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
|
/*
* 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 <sys/select.h>
#include <iostream>
#include <utils/Looper.h>
#include "Looper_test_pipe.h"
#include "fuzzer/FuzzedDataProvider.h"
using android::Looper;
using android::sp;
// We don't want this to bog down fuzzing
static constexpr int MAX_POLL_DELAY = 50;
static constexpr int MAX_OPERATIONS = 500;
void doNothing() {}
void* doNothingPointer = reinterpret_cast<void*>(doNothing);
static int noopCallback(int, int, void*) {
return 0;
}
std::vector<std::function<void(FuzzedDataProvider*, sp<Looper>, Pipe)>> operations = {
[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe) -> void {
looper->pollOnce(dataProvider->ConsumeIntegralInRange<int>(0, MAX_POLL_DELAY));
},
[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe) -> void {
looper->pollAll(dataProvider->ConsumeIntegralInRange<int>(0, MAX_POLL_DELAY));
},
// events and callback are nullptr
[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe pipeObj) -> void {
looper->addFd(pipeObj.receiveFd, dataProvider->ConsumeIntegral<int>(),
dataProvider->ConsumeIntegral<int>(), nullptr, nullptr);
},
// Events is nullptr
[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe pipeObj) -> void {
looper->addFd(pipeObj.receiveFd, dataProvider->ConsumeIntegral<int>(),
dataProvider->ConsumeIntegral<int>(), noopCallback, nullptr);
},
// callback is nullptr
[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe pipeObj) -> void {
looper->addFd(pipeObj.receiveFd, dataProvider->ConsumeIntegral<int>(),
dataProvider->ConsumeIntegral<int>(), nullptr, doNothingPointer);
},
// callback and events both set
[](FuzzedDataProvider* dataProvider, sp<Looper> looper, Pipe pipeObj) -> void {
looper->addFd(pipeObj.receiveFd, dataProvider->ConsumeIntegral<int>(),
dataProvider->ConsumeIntegral<int>(), noopCallback, doNothingPointer);
},
[](FuzzedDataProvider*, sp<Looper> looper, Pipe) -> void { looper->wake(); },
[](FuzzedDataProvider*, sp<Looper>, Pipe pipeObj) -> void { pipeObj.writeSignal(); }};
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
Pipe pipeObj;
FuzzedDataProvider dataProvider(data, size);
sp<Looper> looper = new Looper(dataProvider.ConsumeBool());
size_t opsRun = 0;
while (dataProvider.remaining_bytes() > 0 && opsRun++ < MAX_OPERATIONS) {
uint8_t op = dataProvider.ConsumeIntegralInRange<uint8_t>(0, operations.size() - 1);
operations[op](&dataProvider, looper, pipeObj);
}
// Clear our pointer
looper.clear();
return 0;
}
|
