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
|
/*
* Copyright 2021 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 <fuzzer/FuzzedDataProvider.h>
#include "dispatcher/LatencyTracker.h"
namespace android {
namespace inputdispatcher {
/**
* A processor of InputEventTimelines that does nothing with the provided data.
*/
class EmptyProcessor : public InputEventTimelineProcessor {
public:
/**
* Just ignore the provided timeline
*/
void processTimeline(const InputEventTimeline& timeline) override {
for (const auto& [token, connectionTimeline] : timeline.connectionTimelines) {
connectionTimeline.isComplete();
}
};
};
static sp<IBinder> getConnectionToken(FuzzedDataProvider& fdp,
std::array<sp<IBinder>, 10>& tokens) {
const bool useExistingToken = fdp.ConsumeBool();
if (useExistingToken) {
return tokens[fdp.ConsumeIntegralInRange<size_t>(0ul, tokens.size() - 1)];
}
return new BBinder();
}
extern "C" int LLVMFuzzerTestOneInput(uint8_t* data, size_t size) {
FuzzedDataProvider fdp(data, size);
EmptyProcessor emptyProcessor;
LatencyTracker tracker(&emptyProcessor);
// Make some pre-defined tokens to ensure that some timelines are complete.
std::array<sp<IBinder> /*token*/, 10> predefinedTokens;
for (size_t i = 0; i < predefinedTokens.size(); i++) {
predefinedTokens[i] = new BBinder();
}
// Randomly invoke LatencyTracker api's until randomness is exhausted.
while (fdp.remaining_bytes() > 0) {
fdp.PickValueInArray<std::function<void()>>({
[&]() -> void {
int32_t inputEventId = fdp.ConsumeIntegral<int32_t>();
int32_t isDown = fdp.ConsumeBool();
nsecs_t eventTime = fdp.ConsumeIntegral<nsecs_t>();
nsecs_t readTime = fdp.ConsumeIntegral<nsecs_t>();
tracker.trackListener(inputEventId, isDown, eventTime, readTime);
},
[&]() -> void {
int32_t inputEventId = fdp.ConsumeIntegral<int32_t>();
sp<IBinder> connectionToken = getConnectionToken(fdp, predefinedTokens);
nsecs_t deliveryTime = fdp.ConsumeIntegral<nsecs_t>();
nsecs_t consumeTime = fdp.ConsumeIntegral<nsecs_t>();
nsecs_t finishTime = fdp.ConsumeIntegral<nsecs_t>();
tracker.trackFinishedEvent(inputEventId, connectionToken, deliveryTime,
consumeTime, finishTime);
},
[&]() -> void {
int32_t inputEventId = fdp.ConsumeIntegral<int32_t>();
sp<IBinder> connectionToken = getConnectionToken(fdp, predefinedTokens);
std::array<nsecs_t, GraphicsTimeline::SIZE> graphicsTimeline;
for (size_t i = 0; i < graphicsTimeline.size(); i++) {
graphicsTimeline[i] = fdp.ConsumeIntegral<nsecs_t>();
}
tracker.trackGraphicsLatency(inputEventId, connectionToken, graphicsTimeline);
},
})();
}
return 0;
}
} // namespace inputdispatcher
} // namespace android
|
