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
|
/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program 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 General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package proguard.obfuscate;
import proguard.classfile.*;
import proguard.classfile.attribute.*;
import proguard.classfile.attribute.visitor.*;
import proguard.classfile.constant.ClassConstant;
import proguard.classfile.constant.visitor.ConstantVisitor;
import proguard.classfile.util.*;
import proguard.classfile.visitor.*;
/**
* This <code>ClassVisitor</code> and <code>MemberVisitor</code>
* marks names of the classes and class members it visits. The marked names
* will remain unchanged in the obfuscation step.
*
* @see ClassObfuscator
* @see MemberObfuscator
*
* @author Eric Lafortune
*/
class NameMarker
extends SimplifiedVisitor
implements ClassVisitor,
MemberVisitor,
AttributeVisitor,
InnerClassesInfoVisitor,
ConstantVisitor
{
// Implementations for ClassVisitor.
public void visitProgramClass(ProgramClass programClass)
{
keepClassName(programClass);
// Make sure any outer class names are kept as well.
programClass.attributesAccept(this);
}
public void visitLibraryClass(LibraryClass libraryClass)
{
keepClassName(libraryClass);
}
// Implementations for MemberVisitor.
public void visitProgramField(ProgramClass programClass, ProgramField programField)
{
keepFieldName(programClass, programField);
}
public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
{
keepMethodName(programClass, programMethod);
}
public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField)
{
keepFieldName(libraryClass, libraryField);
}
public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod)
{
keepMethodName(libraryClass, libraryMethod);
}
// Implementations for AttributeVisitor.
public void visitAnyAttribute(Clazz clazz, Attribute attribute) {}
public void visitInnerClassesAttribute(Clazz clazz, InnerClassesAttribute innerClassesAttribute)
{
// Make sure the outer class names are kept as well.
innerClassesAttribute.innerClassEntriesAccept(clazz, this);
}
// Implementations for InnerClassesInfoVisitor.
public void visitInnerClassesInfo(Clazz clazz, InnerClassesInfo innerClassesInfo)
{
// Make sure the outer class name is kept as well.
int innerClassIndex = innerClassesInfo.u2innerClassIndex;
int outerClassIndex = innerClassesInfo.u2outerClassIndex;
if (innerClassIndex != 0 &&
outerClassIndex != 0 &&
clazz.getClassName(innerClassIndex).equals(clazz.getName()))
{
clazz.constantPoolEntryAccept(outerClassIndex, this);
}
}
// Implementations for ConstantVisitor.
public void visitClassConstant(Clazz clazz, ClassConstant classConstant)
{
// Make sure the outer class name is kept as well.
classConstant.referencedClassAccept(this);
}
// Small utility method.
/**
* Ensures the name of the given class name will be kept.
*/
public void keepClassName(Clazz clazz)
{
ClassObfuscator.setNewClassName(clazz,
clazz.getName());
}
/**
* Ensures the name of the given field name will be kept.
*/
private void keepFieldName(Clazz clazz, Field field)
{
MemberObfuscator.setFixedNewMemberName(field,
field.getName(clazz));
}
/**
* Ensures the name of the given method name will be kept.
*/
private void keepMethodName(Clazz clazz, Method method)
{
String name = method.getName(clazz);
if (!ClassUtil.isInitializer(name))
{
MemberObfuscator.setFixedNewMemberName(method, name);
}
}
}
|
