1 /****************************************************************************
2 **
3 ** Copyright (C) 2016 The Qt Company Ltd.
4 ** Contact: https://www.qt.io/licensing/
5 **
6 ** This file is part of the QtWebEngine module of the Qt Toolkit.
7 **
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** Commercial License Usage
10 ** Licensees holding valid commercial Qt licenses may use this file in
11 ** accordance with the commercial license agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and The Qt Company. For licensing terms
14 ** and conditions see https://www.qt.io/terms-conditions. For further
15 ** information use the contact form at https://www.qt.io/contact-us.
16 **
17 ** GNU Lesser General Public License Usage
18 ** Alternatively, this file may be used under the terms of the GNU Lesser
19 ** General Public License version 3 as published by the Free Software
20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the
21 ** packaging of this file. Please review the following information to
22 ** ensure the GNU Lesser General Public License version 3 requirements
23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24 **
25 ** GNU General Public License Usage
26 ** Alternatively, this file may be used under the terms of the GNU
27 ** General Public License version 2.0 or (at your option) the GNU General
28 ** Public license version 3 or any later version approved by the KDE Free
29 ** Qt Foundation. The licenses are as published by the Free Software
30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31 ** included in the packaging of this file. Please review the following
32 ** information to ensure the GNU General Public License requirements will
33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34 ** https://www.gnu.org/licenses/gpl-3.0.html.
35 **
36 ** $QT_END_LICENSE$
37 **
38 ****************************************************************************/
39 
40 // This is based on chrome/browser/renderer_host/pepper/chrome_browser_pepper_host_factory.cc:
41 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
42 // Use of this source code is governed by a BSD-style license that can be
43 // found in the LICENSE.Chromium file.
44 
45 #include "pepper_host_factory_qt.h"
46 
47 #include "base/memory/ptr_util.h"
48 #include "build/build_config.h"
49 #include "chrome/browser/renderer_host/pepper/pepper_flash_clipboard_message_filter.h"
50 #include "content/public/browser/browser_ppapi_host.h"
51 #include "ppapi/host/message_filter_host.h"
52 #include "ppapi/host/ppapi_host.h"
53 #include "ppapi/host/resource_host.h"
54 #include "ppapi/proxy/ppapi_messages.h"
55 #include "ppapi/shared_impl/ppapi_permissions.h"
56 
57 #include "pepper_flash_browser_host_qt.h"
58 #include "pepper_isolated_file_system_message_filter.h"
59 
60 using ppapi::host::MessageFilterHost;
61 using ppapi::host::ResourceMessageFilter;
62 
63 namespace QtWebEngineCore {
64 
PepperHostFactoryQt(content::BrowserPpapiHost * host)65 PepperHostFactoryQt::PepperHostFactoryQt(content::BrowserPpapiHost* host)
66     : host_(host)
67 {
68 }
69 
~PepperHostFactoryQt()70 PepperHostFactoryQt::~PepperHostFactoryQt() {}
71 
CreateResourceHost(ppapi::host::PpapiHost * host,PP_Resource resource,PP_Instance instance,const IPC::Message & message)72 std::unique_ptr<ppapi::host::ResourceHost> PepperHostFactoryQt::CreateResourceHost(ppapi::host::PpapiHost* host,
73         PP_Resource resource,
74         PP_Instance instance,
75         const IPC::Message& message)
76 {
77     DCHECK(host == host_->GetPpapiHost());
78 
79 
80     if (!host_->IsValidInstance(instance))
81         return nullptr;
82 
83     // Flash interfaces.
84     if (host_->GetPpapiHost()->permissions().HasPermission(ppapi::PERMISSION_FLASH)) {
85         switch (message.type()) {
86         case PpapiHostMsg_Flash_Create::ID:
87             return base::WrapUnique(new PepperFlashBrowserHostQt(host_, instance, resource));
88         case PpapiHostMsg_FlashClipboard_Create::ID: {
89             scoped_refptr<ResourceMessageFilter> clipboard_filter(new PepperFlashClipboardMessageFilter);
90             return base::WrapUnique(new MessageFilterHost(
91                 host_->GetPpapiHost(), instance, resource, clipboard_filter));
92         }
93         }
94     }
95 
96     // Permissions for the following interfaces will be checked at the
97     // time of the corresponding instance's methods calls (because
98     // permission check can be performed only on the UI
99     // thread). Currently these interfaces are available only for
100     // whitelisted apps which may not have access to the other private
101     // interfaces.
102     if (message.type() == PpapiHostMsg_IsolatedFileSystem_Create::ID) {
103         PepperIsolatedFileSystemMessageFilter* isolated_fs_filter = PepperIsolatedFileSystemMessageFilter::Create(instance, host_);
104         if (!isolated_fs_filter)
105             return nullptr;
106         return base::WrapUnique(
107             new MessageFilterHost(host_->GetPpapiHost(), instance, resource, isolated_fs_filter));
108     }
109 
110     return nullptr;
111 }
112 
113 }  // namespace QtWebEngineCore
114