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
|
/*
* 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_mime_type_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/settings.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/platform/wtf/text/atomic_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
DOMMimeTypeArray::DOMMimeTypeArray(LocalDOMWindow* window)
: ExecutionContextLifecycleObserver(window),
PluginsChangedObserver(window ? window->GetFrame()->GetPage() : nullptr) {
UpdatePluginData();
}
void DOMMimeTypeArray::Trace(Visitor* visitor) const {
visitor->Trace(dom_mime_types_);
ScriptWrappable::Trace(visitor);
ExecutionContextLifecycleObserver::Trace(visitor);
}
unsigned DOMMimeTypeArray::length() const {
return dom_mime_types_.size();
}
DOMMimeType* DOMMimeTypeArray::item(unsigned index) {
if (index >= dom_mime_types_.size())
return nullptr;
if (!dom_mime_types_[index]) {
dom_mime_types_[index] = MakeGarbageCollected<DOMMimeType>(
DomWindow(), *GetPluginData()->Mimes()[index]);
}
return dom_mime_types_[index];
}
bool DOMMimeTypeArray::ShouldReturnEmptyPluginData(Frame* frame) {
// See https://crbug.com/1171373 for more context. P/Nacl plugins will
// be supported on some platforms through at least June, 2022. Since
// some apps need to use feature detection, we need to continue returning
// plugin data for those.
if (frame && frame->GetSettings()->GetAllowNonEmptyNavigatorPlugins())
return false;
// Otherwise, depend on the feature flag, which can be disabled via
// Finch killswitch.
return base::FeatureList::IsEnabled(features::kNavigatorPluginsEmpty);
}
bool DOMMimeTypeArray::ShouldReturnEmptyPluginData() const {
return ShouldReturnEmptyPluginData(DomWindow() ? DomWindow()->GetFrame()
: nullptr);
}
DOMMimeType* DOMMimeTypeArray::namedItem(const AtomicString& property_name) {
if (ShouldReturnEmptyPluginData())
return nullptr;
PluginData* data = GetPluginData();
if (!data)
return nullptr;
for (const Member<MimeClassInfo>& mime : data->Mimes()) {
if (mime->Type() == property_name) {
unsigned index = static_cast<unsigned>(&mime - &data->Mimes()[0]);
return item(index);
}
}
return nullptr;
}
void DOMMimeTypeArray::NamedPropertyEnumerator(Vector<String>& property_names,
ExceptionState&) const {
if (ShouldReturnEmptyPluginData())
return;
PluginData* data = GetPluginData();
if (!data)
return;
property_names.ReserveInitialCapacity(data->Mimes().size());
for (const MimeClassInfo* mime_info : data->Mimes()) {
property_names.UncheckedAppend(mime_info->Type());
}
}
bool DOMMimeTypeArray::NamedPropertyQuery(const AtomicString& property_name,
ExceptionState&) const {
PluginData* data = GetPluginData();
if (!data)
return false;
return data->SupportsMimeType(property_name);
}
PluginData* DOMMimeTypeArray::GetPluginData() const {
if (!DomWindow())
return nullptr;
return DomWindow()->GetFrame()->GetPluginData();
}
void DOMMimeTypeArray::UpdatePluginData() {
if (ShouldReturnEmptyPluginData()) {
dom_mime_types_.clear();
return;
}
PluginData* data = GetPluginData();
if (!data) {
dom_mime_types_.clear();
return;
}
HeapVector<Member<DOMMimeType>> old_dom_mime_types(
std::move(dom_mime_types_));
dom_mime_types_.clear();
dom_mime_types_.resize(data->Mimes().size());
for (Member<DOMMimeType>& mime : old_dom_mime_types) {
if (mime) {
for (const Member<MimeClassInfo>& mime_info : data->Mimes()) {
if (mime->type() == mime_info->Type()) {
unsigned index =
static_cast<unsigned>(&mime_info - &data->Mimes()[0]);
dom_mime_types_[index] = mime;
}
}
}
}
}
void DOMMimeTypeArray::ContextDestroyed() {
dom_mime_types_.clear();
}
void DOMMimeTypeArray::PluginsChanged() {
UpdatePluginData();
}
} // namespace blink
|
