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
|
/*
* Copyright 2020 The Android Open Source Project
*
* 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.
*/
#include "android-base/file.h"
#include "fuzzer/FuzzedDataProvider.h"
#include "input/PropertyMap.h"
#include "utils/String8.h"
static constexpr int MAX_FILE_SIZE = 256;
static constexpr int MAX_STR_LEN = 2048;
static constexpr int MAX_OPERATIONS = 1000;
static const std::vector<std::function<void(FuzzedDataProvider*, android::PropertyMap)>>
operations = {
[](FuzzedDataProvider*, android::PropertyMap propertyMap) -> void {
propertyMap.getProperties();
},
[](FuzzedDataProvider*, android::PropertyMap propertyMap) -> void {
propertyMap.clear();
},
[](FuzzedDataProvider* dataProvider, android::PropertyMap propertyMap) -> void {
std::string keyStr = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
android::String8 key = android::String8(keyStr.c_str());
propertyMap.hasProperty(key);
},
[](FuzzedDataProvider* dataProvider, android::PropertyMap propertyMap) -> void {
std::string keyStr = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
android::String8 key = android::String8(keyStr.c_str());
android::String8 out;
propertyMap.tryGetProperty(key, out);
},
[](FuzzedDataProvider* dataProvider, android::PropertyMap /*unused*/) -> void {
TemporaryFile tf;
// Generate file contents
std::string contents = dataProvider->ConsumeRandomLengthString(MAX_FILE_SIZE);
// If we have string contents, dump them into the file.
// Otherwise, just leave it as an empty file.
if (contents.length() > 0) {
const char* bytes = contents.c_str();
android::base::WriteStringToFd(bytes, tf.fd);
}
android::PropertyMap::load(tf.path);
},
[](FuzzedDataProvider* dataProvider, android::PropertyMap propertyMap) -> void {
std::string keyStr = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
std::string valStr = dataProvider->ConsumeRandomLengthString(MAX_STR_LEN);
android::String8 key = android::String8(keyStr.c_str());
android::String8 val = android::String8(valStr.c_str());
propertyMap.addProperty(key, val);
},
};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider dataProvider(data, size);
android::PropertyMap propertyMap = android::PropertyMap();
int opsRun = 0;
while (dataProvider.remaining_bytes() > 0 && opsRun++ < MAX_OPERATIONS) {
uint8_t op = dataProvider.ConsumeIntegralInRange<uint8_t>(0, operations.size() - 1);
operations[op](&dataProvider, propertyMap);
}
return 0;
}
|
