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
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/*
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "third_party/blink/renderer/modules/plugins/dom_plugin_array.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/navigator.h"
#include "third_party/blink/renderer/core/page/page.h"
#include "third_party/blink/renderer/core/page/plugin_data.h"
#include "third_party/blink/renderer/modules/plugins/dom_mime_type_array.h"
#include "third_party/blink/renderer/modules/plugins/navigator_plugins.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/text/atomic_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
DOMPluginArray::DOMPluginArray(LocalDOMWindow* window,
bool should_return_fixed_plugin_data)
: ExecutionContextLifecycleObserver(window),
PluginsChangedObserver(window ? window->GetFrame()->GetPage() : nullptr),
should_return_fixed_plugin_data_(should_return_fixed_plugin_data) {
UpdatePluginData();
}
void DOMPluginArray::Trace(Visitor* visitor) const {
visitor->Trace(dom_plugins_);
ScriptWrappable::Trace(visitor);
ExecutionContextLifecycleObserver::Trace(visitor);
PluginsChangedObserver::Trace(visitor);
}
unsigned DOMPluginArray::length() const {
return dom_plugins_.size();
}
DOMPlugin* DOMPluginArray::item(unsigned index) {
if (index >= dom_plugins_.size())
return nullptr;
if (!dom_plugins_[index]) {
if (should_return_fixed_plugin_data_)
return nullptr;
dom_plugins_[index] = MakeGarbageCollected<DOMPlugin>(
DomWindow(), *GetPluginData()->Plugins()[index]);
}
return dom_plugins_[index].Get();
}
DOMPlugin* DOMPluginArray::namedItem(const AtomicString& property_name) {
if (should_return_fixed_plugin_data_) {
for (const auto& plugin : dom_plugins_) {
if (plugin->name() == property_name)
return plugin.Get();
}
return nullptr;
}
PluginData* data = GetPluginData();
if (!data)
return nullptr;
for (const Member<PluginInfo>& plugin_info : data->Plugins()) {
if (plugin_info->Name() == property_name) {
unsigned index =
static_cast<unsigned>(&plugin_info - &data->Plugins()[0]);
return item(index);
}
}
return nullptr;
}
void DOMPluginArray::NamedPropertyEnumerator(Vector<String>& property_names,
ExceptionState&) const {
if (should_return_fixed_plugin_data_) {
property_names.ReserveInitialCapacity(dom_plugins_.size());
for (const auto& plugin : dom_plugins_)
property_names.UncheckedAppend(plugin->name());
return;
}
PluginData* data = GetPluginData();
if (!data)
return;
property_names.ReserveInitialCapacity(data->Plugins().size());
for (const PluginInfo* plugin_info : data->Plugins()) {
property_names.UncheckedAppend(plugin_info->Name());
}
}
bool DOMPluginArray::NamedPropertyQuery(const AtomicString& property_name,
ExceptionState& exception_state) const {
Vector<String> properties;
NamedPropertyEnumerator(properties, exception_state);
return properties.Contains(property_name);
}
void DOMPluginArray::refresh(bool reload) {
if (!DomWindow())
return;
PluginData::RefreshBrowserSidePluginCache();
if (PluginData* data = GetPluginData())
data->ResetPluginData();
for (Frame* frame = DomWindow()->GetFrame()->GetPage()->MainFrame(); frame;
frame = frame->Tree().TraverseNext()) {
auto* local_frame = DynamicTo<LocalFrame>(frame);
if (!local_frame)
continue;
Navigator& navigator = *local_frame->DomWindow()->navigator();
NavigatorPlugins::plugins(navigator)->UpdatePluginData();
NavigatorPlugins::mimeTypes(navigator)->UpdatePluginData();
}
if (reload)
DomWindow()->GetFrame()->Reload(WebFrameLoadType::kReload);
}
PluginData* DOMPluginArray::GetPluginData() const {
return DomWindow() ? DomWindow()->GetFrame()->GetPluginData() : nullptr;
}
namespace {
DOMPlugin* MakeFakePlugin(String plugin_name, LocalDOMWindow* window) {
String description = "Portable Document Format";
String filename = "internal-pdf-viewer";
auto* plugin_info =
MakeGarbageCollected<PluginInfo>(plugin_name, filename, description,
/*background_color=*/Color::kTransparent,
/*may_use_external_handler=*/false);
Vector<String> extensions{"pdf"};
for (const char* mime_type : {"application/pdf", "text/pdf"}) {
auto* mime_info = MakeGarbageCollected<MimeClassInfo>(
mime_type, description, *plugin_info, extensions);
plugin_info->AddMimeType(mime_info);
}
return MakeGarbageCollected<DOMPlugin>(window, *plugin_info);
}
} // namespace
HeapVector<Member<DOMMimeType>> DOMPluginArray::GetFixedMimeTypeArray() {
DCHECK(should_return_fixed_plugin_data_);
HeapVector<Member<DOMMimeType>> mimetypes;
if (dom_plugins_.empty())
return mimetypes;
DCHECK_EQ(dom_plugins_[0]->length(), 2u);
mimetypes.push_back(dom_plugins_[0]->item(0));
mimetypes.push_back(dom_plugins_[0]->item(1));
return mimetypes;
}
bool DOMPluginArray::IsPdfViewerAvailable() {
auto* data = GetPluginData();
if (!data)
return false;
for (const Member<MimeClassInfo>& mime_info : data->Mimes()) {
if (mime_info->Type() == "application/pdf")
return true;
}
return false;
}
void DOMPluginArray::UpdatePluginData() {
if (should_return_fixed_plugin_data_) {
dom_plugins_.clear();
if (IsPdfViewerAvailable()) {
// See crbug.com/1164635 and https://github.com/whatwg/html/pull/6738.
// To reduce fingerprinting and make plugins/mimetypes more
// interoperable, this is the spec'd, hard-coded list of plugins:
Vector<String> plugins{"PDF Viewer", "Chrome PDF Viewer",
"Chromium PDF Viewer", "Microsoft Edge PDF Viewer",
"WebKit built-in PDF"};
for (auto name : plugins)
dom_plugins_.push_back(MakeFakePlugin(name, DomWindow()));
}
return;
}
PluginData* data = GetPluginData();
if (!data) {
dom_plugins_.clear();
return;
}
HeapVector<Member<DOMPlugin>> old_dom_plugins(std::move(dom_plugins_));
dom_plugins_.clear();
dom_plugins_.resize(data->Plugins().size());
for (Member<DOMPlugin>& plugin : old_dom_plugins) {
if (plugin) {
for (const Member<PluginInfo>& plugin_info : data->Plugins()) {
if (plugin->name() == plugin_info->Name()) {
unsigned index =
static_cast<unsigned>(&plugin_info - &data->Plugins()[0]);
dom_plugins_[index] = plugin;
}
}
}
}
}
void DOMPluginArray::ContextDestroyed() {
dom_plugins_.clear();
}
void DOMPluginArray::PluginsChanged() {
UpdatePluginData();
}
} // namespace blink
|
