1 /*
2 * Copyright 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <fuzzer/FuzzedDataProvider.h>
18 #include <sys/time.h>
19 #include <iostream>
20 #include "Common.h"
21 #include "Enumerator.h"
22 #include "HalDisplay.h"
23 #include "MockHWDisplay.h"
24
25 using DisplayDesc = ::android::hardware::automotive::evs::V1_0::DisplayDesc;
26
27 namespace android {
28 namespace automotive {
29 namespace evs {
30 namespace V1_1 {
31 namespace implementation {
32
33 namespace {
34
35 enum EvsFuzzFuncs {
36 EVS_FUZZ_GET_HW_DISPLAY = 0, // verify getHwDisplay
37 EVS_FUZZ_GET_DISPLAY_INFO, // verify getDisplayInfo
38 EVS_FUZZ_SET_DISPLAY_STATE, // verify setDisplayState
39 EVS_FUZZ_GET_DISPLAY_STATE, // verify getDisplayState
40 EVS_FUZZ_GET_TARGET_BUFFER, // verify getTargetBuffer
41 EVS_FUZZ_RTN_TGT_BUF_FOR_DISPLAY, // verify returnTargetBufferForDisplay
42 EVS_FUZZ_GET_DISPLAY_INFO_1_1, // verify getDisplayInfo_1_1
43 EVS_FUZZ_TO_STRING, // verify toString
44 EVS_FUZZ_API_SUM
45 };
46
47 const int kMaxFuzzerConsumedBytes = 12;
48
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)49 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
50 FuzzedDataProvider fdp(data, size);
51 sp<IEvsDisplay_1_0> mockHWDisplay = new MockHWDisplay();
52 sp<HalDisplay> halDisplay = new HalDisplay(mockHWDisplay);
53
54 while (fdp.remaining_bytes() > kMaxFuzzerConsumedBytes) {
55 switch (fdp.ConsumeIntegralInRange<uint32_t>(0, EVS_FUZZ_API_SUM)) {
56 case EVS_FUZZ_GET_HW_DISPLAY: {
57 LOG(DEBUG) << "EVS_FUZZ_GET_HW_DISPLAY";
58 halDisplay->getHwDisplay();
59 break;
60 }
61 case EVS_FUZZ_GET_DISPLAY_INFO: {
62 LOG(DEBUG) << "EVS_FUZZ_GET_DISPLAY_INFO";
63 halDisplay->getDisplayInfo([](DisplayDesc desc) {});
64 break;
65 }
66 case EVS_FUZZ_SET_DISPLAY_STATE: {
67 LOG(DEBUG) << "EVS_FUZZ_SET_DISPLAY_STATE";
68 uint32_t state =
69 fdp.ConsumeIntegralInRange<uint32_t>(0,
70 static_cast<uint32_t>(
71 EvsDisplayState::NUM_STATES) -
72 1);
73 halDisplay->setDisplayState(static_cast<EvsDisplayState>(state));
74 break;
75 }
76 case EVS_FUZZ_GET_DISPLAY_STATE: {
77 LOG(DEBUG) << "EVS_FUZZ_GET_DISPLAY_STATE";
78 halDisplay->getDisplayState();
79 break;
80 }
81 case EVS_FUZZ_GET_TARGET_BUFFER: {
82 LOG(DEBUG) << "EVS_FUZZ_GET_TARGET_BUFFER";
83 halDisplay->getTargetBuffer([](const BufferDesc_1_0& buff) {});
84 break;
85 }
86 case EVS_FUZZ_RTN_TGT_BUF_FOR_DISPLAY: {
87 LOG(DEBUG) << "EVS_FUZZ_RTN_TGT_BUF_FOR_DISPLAY";
88 BufferDesc_1_0 buffer;
89 buffer.bufferId = fdp.ConsumeIntegral<int32_t>();
90 halDisplay->returnTargetBufferForDisplay(buffer);
91 break;
92 }
93 case EVS_FUZZ_GET_DISPLAY_INFO_1_1: {
94 LOG(DEBUG) << "EVS_FUZZ_GET_DISPLAY_INFO_1_1";
95 halDisplay->getDisplayInfo_1_1([](const auto& config, const auto& state) {});
96 break;
97 }
98 case EVS_FUZZ_TO_STRING: {
99 LOG(DEBUG) << "EVS_FUZZ_TO_STRING";
100 std::string indent = fdp.ConsumeRandomLengthString(kMaxFuzzerConsumedBytes);
101 halDisplay->toString(indent.c_str());
102 break;
103 }
104 default:
105 LOG(ERROR) << "Unexpected option, aborting...";
106 break;
107 }
108 }
109 return 0;
110 }
111
112 } // namespace
113 } // namespace implementation
114 } // namespace V1_1
115 } // namespace evs
116 } // namespace automotive
117 } // namespace android
118