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
|
//----------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------
namespace System.Runtime.Serialization.Json
{
using System.Threading;
using System.Xml;
using System.Diagnostics;
#if !MONO
using System.ServiceModel;
#endif
using System.Collections.Generic;
using System.Security;
class JsonClassDataContract : JsonDataContract
{
[Fx.Tag.SecurityNote(Critical = "Holds instance of CriticalHelper which keeps state that is cached statically for serialization."
+ "Static fields are marked SecurityCritical or readonly to prevent data from being modified or leaked to other components in appdomain.")]
[SecurityCritical]
JsonClassDataContractCriticalHelper helper;
[Fx.Tag.SecurityNote(Critical = "Initializes SecurityCritical field 'helper'.",
Safe = "Doesn't leak anything.")]
[SecuritySafeCritical]
public JsonClassDataContract(ClassDataContract traditionalDataContract)
: base(new JsonClassDataContractCriticalHelper(traditionalDataContract))
{
this.helper = base.Helper as JsonClassDataContractCriticalHelper;
}
internal JsonFormatClassReaderDelegate JsonFormatReaderDelegate
{
[Fx.Tag.SecurityNote(Critical = "Fetches the critical JsonFormatReaderDelegate property.",
Safe = "JsonFormatReaderDelegate only needs to be protected for write.")]
[SecuritySafeCritical]
get
{
if (helper.JsonFormatReaderDelegate == null)
{
lock (this)
{
if (helper.JsonFormatReaderDelegate == null)
{
if (TraditionalClassDataContract.IsReadOnlyContract)
{
DataContract.ThrowInvalidDataContractException(TraditionalClassDataContract.DeserializationExceptionMessage, null /*type*/);
}
JsonFormatClassReaderDelegate tempDelegate = new JsonFormatReaderGenerator().GenerateClassReader(TraditionalClassDataContract);
Thread.MemoryBarrier();
helper.JsonFormatReaderDelegate = tempDelegate;
}
}
}
return helper.JsonFormatReaderDelegate;
}
}
internal JsonFormatClassWriterDelegate JsonFormatWriterDelegate
{
[Fx.Tag.SecurityNote(Critical = "Fetches the critical JsonFormatWriterDelegate property.",
Safe = "JsonFormatWriterDelegate only needs to be protected for write.")]
[SecuritySafeCritical]
get
{
if (helper.JsonFormatWriterDelegate == null)
{
lock (this)
{
if (helper.JsonFormatWriterDelegate == null)
{
JsonFormatClassWriterDelegate tempDelegate = new JsonFormatWriterGenerator().GenerateClassWriter(TraditionalClassDataContract);
Thread.MemoryBarrier();
helper.JsonFormatWriterDelegate = tempDelegate;
}
}
}
return helper.JsonFormatWriterDelegate;
}
}
internal XmlDictionaryString[] MemberNames
{
[Fx.Tag.SecurityNote(Critical = "Fetches the critical MemberNames property.",
Safe = "MemberNames only needs to be protected for write.")]
[SecuritySafeCritical]
get { return this.helper.MemberNames; }
}
internal override string TypeName
{
[Fx.Tag.SecurityNote(Critical = "Fetches the critical TypeName property.",
Safe = "TypeName only needs to be protected for write.")]
[SecuritySafeCritical]
get { return this.helper.TypeName; }
}
ClassDataContract TraditionalClassDataContract
{
[Fx.Tag.SecurityNote(Critical = "Fetches the critical TraditionalClassDataContract property.",
Safe = "TraditionalClassDataContract only needs to be protected for write.")]
[SecuritySafeCritical]
get { return this.helper.TraditionalClassDataContract; }
}
public override object ReadJsonValueCore(XmlReaderDelegator jsonReader, XmlObjectSerializerReadContextComplexJson context)
{
jsonReader.Read();
object o = JsonFormatReaderDelegate(jsonReader, context, XmlDictionaryString.Empty, MemberNames);
jsonReader.ReadEndElement();
return o;
}
public override void WriteJsonValueCore(XmlWriterDelegator jsonWriter, object obj, XmlObjectSerializerWriteContextComplexJson context, RuntimeTypeHandle declaredTypeHandle)
{
jsonWriter.WriteAttributeString(null, JsonGlobals.typeString, null, JsonGlobals.objectString);
JsonFormatWriterDelegate(jsonWriter, obj, context, TraditionalClassDataContract, MemberNames);
}
[Fx.Tag.SecurityNote(Critical = "Holds all state used for (de)serializing types."
+ "Since the data is cached statically, we lock down access to it.")]
#if !NO_SECURITY_ATTRIBUTES
#pragma warning disable 618 // have not moved to the v4 security model yet
[SecurityCritical(SecurityCriticalScope.Everything)]
#pragma warning restore 618
#endif
class JsonClassDataContractCriticalHelper : JsonDataContractCriticalHelper
{
JsonFormatClassReaderDelegate jsonFormatReaderDelegate;
JsonFormatClassWriterDelegate jsonFormatWriterDelegate;
XmlDictionaryString[] memberNames;
ClassDataContract traditionalClassDataContract;
string typeName;
public JsonClassDataContractCriticalHelper(ClassDataContract traditionalDataContract)
: base(traditionalDataContract)
{
this.typeName = string.IsNullOrEmpty(traditionalDataContract.Namespace.Value) ? traditionalDataContract.Name.Value : string.Concat(traditionalDataContract.Name.Value, JsonGlobals.NameValueSeparatorString, XmlObjectSerializerWriteContextComplexJson.TruncateDefaultDataContractNamespace(traditionalDataContract.Namespace.Value));
this.traditionalClassDataContract = traditionalDataContract;
CopyMembersAndCheckDuplicateNames();
}
internal JsonFormatClassReaderDelegate JsonFormatReaderDelegate
{
get { return this.jsonFormatReaderDelegate; }
set { this.jsonFormatReaderDelegate = value; }
}
internal JsonFormatClassWriterDelegate JsonFormatWriterDelegate
{
get { return this.jsonFormatWriterDelegate; }
set { this.jsonFormatWriterDelegate = value; }
}
internal XmlDictionaryString[] MemberNames
{
get { return this.memberNames; }
}
internal ClassDataContract TraditionalClassDataContract
{
get { return this.traditionalClassDataContract; }
}
void CopyMembersAndCheckDuplicateNames()
{
if (traditionalClassDataContract.MemberNames != null)
{
int memberCount = traditionalClassDataContract.MemberNames.Length;
Dictionary<string, object> memberTable = new Dictionary<string, object>(memberCount);
XmlDictionaryString[] decodedMemberNames = new XmlDictionaryString[memberCount];
for (int i = 0; i < memberCount; i++)
{
if (memberTable.ContainsKey(traditionalClassDataContract.MemberNames[i].Value))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SerializationException(SR.GetString(SR.JsonDuplicateMemberNames,
DataContract.GetClrTypeFullName(traditionalClassDataContract.UnderlyingType), traditionalClassDataContract.MemberNames[i].Value)));
}
else
{
memberTable.Add(traditionalClassDataContract.MemberNames[i].Value, null);
decodedMemberNames[i] = DataContractJsonSerializer.ConvertXmlNameToJsonName(traditionalClassDataContract.MemberNames[i]);
}
}
this.memberNames = decodedMemberNames;
}
}
}
}
}
|
