isolate) override;
+};
+
+}  // namespace QtWebEngineCore
+
+#endif  // PLUGIN_PLACEHOLDER_QT_H