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
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/*
Copyright (C) 2009-2011 Jeroen Frijters
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
Jeroen Frijters
jeroen@frijters.net
*/
using System;
using System.Runtime.Serialization;
using System.Security;
using System.Security.Permissions;
#if STATIC_COMPILER
using IKVM.Reflection;
using IKVM.Reflection.Emit;
using Type = IKVM.Reflection.Type;
#else
using System.Reflection;
using System.Reflection.Emit;
#endif
namespace IKVM.Internal
{
// This class deals with .NET serialization. When a class is Java serializable it will attempt to automagically make it .NET serializable.
static class Serialization
{
private static readonly CustomAttributeBuilder serializableAttribute = new CustomAttributeBuilder(JVM.Import(typeof(SerializableAttribute)).GetConstructor(Type.EmptyTypes), new object[0]);
private static readonly CustomAttributeBuilder securityCriticalAttribute = new CustomAttributeBuilder(JVM.Import(typeof(SecurityCriticalAttribute)).GetConstructor(Type.EmptyTypes), new object[0]);
private static readonly TypeWrapper iserializable = ClassLoaderWrapper.GetWrapperFromType(JVM.Import(typeof(ISerializable)));
private static readonly TypeWrapper iobjectreference = ClassLoaderWrapper.GetWrapperFromType(JVM.Import(typeof(IObjectReference)));
private static readonly TypeWrapper externalizable = ClassLoaderWrapper.LoadClassCritical("java.io.Externalizable");
private static readonly PermissionSet psetSerializationFormatter;
static Serialization()
{
psetSerializationFormatter = new PermissionSet(PermissionState.None);
psetSerializationFormatter.AddPermission(new SecurityPermission(SecurityPermissionFlag.SerializationFormatter));
}
internal static bool IsISerializable(TypeWrapper wrapper)
{
return wrapper == iserializable;
}
private static bool IsSafeForAutomagicSerialization(TypeWrapper wrapper)
{
if (wrapper.TypeAsBaseType.IsSerializable)
{
return false;
}
if (wrapper.IsSubTypeOf(iserializable))
{
return false;
}
if (wrapper.IsSubTypeOf(iobjectreference))
{
return false;
}
if (wrapper.GetMethodWrapper("GetObjectData", "(Lcli.System.Runtime.Serialization.SerializationInfo;Lcli.System.Runtime.Serialization.StreamingContext;)V", false) != null)
{
return false;
}
if (wrapper.GetMethodWrapper("<init>", "(Lcli.System.Runtime.Serialization.SerializationInfo;Lcli.System.Runtime.Serialization.StreamingContext;)V", false) != null)
{
return false;
}
return true;
}
internal static MethodBuilder AddAutomagicSerialization(DynamicTypeWrapper wrapper, TypeBuilder typeBuilder)
{
MethodBuilder serializationCtor = null;
if ((wrapper.Modifiers & IKVM.Attributes.Modifiers.Enum) != 0)
{
MarkSerializable(typeBuilder);
}
else if (wrapper.IsSubTypeOf(CoreClasses.java.io.Serializable.Wrapper) && IsSafeForAutomagicSerialization(wrapper))
{
if (wrapper.IsSubTypeOf(externalizable))
{
MethodWrapper ctor = wrapper.GetMethodWrapper("<init>", "()V", false);
if (ctor != null && ctor.IsPublic)
{
MarkSerializable(typeBuilder);
ctor.Link();
serializationCtor = AddConstructor(typeBuilder, ctor, null, true);
if (!wrapper.BaseTypeWrapper.IsSubTypeOf(CoreClasses.java.io.Serializable.Wrapper))
{
AddGetObjectData(typeBuilder);
}
if (wrapper.BaseTypeWrapper.GetMethodWrapper("readResolve", "()Ljava.lang.Object;", true) != null)
{
RemoveReadResolve(typeBuilder);
}
}
}
else if (wrapper.BaseTypeWrapper.IsSubTypeOf(CoreClasses.java.io.Serializable.Wrapper))
{
MethodBase baseCtor = wrapper.GetBaseSerializationConstructor();
if (baseCtor != null && (baseCtor.IsFamily || baseCtor.IsFamilyOrAssembly))
{
MarkSerializable(typeBuilder);
serializationCtor = AddConstructor(typeBuilder, null, baseCtor, false);
AddReadResolve(wrapper, typeBuilder);
}
}
else
{
MethodWrapper baseCtor = wrapper.BaseTypeWrapper.GetMethodWrapper("<init>", "()V", false);
if (baseCtor != null && baseCtor.IsAccessibleFrom(wrapper.BaseTypeWrapper, wrapper, wrapper))
{
MarkSerializable(typeBuilder);
AddGetObjectData(typeBuilder);
#if STATIC_COMPILER
// because the base type can be a __WorkaroundBaseClass__, we may need to replace the constructor
baseCtor = ((AotTypeWrapper)wrapper).ReplaceMethodWrapper(baseCtor);
#endif
baseCtor.Link();
serializationCtor = AddConstructor(typeBuilder, baseCtor, null, true);
AddReadResolve(wrapper, typeBuilder);
}
}
}
return serializationCtor;
}
internal static MethodBuilder AddAutomagicSerializationToWorkaroundBaseClass(TypeBuilder typeBuilderWorkaroundBaseClass, MethodBase baseCtor)
{
if (typeBuilderWorkaroundBaseClass.BaseType.IsSerializable)
{
typeBuilderWorkaroundBaseClass.SetCustomAttribute(serializableAttribute);
if (baseCtor != null && (baseCtor.IsFamily || baseCtor.IsFamilyOrAssembly))
{
return AddConstructor(typeBuilderWorkaroundBaseClass, null, baseCtor, false);
}
}
return null;
}
internal static void MarkSerializable(TypeBuilder tb)
{
tb.SetCustomAttribute(serializableAttribute);
}
internal static void AddGetObjectData(TypeBuilder tb)
{
string name = tb.IsSealed
? "System.Runtime.Serialization.ISerializable.GetObjectData"
: "GetObjectData";
MethodAttributes attr = tb.IsSealed
? MethodAttributes.Private | MethodAttributes.Virtual | MethodAttributes.NewSlot | MethodAttributes.Final
: MethodAttributes.Family | MethodAttributes.Virtual | MethodAttributes.NewSlot | MethodAttributes.CheckAccessOnOverride;
tb.AddInterfaceImplementation(JVM.Import(typeof(ISerializable)));
MethodBuilder getObjectData = tb.DefineMethod(name, attr, null,
new Type[] { JVM.Import(typeof(SerializationInfo)), JVM.Import(typeof(StreamingContext)) });
getObjectData.SetCustomAttribute(securityCriticalAttribute);
AttributeHelper.HideFromJava(getObjectData);
getObjectData.AddDeclarativeSecurity(SecurityAction.Demand, psetSerializationFormatter);
tb.DefineMethodOverride(getObjectData, JVM.Import(typeof(ISerializable)).GetMethod("GetObjectData"));
CodeEmitter ilgen = CodeEmitter.Create(getObjectData);
ilgen.Emit(OpCodes.Ldarg_0);
ilgen.Emit(OpCodes.Ldarg_1);
TypeWrapper serializationHelper = ClassLoaderWrapper.LoadClassCritical("ikvm.internal.Serialization");
MethodWrapper mw = serializationHelper.GetMethodWrapper("writeObject", "(Ljava.lang.Object;Lcli.System.Runtime.Serialization.SerializationInfo;)V", false);
mw.Link();
mw.EmitCall(ilgen);
ilgen.Emit(OpCodes.Ret);
ilgen.DoEmit();
}
private static MethodBuilder AddConstructor(TypeBuilder tb, MethodWrapper defaultConstructor, MethodBase serializationConstructor, bool callReadObject)
{
MethodBuilder ctor = ReflectUtil.DefineConstructor(tb, MethodAttributes.Family, new Type[] { JVM.Import(typeof(SerializationInfo)), JVM.Import(typeof(StreamingContext)) });
AttributeHelper.HideFromJava(ctor);
ctor.AddDeclarativeSecurity(SecurityAction.Demand, psetSerializationFormatter);
CodeEmitter ilgen = CodeEmitter.Create(ctor);
ilgen.Emit(OpCodes.Ldarg_0);
if (defaultConstructor != null)
{
defaultConstructor.EmitCall(ilgen);
}
else
{
ilgen.Emit(OpCodes.Ldarg_1);
ilgen.Emit(OpCodes.Ldarg_2);
ilgen.Emit(OpCodes.Call, serializationConstructor);
}
if (callReadObject)
{
ilgen.Emit(OpCodes.Ldarg_0);
ilgen.Emit(OpCodes.Ldarg_1);
TypeWrapper serializationHelper = ClassLoaderWrapper.LoadClassCritical("ikvm.internal.Serialization");
MethodWrapper mw = serializationHelper.GetMethodWrapper("readObject", "(Ljava.lang.Object;Lcli.System.Runtime.Serialization.SerializationInfo;)V", false);
mw.Link();
mw.EmitCall(ilgen);
}
ilgen.Emit(OpCodes.Ret);
ilgen.DoEmit();
return ctor;
}
private static void AddReadResolve(DynamicTypeWrapper wrapper, TypeBuilder tb)
{
MethodWrapper mw = wrapper.GetMethodWrapper("readResolve", "()Ljava.lang.Object;", false);
if (mw != null && !wrapper.IsSubTypeOf(iobjectreference))
{
tb.AddInterfaceImplementation(JVM.Import(typeof(IObjectReference)));
MethodBuilder getRealObject = tb.DefineMethod("IObjectReference.GetRealObject", MethodAttributes.Private | MethodAttributes.Virtual | MethodAttributes.NewSlot | MethodAttributes.Final,
Types.Object, new Type[] { JVM.Import(typeof(StreamingContext)) });
getRealObject.SetCustomAttribute(securityCriticalAttribute);
AttributeHelper.HideFromJava(getRealObject);
tb.DefineMethodOverride(getRealObject, JVM.Import(typeof(IObjectReference)).GetMethod("GetRealObject"));
CodeEmitter ilgen = CodeEmitter.Create(getRealObject);
mw.Link();
if (!wrapper.IsFinal)
{
// readResolve is only applicable if it exists on the actual type of the object, so if we're a subclass don't call it
ilgen.Emit(OpCodes.Ldarg_0);
ilgen.Emit(OpCodes.Callvirt, Compiler.getTypeMethod);
ilgen.Emit(OpCodes.Ldtoken, wrapper.TypeAsBaseType);
ilgen.Emit(OpCodes.Call, Compiler.getTypeFromHandleMethod);
CodeEmitterLabel label = ilgen.DefineLabel();
ilgen.EmitBeq(label);
ilgen.Emit(OpCodes.Ldarg_0);
ilgen.Emit(OpCodes.Ret);
ilgen.MarkLabel(label);
}
ilgen.Emit(OpCodes.Ldarg_0);
mw.EmitCall(ilgen);
ilgen.Emit(OpCodes.Ret);
ilgen.DoEmit();
}
}
private static void RemoveReadResolve(TypeBuilder tb)
{
tb.AddInterfaceImplementation(JVM.Import(typeof(IObjectReference)));
MethodBuilder getRealObject = tb.DefineMethod("IObjectReference.GetRealObject", MethodAttributes.Private | MethodAttributes.Virtual | MethodAttributes.NewSlot | MethodAttributes.Final,
Types.Object, new Type[] { JVM.Import(typeof(StreamingContext)) });
getRealObject.SetCustomAttribute(securityCriticalAttribute);
AttributeHelper.HideFromJava(getRealObject);
tb.DefineMethodOverride(getRealObject, JVM.Import(typeof(IObjectReference)).GetMethod("GetRealObject"));
CodeEmitter ilgen = CodeEmitter.Create(getRealObject);
ilgen.Emit(OpCodes.Ldarg_0);
ilgen.Emit(OpCodes.Ret);
ilgen.DoEmit();
}
}
}
|
