1 /*
2 * Copyright (C) 2019 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 #define FUZZ_LOG_TAG "binder_ndk"
17
18 #include "binder_ndk.h"
19
20 #include <android/binder_parcel_utils.h>
21 #include <android/binder_parcelable_utils.h>
22
23 #include "util.h"
24
25 // TODO(b/142061461): parent class
26 class SomeParcelable {
27 public:
writeToParcel(AParcel *)28 binder_status_t writeToParcel(AParcel* /*parcel*/) { return STATUS_OK; }
readFromParcel(const AParcel * parcel)29 binder_status_t readFromParcel(const AParcel* parcel) {
30 return AParcel_readInt32(parcel, &mValue);
31 }
32
33 private:
34 int32_t mValue = 0;
35 };
36
37 class ISomeInterface : public ::ndk::ICInterface {
38 public:
39 ISomeInterface() = default;
40 virtual ~ISomeInterface() = default;
41 static binder_status_t readFromParcel(const AParcel* parcel,
42 std::shared_ptr<ISomeInterface>* instance);
43 };
44
onTransact(AIBinder *,transaction_code_t,const AParcel *,AParcel *)45 static binder_status_t onTransact(AIBinder*, transaction_code_t, const AParcel*, AParcel*) {
46 return STATUS_UNKNOWN_TRANSACTION;
47 }
48
49 static AIBinder_Class* g_class = ::ndk::ICInterface::defineClass("ISomeInterface", onTransact);
50
51 class BpSomeInterface : public ::ndk::BpCInterface<ISomeInterface> {
52 public:
BpSomeInterface(const::ndk::SpAIBinder & binder)53 explicit BpSomeInterface(const ::ndk::SpAIBinder& binder) : BpCInterface(binder) {}
54 virtual ~BpSomeInterface() = default;
55 };
56
readFromParcel(const AParcel * parcel,std::shared_ptr<ISomeInterface> * instance)57 binder_status_t ISomeInterface::readFromParcel(const AParcel* parcel,
58 std::shared_ptr<ISomeInterface>* instance) {
59 ::ndk::SpAIBinder binder;
60 binder_status_t status = AParcel_readStrongBinder(parcel, binder.getR());
61 if (status == STATUS_OK) {
62 if (AIBinder_associateClass(binder.get(), g_class)) {
63 *instance = std::static_pointer_cast<ISomeInterface>(
64 ::ndk::ICInterface::asInterface(binder.get()));
65 } else {
66 *instance = ::ndk::SharedRefBase::make<BpSomeInterface>(binder);
67 }
68 }
69 return status;
70 }
71
72 #define PARCEL_READ(T, FUN) \
73 [](const NdkParcelAdapter& p, uint8_t /*data*/) { \
74 FUZZ_LOG() << "about to read " #T " using " #FUN " with status"; \
75 T t{}; \
76 binder_status_t status = FUN(p.aParcel(), &t); \
77 FUZZ_LOG() << #T " status: " << status /* << " value: " << t*/; \
78 }
79
80 // clang-format off
81 std::vector<ParcelRead<NdkParcelAdapter>> BINDER_NDK_PARCEL_READ_FUNCTIONS{
82 // methods from binder_parcel.h
__anon80e3ea3b0102() 83 [](const NdkParcelAdapter& p, uint8_t pos) {
84 FUZZ_LOG() << "about to set data position to " << pos;
85 binder_status_t status = AParcel_setDataPosition(p.aParcel(), pos);
86 FUZZ_LOG() << "set data position: " << status;
87 },
__anon80e3ea3b0202() 88 [](const NdkParcelAdapter& p, uint8_t /*data*/) {
89 FUZZ_LOG() << "about to read status header";
90 ndk::ScopedAStatus t;
91 binder_status_t status = AParcel_readStatusHeader(p.aParcel(), t.getR());
92 FUZZ_LOG() << "read status header: " << status;
93 },
__anon80e3ea3b0302() 94 [](const NdkParcelAdapter& p, uint8_t /*data*/) {
95 FUZZ_LOG() << "about to getDataSize the parcel";
96 AParcel_getDataSize(p.aParcel());
97 FUZZ_LOG() << "getDataSize done";
98 },
__anon80e3ea3b0402() 99 [](const NdkParcelAdapter& p, uint8_t data) {
100 FUZZ_LOG() << "about to read a ParcelableHolder";
101 ndk::AParcelableHolder ph {(data % 2 == 1) ? ndk::STABILITY_LOCAL : ndk::STABILITY_VINTF};
102 binder_status_t status = AParcel_readParcelable(p.aParcel(), &ph);
103 FUZZ_LOG() << "read the ParcelableHolder: " << status;
104 },
__anon80e3ea3b0502() 105 [](const NdkParcelAdapter& p, uint8_t data) {
106 FUZZ_LOG() << "about to appendFrom";
107 AParcel* parcel = AParcel_create();
108 binder_status_t status = AParcel_appendFrom(p.aParcel(), parcel, 0, data);
109 AParcel_delete(parcel);
110 FUZZ_LOG() << "appendFrom: " << status;
111 },
112
113 PARCEL_READ(int32_t, AParcel_readInt32),
114 PARCEL_READ(uint32_t, AParcel_readUint32),
115 PARCEL_READ(int64_t, AParcel_readInt64),
116 PARCEL_READ(uint64_t, AParcel_readUint64),
117 PARCEL_READ(float, AParcel_readFloat),
118 PARCEL_READ(double, AParcel_readDouble),
119 PARCEL_READ(bool, AParcel_readBool),
120 PARCEL_READ(char16_t, AParcel_readChar),
121 PARCEL_READ(int8_t, AParcel_readByte),
122
123 // methods from binder_parcel_utils.h
124 PARCEL_READ(ndk::SpAIBinder, ndk::AParcel_readNullableStrongBinder),
125 PARCEL_READ(ndk::SpAIBinder, ndk::AParcel_readRequiredStrongBinder),
126 PARCEL_READ(ndk::ScopedFileDescriptor, ndk::AParcel_readNullableParcelFileDescriptor),
127 PARCEL_READ(ndk::ScopedFileDescriptor, ndk::AParcel_readRequiredParcelFileDescriptor),
128 PARCEL_READ(std::string, ndk::AParcel_readString),
129 PARCEL_READ(std::optional<std::string>, ndk::AParcel_readString),
130
131 PARCEL_READ(std::vector<std::string>, ndk::AParcel_readVector),
132 PARCEL_READ(std::optional<std::vector<std::optional<std::string>>>, ndk::AParcel_readVector),
133 PARCEL_READ(std::vector<SomeParcelable>, ndk::AParcel_readVector),
134 PARCEL_READ(std::optional<std::vector<std::optional<SomeParcelable>>>, ndk::AParcel_readVector),
135 PARCEL_READ(std::vector<ndk::SpAIBinder>, ndk::AParcel_readVector),
136 PARCEL_READ(std::optional<std::vector<ndk::SpAIBinder>>, ndk::AParcel_readVector),
137 PARCEL_READ(std::vector<ndk::ScopedFileDescriptor>, ndk::AParcel_readVector),
138 PARCEL_READ(std::optional<std::vector<ndk::ScopedFileDescriptor>>, ndk::AParcel_readVector),
139 PARCEL_READ(std::vector<std::shared_ptr<ISomeInterface>>, ndk::AParcel_readVector),
140 PARCEL_READ(std::optional<std::vector<std::shared_ptr<ISomeInterface>>>, ndk::AParcel_readVector),
141 PARCEL_READ(std::vector<int32_t>, ndk::AParcel_readVector),
142 PARCEL_READ(std::optional<std::vector<int32_t>>, ndk::AParcel_readVector),
143 PARCEL_READ(std::vector<uint32_t>, ndk::AParcel_readVector),
144 PARCEL_READ(std::optional<std::vector<uint32_t>>, ndk::AParcel_readVector),
145 PARCEL_READ(std::vector<int64_t>, ndk::AParcel_readVector),
146 PARCEL_READ(std::optional<std::vector<int64_t>>, ndk::AParcel_readVector),
147 PARCEL_READ(std::vector<uint64_t>, ndk::AParcel_readVector),
148 PARCEL_READ(std::optional<std::vector<uint64_t>>, ndk::AParcel_readVector),
149 PARCEL_READ(std::vector<float>, ndk::AParcel_readVector),
150 PARCEL_READ(std::optional<std::vector<float>>, ndk::AParcel_readVector),
151 PARCEL_READ(std::vector<double>, ndk::AParcel_readVector),
152 PARCEL_READ(std::optional<std::vector<double>>, ndk::AParcel_readVector),
153 PARCEL_READ(std::vector<bool>, ndk::AParcel_readVector),
154 PARCEL_READ(std::optional<std::vector<bool>>, ndk::AParcel_readVector),
155 PARCEL_READ(std::vector<char16_t>, ndk::AParcel_readVector),
156 PARCEL_READ(std::optional<std::vector<char16_t>>, ndk::AParcel_readVector),
157 PARCEL_READ(std::vector<int32_t>, ndk::AParcel_resizeVector),
158 PARCEL_READ(std::optional<std::vector<int32_t>>, ndk::AParcel_resizeVector),
159
160 // methods for std::array<T,N>
161 #define COMMA ,
162 PARCEL_READ(std::array<bool COMMA 3>, ndk::AParcel_readData),
163 PARCEL_READ(std::array<uint8_t COMMA 3>, ndk::AParcel_readData),
164 PARCEL_READ(std::array<char16_t COMMA 3>, ndk::AParcel_readData),
165 PARCEL_READ(std::array<int32_t COMMA 3>, ndk::AParcel_readData),
166 PARCEL_READ(std::array<int64_t COMMA 3>, ndk::AParcel_readData),
167 PARCEL_READ(std::array<float COMMA 3>, ndk::AParcel_readData),
168 PARCEL_READ(std::array<double COMMA 3>, ndk::AParcel_readData),
169 PARCEL_READ(std::array<std::string COMMA 3>, ndk::AParcel_readData),
170 PARCEL_READ(std::array<SomeParcelable COMMA 3>, ndk::AParcel_readData),
171 PARCEL_READ(std::array<ndk::SpAIBinder COMMA 3>, ndk::AParcel_readData),
172 PARCEL_READ(std::array<ndk::ScopedFileDescriptor COMMA 3>, ndk::AParcel_readData),
173 PARCEL_READ(std::array<std::shared_ptr<ISomeInterface> COMMA 3>, ndk::AParcel_readData),
174 #undef COMMA
175 };
176 // clang-format on
177