1 files changed, 135 insertions, 0 deletions
diff --git a/src/core/net/plugin_response_interceptor_url_loader_throttle.cpp b/src/core/net/plugin_response_interceptor_url_loader_throttle.cpp
new file mode 100644
index 000000000..cfd011ade
--- /dev/null
+++ b/src/core/net/plugin_response_interceptor_url_loader_throttle.cpp
@@ -0,0 +1,135 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "plugin_response_interceptor_url_loader_throttle.h"
+
+#include "base/bind.h"
+#include "base/task/post_task.h"
+#include "content/public/browser/browser_task_traits.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/download_manager.h"
+#include "content/public/browser/download_request_utils.h"
+#include "content/public/browser/download_utils.h"
+#include "content/public/common/resource_type.h"
+#include "extensions/common/constants.h"
+#include "extensions/common/extension.h"
+
+#include "extensions/extension_system_qt.h"
+#include "profile_adapter.h"
+#include "profile_io_data_qt.h"
+#include "profile_qt.h"
+#include "web_contents_delegate_qt.h"
+
+#include <string>
+
+namespace QtWebEngineCore {
+
+void onPdfStreamIntercepted(const GURL &original_url, std::string extension_id, int frame_tree_node_id)
+{
+    content::WebContents *web_contents = content::WebContents::FromFrameTreeNodeId(frame_tree_node_id);
+    if (!web_contents)
+        return;
+
+    WebContentsDelegateQt *contentsDelegate = static_cast<WebContentsDelegateQt *>(web_contents->GetDelegate());
+    if (!contentsDelegate)
+        return;
+
+    WebEngineSettings *settings = contentsDelegate->webEngineSettings();
+    if (!settings->testAttribute(WebEngineSettings::PdfViewerEnabled)
+        || !settings->testAttribute(WebEngineSettings::PluginsEnabled)) {
+        // If the applications has been set up to always download PDF files to open them in an
+        // external viewer, trigger the download.
+        std::unique_ptr<download::DownloadUrlParameters> params(
+                content::DownloadRequestUtils::CreateDownloadForWebContentsMainFrame(web_contents, original_url,
+                                                                                     MISSING_TRAFFIC_ANNOTATION));
+        content::BrowserContext::GetDownloadManager(web_contents->GetBrowserContext())->DownloadUrl(std::move(params));
+        return;
+    }
+
+    // The URL passes the original pdf resource url, that will be requested
+    // by the pdf viewer extension page.
+    content::NavigationController::LoadURLParams params(
+            GURL(base::StringPrintf("%s://%s/index.html?%s", extensions::kExtensionScheme,
+                                    extension_id.c_str(), original_url.spec().c_str())));
+
+    params.frame_tree_node_id = frame_tree_node_id;
+    web_contents->GetController().LoadURLWithParams(params);
+}
+
+
+PluginResponseInterceptorURLLoaderThrottle::PluginResponseInterceptorURLLoaderThrottle(
+        content::ResourceContext *resource_context, int resource_type, int frame_tree_node_id)
+    : m_resource_context(resource_context), m_resource_type(resource_type), m_frame_tree_node_id(frame_tree_node_id)
+{}
+
+PluginResponseInterceptorURLLoaderThrottle::PluginResponseInterceptorURLLoaderThrottle(
+        content::BrowserContext *browser_context, int resource_type, int frame_tree_node_id)
+    : m_browser_context(browser_context), m_resource_type(resource_type), m_frame_tree_node_id(frame_tree_node_id)
+{}
+
+void PluginResponseInterceptorURLLoaderThrottle::WillProcessResponse(const GURL &response_url,
+                                                                     network::ResourceResponseHead *response_head,
+                                                                     bool *defer)
+{
+    Q_UNUSED(defer);
+    if (content::download_utils::MustDownload(response_url, response_head->headers.get(), response_head->mime_type))
+        return;
+
+    if (m_resource_context) {
+        DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
+    } else {
+        DCHECK(m_browser_context);
+        DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+    }
+
+    std::string extension_id;
+    // FIXME: We should use extensions::InfoMap in the future:
+    if (response_head->mime_type == "application/pdf")
+        extension_id = extension_misc::kPdfExtensionId;
+    if (extension_id.empty())
+        return;
+
+    base::PostTaskWithTraits(FROM_HERE, {content::BrowserThread::UI},
+                             base::BindOnce(&onPdfStreamIntercepted,
+                                            response_url,
+                                            extension_id,
+                                            m_frame_tree_node_id));
+}
+
+} // namespace QtWebEngineCore