1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/****************************************************************************
**
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
// based on chrome/browser/plugins/plugin_response_interceptor_url_loader_throttle.cc
// Copyright 2018 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_response_interceptor_url_loader_throttle.h"
#include "base/bind.h"
#include "base/guid.h"
#include "base/task/post_task.h"
#include "chrome/browser/extensions/api/streams_private/streams_private_api.h"
#include "content/public/browser/browser_context.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 "extensions/browser/guest_view/mime_handler_view/mime_handler_view_attach_helper.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest_handlers/mime_types_handler.h"
#include "third_party/blink/public/mojom/loader/transferrable_url_loader.mojom.h"
#include "extensions/extension_system_qt.h"
#include "web_contents_delegate_qt.h"
#include "web_engine_settings.h"
#include <string>
namespace QtWebEngineCore {
PluginResponseInterceptorURLLoaderThrottle::PluginResponseInterceptorURLLoaderThrottle(
content::BrowserContext *browser_context,
network::mojom::RequestDestination request_destination,
int frame_tree_node_id)
: m_browser_context(browser_context), m_request_destination(request_destination), m_frame_tree_node_id(frame_tree_node_id)
{}
void PluginResponseInterceptorURLLoaderThrottle::WillProcessResponse(const GURL &response_url,
network::mojom::URLResponseHead *response_head,
bool *defer)
{
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (content::download_utils::MustDownload(response_url, response_head->headers.get(), response_head->mime_type))
return;
content::WebContents *web_contents = content::WebContents::FromFrameTreeNodeId(m_frame_tree_node_id);
if (!web_contents)
return;
std::string extension_id;
if (response_head->mime_type == "application/pdf")
extension_id = extension_misc::kPdfExtensionId;
if (extension_id.empty())
return;
WebContentsDelegateQt *contentsDelegate = static_cast<WebContentsDelegateQt *>(web_contents->GetDelegate());
if (!contentsDelegate)
return;
WebEngineSettings *settings = contentsDelegate->webEngineSettings();
if (!settings->testAttribute(QWebEngineSettings::PdfViewerEnabled)
|| !settings->testAttribute(QWebEngineSettings::PluginsEnabled)) {
// PluginServiceFilterQt will inform the URLLoader about the disabled state of plugins
// and we can expect the download to be triggered automatically. It's unnecessary to
// go further and start the guest view embedding process.
return;
}
// Chrome's PDF Extension does not work properly in the face of a restrictive
// Content-Security-Policy, and does not currently respect the policy anyway.
// Ignore CSP served on a PDF response. https://crbug.com/271452
if (extension_id == extension_misc::kPdfExtensionId && response_head->headers)
response_head->headers->RemoveHeader("Content-Security-Policy");
MimeTypesHandler::ReportUsedHandler(extension_id);
std::string view_id = base::GenerateGUID();
// The string passed down to the original client with the response body.
std::string payload = view_id;
mojo::PendingRemote<network::mojom::URLLoader> dummy_new_loader;
ignore_result(dummy_new_loader.InitWithNewPipeAndPassReceiver());
mojo::Remote<network::mojom::URLLoaderClient> new_client;
mojo::PendingReceiver<network::mojom::URLLoaderClient> new_client_receiver =
new_client.BindNewPipeAndPassReceiver();
uint32_t data_pipe_size = 64U;
// Provide the MimeHandlerView code a chance to override the payload. This is
// the case where the resource is handled by frame-based MimeHandlerView.
*defer = extensions::MimeHandlerViewAttachHelper::OverrideBodyForInterceptedResponse(
m_frame_tree_node_id, response_url, response_head->mime_type, view_id,
&payload, &data_pipe_size,
base::BindOnce(
&PluginResponseInterceptorURLLoaderThrottle::ResumeLoad,
weak_factory_.GetWeakPtr()));
mojo::ScopedDataPipeProducerHandle producer_handle;
mojo::ScopedDataPipeConsumerHandle consumer_handle;
CHECK_EQ(MOJO_RESULT_OK, mojo::CreateDataPipe(data_pipe_size, producer_handle, consumer_handle));
uint32_t len = static_cast<uint32_t>(payload.size());
CHECK_EQ(MOJO_RESULT_OK,
producer_handle->WriteData(
payload.c_str(), &len, MOJO_WRITE_DATA_FLAG_ALL_OR_NONE));
new_client->OnStartLoadingResponseBody(std::move(consumer_handle));
network::URLLoaderCompletionStatus status(net::OK);
status.decoded_body_length = len;
new_client->OnComplete(status);
mojo::PendingRemote<network::mojom::URLLoader> original_loader;
mojo::PendingReceiver<network::mojom::URLLoaderClient> original_client;
delegate_->InterceptResponse(std::move(dummy_new_loader),
std::move(new_client_receiver), &original_loader,
&original_client);
// Make a deep copy of URLResponseHead before passing it cross-thread.
auto deep_copied_response = response_head->Clone();
if (response_head->headers) {
deep_copied_response->headers =
base::MakeRefCounted<net::HttpResponseHeaders>(
response_head->headers->raw_headers());
}
auto transferrable_loader = blink::mojom::TransferrableURLLoader::New();
transferrable_loader->url = GURL(
extensions::Extension::GetBaseURLFromExtensionId(extension_id).spec() +
base::GenerateGUID());
transferrable_loader->url_loader = std::move(original_loader);
transferrable_loader->url_loader_client = std::move(original_client);
transferrable_loader->head = std::move(deep_copied_response);
transferrable_loader->head->intercepted_by_plugin = true;
bool embedded = m_request_destination !=
network::mojom::RequestDestination::kDocument;
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(
&extensions::StreamsPrivateAPI::SendExecuteMimeTypeHandlerEvent,
extension_id, view_id, embedded, m_frame_tree_node_id,
-1 /* render_process_id */, -1 /* render_frame_id */,
std::move(transferrable_loader), response_url));
}
void PluginResponseInterceptorURLLoaderThrottle::ResumeLoad()
{
delegate_->Resume();
}
} // namespace QtWebEngineCore
|
