blob: c50279b13d1fe32dc34f223d66fe5db90e2eb82a (
plain)
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
|
/*
* Copyright (C) 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 <BpBinderFuzzFunctions.h>
#include <IBinderFuzzFunctions.h>
#include <commonFuzzHelpers.h>
#include <fuzzer/FuzzedDataProvider.h>
#include <binder/BpBinder.h>
#include <binder/IServiceManager.h>
namespace android {
// Fuzzer entry point.
extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
FuzzedDataProvider fdp(data, size);
// TODO: In the future it would be more effective to fork a new process and then pass a BBinder
// to your process. Right now this is not implemented because it would involved fuzzing IPC on a
// forked process, and libfuzzer will not be able to handle code coverage. This would lead to
// crashes that are not easy to diagnose.
int32_t handle = fdp.ConsumeIntegralInRange<int32_t>(0, 1024);
sp<BpBinder> bpbinder = BpBinder::create(handle);
if (bpbinder == nullptr) return 0;
// To prevent memory from running out from calling too many add item operations.
const uint32_t MAX_RUNS = 2048;
uint32_t count = 0;
sp<IBinder::DeathRecipient> s_recipient = new FuzzDeathRecipient();
while (fdp.remaining_bytes() > 0 && count++ < MAX_RUNS) {
if (fdp.ConsumeBool()) {
callArbitraryFunction(&fdp, gBPBinderOperations, bpbinder, s_recipient);
} else {
callArbitraryFunction(&fdp, gIBinderOperations, bpbinder.get());
}
}
return 0;
}
} // namespace android
|
