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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
|
/*
* Copyright (C) 2009, 2013, 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#pragma once
#include "Blob.h"
#include "DetachedRTCDataChannel.h"
#include "ExceptionOr.h"
#include <JavaScriptCore/ArrayBuffer.h>
#include <JavaScriptCore/JSCJSValue.h>
#include <JavaScriptCore/Strong.h>
#include <wtf/Forward.h>
#include <wtf/Function.h>
#include <wtf/Gigacage.h>
#include <wtf/text/WTFString.h>
typedef const struct OpaqueJSContext* JSContextRef;
typedef const struct OpaqueJSValue* JSValueRef;
#if ENABLE(WEBASSEMBLY)
namespace JSC {
namespace Wasm {
class Module;
class MemoryHandle;
}
}
#endif
namespace WebCore {
#if ENABLE(OFFSCREEN_CANVAS_IN_WORKERS)
class DetachedOffscreenCanvas;
#endif
class IDBValue;
class MessagePort;
class ImageBitmapBacking;
class FragmentedSharedBuffer;
enum class SerializationReturnCode;
enum class SerializationErrorMode { NonThrowing,
Throwing };
enum class SerializationContext { Default,
WorkerPostMessage,
WindowPostMessage };
using ArrayBufferContentsArray = Vector<JSC::ArrayBufferContents>;
#if ENABLE(WEBASSEMBLY)
using WasmModuleArray = Vector<RefPtr<JSC::Wasm::Module>>;
using WasmMemoryHandleArray = Vector<RefPtr<JSC::Wasm::MemoryHandle>>;
#endif
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(SerializedScriptValue);
class SerializedScriptValue : public ThreadSafeRefCounted<SerializedScriptValue> {
WTF_MAKE_FAST_ALLOCATED_WITH_HEAP_IDENTIFIER(SerializedScriptValue);
public:
WEBCORE_EXPORT static ExceptionOr<Ref<SerializedScriptValue>> create(JSC::JSGlobalObject&, JSC::JSValue, Vector<JSC::Strong<JSC::JSObject>>&& transfer, Vector<RefPtr<MessagePort>>&, SerializationContext = SerializationContext::Default);
WEBCORE_EXPORT static RefPtr<SerializedScriptValue> create(JSC::JSGlobalObject&, JSC::JSValue, SerializationErrorMode = SerializationErrorMode::Throwing, SerializationContext = SerializationContext::Default);
WEBCORE_EXPORT static RefPtr<SerializedScriptValue> create(StringView);
static Ref<SerializedScriptValue> nullValue();
WEBCORE_EXPORT JSC::JSValue deserialize(JSC::JSGlobalObject&, JSC::JSGlobalObject*, SerializationErrorMode = SerializationErrorMode::Throwing);
WEBCORE_EXPORT JSC::JSValue deserialize(JSC::JSGlobalObject&, JSC::JSGlobalObject*, const Vector<RefPtr<MessagePort>>&, SerializationErrorMode = SerializationErrorMode::Throwing);
JSC::JSValue deserialize(JSC::JSGlobalObject&, JSC::JSGlobalObject*, const Vector<RefPtr<MessagePort>>&, const Vector<String>& blobURLs, const Vector<String>& blobFilePaths, SerializationErrorMode = SerializationErrorMode::Throwing);
static uint32_t wireFormatVersion();
String toString() const;
// API implementation helpers. These don't expose special behavior for ArrayBuffers or MessagePorts.
WEBCORE_EXPORT static RefPtr<SerializedScriptValue> create(JSContextRef, JSValueRef, JSValueRef* exception);
WEBCORE_EXPORT JSValueRef deserialize(JSContextRef, JSValueRef* exception);
// bool hasBlobURLs() const { return !m_blobHandles.isEmpty(); }
// Vector<String> blobURLs() const;
// const Vector<BlobURLHandle>& blobHandles() const { return m_blobHandles; }
// void writeBlobsToDiskForIndexedDB(CompletionHandler<void(IDBValue&&)>&&);
// IDBValue writeBlobsToDiskForIndexedDBSynchronously();
static Ref<SerializedScriptValue> createFromWireBytes(Vector<uint8_t>&& data)
{
return adoptRef(*new SerializedScriptValue(WTFMove(data)));
}
const Vector<uint8_t>& wireBytes() const { return m_data; }
template<class Encoder> void encode(Encoder&) const;
template<class Decoder> static RefPtr<SerializedScriptValue> decode(Decoder&);
size_t memoryCost() const { return m_memoryCost; }
WEBCORE_EXPORT ~SerializedScriptValue();
private:
static ExceptionOr<Ref<SerializedScriptValue>> create(JSC::JSGlobalObject&, JSC::JSValue, Vector<JSC::Strong<JSC::JSObject>>&& transfer, Vector<RefPtr<MessagePort>>&, SerializationErrorMode, SerializationContext);
WEBCORE_EXPORT SerializedScriptValue(
Vector<unsigned char>&&, std::unique_ptr<ArrayBufferContentsArray>&& = nullptr
#if ENABLE(WEB_RTC)
,
Vector<std::unique_ptr<DetachedRTCDataChannel>>&& = {}
#endif
);
SerializedScriptValue(
Vector<unsigned char>&&, /*const Vector<BlobURLHandle>& blobHandles,*/ std::unique_ptr<ArrayBufferContentsArray>, std::unique_ptr<ArrayBufferContentsArray> sharedBuffers /*,Vector<std::optional<ImageBitmapBacking>>&& backingStores*/
#if ENABLE(OFFSCREEN_CANVAS_IN_WORKERS)
,
Vector<std::unique_ptr<DetachedOffscreenCanvas>>&& = {}
#endif
#if ENABLE(WEB_RTC)
,
Vector<std::unique_ptr<DetachedRTCDataChannel>>&& = {}
#endif
#if ENABLE(WEBASSEMBLY)
,
std::unique_ptr<WasmModuleArray> = nullptr, std::unique_ptr<WasmMemoryHandleArray> = nullptr
#endif
);
size_t computeMemoryCost() const;
Vector<unsigned char> m_data;
std::unique_ptr<ArrayBufferContentsArray> m_arrayBufferContentsArray;
std::unique_ptr<ArrayBufferContentsArray> m_sharedBufferContentsArray;
// Vector<std::optional<ImageBitmapBacking>> m_backingStores;
#if ENABLE(OFFSCREEN_CANVAS_IN_WORKERS)
Vector<std::unique_ptr<DetachedOffscreenCanvas>> m_detachedOffscreenCanvases;
#endif
#if ENABLE(WEB_RTC)
Vector<std::unique_ptr<DetachedRTCDataChannel>> m_detachedRTCDataChannels;
#endif
#if ENABLE(WEBASSEMBLY)
std::unique_ptr<WasmModuleArray> m_wasmModulesArray;
std::unique_ptr<WasmMemoryHandleArray> m_wasmMemoryHandlesArray;
#endif
// Vector<BlobURLHandle> m_blobHandles;
size_t m_memoryCost { 0 };
};
template<class Encoder>
void SerializedScriptValue::encode(Encoder& encoder) const
{
encoder << m_data;
auto hasArray = m_arrayBufferContentsArray && m_arrayBufferContentsArray->size();
encoder << hasArray;
if (hasArray) {
encoder << static_cast<uint64_t>(m_arrayBufferContentsArray->size());
for (const auto& arrayBufferContents : *m_arrayBufferContentsArray) {
encoder << static_cast<uint64_t>(arrayBufferContents.sizeInBytes());
encoder.encodeFixedLengthData(static_cast<const uint8_t*>(arrayBufferContents.data()), arrayBufferContents.sizeInBytes(), 1);
}
}
#if ENABLE(WEB_RTC)
encoder << static_cast<uint64_t>(m_detachedRTCDataChannels.size());
for (const auto& channel : m_detachedRTCDataChannels)
encoder << *channel;
#endif
}
template<class Decoder>
RefPtr<SerializedScriptValue> SerializedScriptValue::decode(Decoder& decoder)
{
Vector<uint8_t> data;
if (!decoder.decode(data))
return nullptr;
bool hasArray;
if (!decoder.decode(hasArray))
return nullptr;
std::unique_ptr<ArrayBufferContentsArray> arrayBufferContentsArray;
if (hasArray) {
uint64_t arrayLength;
if (!decoder.decode(arrayLength))
return nullptr;
ASSERT(arrayLength);
arrayBufferContentsArray = makeUnique<ArrayBufferContentsArray>();
while (arrayLength--) {
uint64_t bufferSize;
if (!decoder.decode(bufferSize))
return nullptr;
CheckedSize checkedBufferSize = bufferSize;
if (checkedBufferSize.hasOverflowed())
return nullptr;
if (!decoder.template bufferIsLargeEnoughToContain<uint8_t>(bufferSize))
return nullptr;
auto buffer = Gigacage::tryMalloc(Gigacage::Primitive, bufferSize);
if (!buffer)
return nullptr;
if (!decoder.decodeFixedLengthData(static_cast<uint8_t*>(buffer), bufferSize, 1)) {
Gigacage::free(Gigacage::Primitive, buffer);
return nullptr;
}
arrayBufferContentsArray->append({ buffer, checkedBufferSize, ArrayBuffer::primitiveGigacageDestructor() });
}
}
#if ENABLE(WEB_RTC)
uint64_t detachedRTCDataChannelsSize;
if (!decoder.decode(detachedRTCDataChannelsSize))
return nullptr;
Vector<std::unique_ptr<DetachedRTCDataChannel>> detachedRTCDataChannels;
while (detachedRTCDataChannelsSize--) {
auto detachedRTCDataChannel = DetachedRTCDataChannel::decode(decoder);
if (!detachedRTCDataChannel)
return nullptr;
detachedRTCDataChannels.append(WTFMove(detachedRTCDataChannel));
}
#endif
return adoptRef(*new SerializedScriptValue(WTFMove(data), WTFMove(arrayBufferContentsArray)
#if ENABLE(WEB_RTC)
,
WTFMove(detachedRTCDataChannels)
#endif
));
}
}
|
