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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsStructuredCloneContainer.h"
#include "nsCOMPtr.h"
#include "nsIGlobalObject.h"
#include "nsIVariant.h"
#include "nsIXPConnect.h"
#include "nsServiceManagerUtils.h"
#include "nsContentUtils.h"
#include "jsapi.h"
#include "xpcpublic.h"
#include "mozilla/Base64.h"
#include "mozilla/CheckedInt.h"
#include "mozilla/dom/ScriptSettings.h"
using namespace mozilla;
using namespace mozilla::dom;
NS_IMPL_ADDREF(nsStructuredCloneContainer)
NS_IMPL_RELEASE(nsStructuredCloneContainer)
NS_INTERFACE_MAP_BEGIN(nsStructuredCloneContainer)
NS_INTERFACE_MAP_ENTRY(nsIStructuredCloneContainer)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
nsStructuredCloneContainer::nsStructuredCloneContainer()
: mVersion(0)
{
}
nsStructuredCloneContainer::~nsStructuredCloneContainer()
{
}
NS_IMETHODIMP
nsStructuredCloneContainer::InitFromJSVal(JS::Handle<JS::Value> aData,
JSContext* aCx)
{
if (DataLength()) {
return NS_ERROR_FAILURE;
}
ErrorResult rv;
Write(aCx, aData, rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
mVersion = JS_STRUCTURED_CLONE_VERSION;
return NS_OK;
}
NS_IMETHODIMP
nsStructuredCloneContainer::InitFromBase64(const nsAString &aData,
uint32_t aFormatVersion)
{
if (DataLength()) {
return NS_ERROR_FAILURE;
}
NS_ConvertUTF16toUTF8 data(aData);
nsAutoCString binaryData;
nsresult rv = Base64Decode(data, binaryData);
NS_ENSURE_SUCCESS(rv, rv);
if (!CopyExternalData(binaryData.get(), binaryData.Length())) {
return NS_ERROR_OUT_OF_MEMORY;
}
mVersion = aFormatVersion;
return NS_OK;
}
nsresult
nsStructuredCloneContainer::DeserializeToJsval(JSContext* aCx,
JS::MutableHandle<JS::Value> aValue)
{
aValue.setNull();
JS::Rooted<JS::Value> jsStateObj(aCx);
ErrorResult rv;
Read(aCx, &jsStateObj, rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
aValue.set(jsStateObj);
return NS_OK;
}
NS_IMETHODIMP
nsStructuredCloneContainer::DeserializeToVariant(JSContext* aCx,
nsIVariant** aData)
{
NS_ENSURE_ARG_POINTER(aData);
*aData = nullptr;
if (!DataLength()) {
return NS_ERROR_FAILURE;
}
// Deserialize to a JS::Value.
JS::Rooted<JS::Value> jsStateObj(aCx);
nsresult rv = DeserializeToJsval(aCx, &jsStateObj);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// Now wrap the JS::Value as an nsIVariant.
nsCOMPtr<nsIVariant> varStateObj;
nsCOMPtr<nsIXPConnect> xpconnect = do_GetService(nsIXPConnect::GetCID());
NS_ENSURE_STATE(xpconnect);
xpconnect->JSValToVariant(aCx, jsStateObj, getter_AddRefs(varStateObj));
NS_ENSURE_STATE(varStateObj);
varStateObj.forget(aData);
return NS_OK;
}
NS_IMETHODIMP
nsStructuredCloneContainer::GetDataAsBase64(nsAString &aOut)
{
aOut.Truncate();
if (!DataLength()) {
return NS_ERROR_FAILURE;
}
if (HasClonedDOMObjects()) {
return NS_ERROR_FAILURE;
}
auto iter = Data().Start();
size_t size = Data().Size();
CheckedInt<nsAutoCString::size_type> sizeCheck(size);
if (!sizeCheck.isValid()) {
return NS_ERROR_FAILURE;
}
nsAutoCString binaryData;
binaryData.SetLength(size);
Data().ReadBytes(iter, binaryData.BeginWriting(), size);
nsAutoCString base64Data;
nsresult rv = Base64Encode(binaryData, base64Data);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
CopyASCIItoUTF16(base64Data, aOut);
return NS_OK;
}
NS_IMETHODIMP
nsStructuredCloneContainer::GetSerializedNBytes(uint64_t* aSize)
{
NS_ENSURE_ARG_POINTER(aSize);
if (!DataLength()) {
return NS_ERROR_FAILURE;
}
*aSize = DataLength();
return NS_OK;
}
NS_IMETHODIMP
nsStructuredCloneContainer::GetFormatVersion(uint32_t* aFormatVersion)
{
NS_ENSURE_ARG_POINTER(aFormatVersion);
if (!DataLength()) {
return NS_ERROR_FAILURE;
}
*aFormatVersion = mVersion;
return NS_OK;
}
|
