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authorGravatar gegy10002018-07-17 19:14:08 +0200
committerGravatar GitHub2018-07-17 19:14:08 +0200
commita88175ffc95792b88a8724f66db6dda2b8cc32ee (patch)
tree65895bbc6cf1766f4ca01e1257619ab1993e71dc /src/main/java/cuchaz/enigma/bytecode/MethodParametersAttribute.java
parentMerge pull request #3 from thiakil/src-jar (diff)
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ASM Based Class Translator (#1)
* Initial port to ASM * Package updates * Annotation + inner class translation * Fix inner class mapping * More bytecode translation * Signature refactoring * Fix highlighting of mapped names * Fix parameter name offset * Fix anonymous class generation * Fix issues with inner class signature transformation * Fix bridged method detection * Fix compile issues * Resolve all failed tests * Apply deobfuscated name to transformed classes * Fix class signatures not being translated * Fix frame array type translation * Fix frame array type translation * Fix array translation in method calls * Fix method reference and bridge detection * Fix handling of null deobf mappings * Parameter translation in interfaces * Fix enum parameter index offset * Fix parsed local variable indexing * Fix stackoverflow on rebuilding method names * Ignore invalid decompiled variable indices * basic source jar * Output directly to file on source export * Make decompile parallel * fix incorrect super calls * Use previous save state to delete old mapping files * Fix old mappings not properly being removed * Fix old mappings not properly being removed * make isMethodProvider public (cherry picked from commit ebad6a9) * speed up Deobfuscator's getSources by using a single TranslatingTypeloader and caching the ClassLoaderTypeloader * ignore .idea project folders * move SynchronizedTypeLoader to a non-inner * fix signature remap of inners for now * index & resolve method/field references for usages view * Allow reader/writer subclasses to provide the underlying file operations * fix giving obf classes a name not removing them from the panel * buffer the ParsedJar class entry inputstream, allow use with a jarinputstream * make CachingClasspathTypeLoader public * make CachingClasspathTypeLoader public * support enum switches with obfuscated SwitchMaps
Diffstat (limited to 'src/main/java/cuchaz/enigma/bytecode/MethodParametersAttribute.java')
-rw-r--r--src/main/java/cuchaz/enigma/bytecode/MethodParametersAttribute.java85
1 files changed, 0 insertions, 85 deletions
diff --git a/src/main/java/cuchaz/enigma/bytecode/MethodParametersAttribute.java b/src/main/java/cuchaz/enigma/bytecode/MethodParametersAttribute.java
deleted file mode 100644
index 57d60fd..0000000
--- a/src/main/java/cuchaz/enigma/bytecode/MethodParametersAttribute.java
+++ /dev/null
@@ -1,85 +0,0 @@
1/*******************************************************************************
2 * Copyright (c) 2015 Jeff Martin.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the GNU Lesser General Public
5 * License v3.0 which accompanies this distribution, and is available at
6 * http://www.gnu.org/licenses/lgpl.html
7 * <p>
8 * Contributors:
9 * Jeff Martin - initial API and implementation
10 ******************************************************************************/
11
12package cuchaz.enigma.bytecode;
13
14import javassist.bytecode.AttributeInfo;
15import javassist.bytecode.ConstPool;
16import javassist.bytecode.MethodInfo;
17
18import java.io.ByteArrayOutputStream;
19import java.io.DataOutputStream;
20import java.io.IOException;
21import java.util.ArrayList;
22import java.util.List;
23
24public class MethodParametersAttribute extends AttributeInfo {
25
26 private MethodParametersAttribute(ConstPool pool, List<Integer> parameterNameIndices) {
27 super(pool, "MethodParameters", writeStruct(parameterNameIndices));
28 }
29
30 public static void updateClass(MethodInfo info, List<String> names) {
31
32 // add the names to the class const pool
33 ConstPool constPool = info.getConstPool();
34 List<Integer> parameterNameIndices = new ArrayList<>();
35 for (String name : names) {
36 if (name != null) {
37 parameterNameIndices.add(constPool.addUtf8Info(name));
38 }
39 }
40
41 // add the attribute to the method
42 info.addAttribute(new MethodParametersAttribute(constPool, parameterNameIndices));
43 }
44
45 private static byte[] writeStruct(List<Integer> parameterNameIndices) {
46 // JVM 8 Spec says the struct looks like this:
47 // http://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.24
48 // uint8 num_params
49 // for each param:
50 // uint16 name_index -> points to UTF8 entry in constant pool, or 0 for no entry
51 // uint16 access_flags -> don't care, just set to 0
52
53 ByteArrayOutputStream buf = new ByteArrayOutputStream();
54 DataOutputStream out = new DataOutputStream(buf);
55
56 // NOTE: java hates unsigned integers, so we have to be careful here
57 // the writeShort(), writeByte() methods will read 16,8 low-order bits from the int argument
58 // as long as the int argument is in range of the unsigned short/byte type, it will be written as an unsigned short/byte
59 // if the int is out of range, the byte stream won't look the way we want and weird things will happen
60 final int SIZEOF_UINT8 = 1;
61 final int SIZEOF_UINT16 = 2;
62 final int MAX_UINT8 = (1 << 8) - 1;
63 final int MAX_UINT16 = (1 << 16) - 1;
64
65 try {
66 assert (parameterNameIndices.size() >= 0 && parameterNameIndices.size() <= MAX_UINT8);
67 out.writeByte(parameterNameIndices.size());
68
69 for (Integer index : parameterNameIndices) {
70 assert (index >= 0 && index <= MAX_UINT16);
71 out.writeShort(index);
72
73 // just write 0 for the access flags
74 out.writeShort(0);
75 }
76
77 out.close();
78 byte[] data = buf.toByteArray();
79 assert (data.length == SIZEOF_UINT8 + parameterNameIndices.size() * (SIZEOF_UINT16 + SIZEOF_UINT16));
80 return data;
81 } catch (IOException ex) {
82 throw new Error(ex);
83 }
84 }
85}