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
|
/*
* Copyright 2023 Code Intelligence GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.code_intelligence.jazzer.mutation.mutator.lang;
import static com.code_intelligence.jazzer.mutation.support.InputStreamSupport.readAllBytes;
import static com.code_intelligence.jazzer.mutation.support.TypeSupport.findFirstParentIfClass;
import com.code_intelligence.jazzer.mutation.api.Debuggable;
import com.code_intelligence.jazzer.mutation.api.MutatorFactory;
import com.code_intelligence.jazzer.mutation.api.PseudoRandom;
import com.code_intelligence.jazzer.mutation.api.SerializingMutator;
import com.code_intelligence.jazzer.mutation.mutator.libfuzzer.LibFuzzerMutator;
import com.google.errorprone.annotations.Immutable;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.AnnotatedType;
import java.util.Arrays;
import java.util.Optional;
import java.util.function.Predicate;
final class ByteArrayMutatorFactory extends MutatorFactory {
@Override
public Optional<SerializingMutator<?>> tryCreate(AnnotatedType type, MutatorFactory factory) {
return findFirstParentIfClass(type, byte[].class).map(parent -> ByteArrayMutator.INSTANCE);
}
@Immutable
private static final class ByteArrayMutator extends SerializingMutator<byte[]> {
private static final ByteArrayMutator INSTANCE = new ByteArrayMutator();
private ByteArrayMutator() {}
@Override
public byte[] read(DataInputStream in) throws IOException {
byte[] bytes = new byte[in.readInt()];
in.readFully(bytes);
return bytes;
}
@Override
public byte[] readExclusive(InputStream in) throws IOException {
return readAllBytes(in);
}
@Override
public void write(byte[] value, DataOutputStream out) throws IOException {
out.writeInt(value.length);
out.write(value);
}
@Override
public void writeExclusive(byte[] value, OutputStream out) throws IOException {
out.write(value);
}
@Override
public byte[] detach(byte[] value) {
return Arrays.copyOf(value, value.length);
}
@Override
public byte[] init(PseudoRandom prng) {
// TODO: Improve the way the upper bound is determined, e.g. grow it over time and/or add
// support for the WithSize annotation.
byte[] bytes = new byte[prng.indexIn(1000)];
prng.bytes(bytes);
return bytes;
}
@Override
public byte[] mutate(byte[] value, PseudoRandom prng) {
// TODO: The way maxSizeIncrease is determined is just a heuristic and hasn't been
// benchmarked.
return LibFuzzerMutator.mutateDefault(value, Math.max(8, value.length / 16));
}
@Override
public String toDebugString(Predicate<Debuggable> isInCycle) {
return "byte[]";
}
}
}
|
