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
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*
* Copyright (C) 2019 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.
*/
#define FUZZ_LOG_TAG "hwbinder"
#include "hwbinder.h"
#include "util.h"
#include <android-base/logging.h>
#include <hwbinder/Parcel.h>
#include "../../Utils.h"
using ::android::status_t;
using ::android::HexString;
// TODO: support scatter-gather types
std::ostream& operator<<(std::ostream& os, const ::android::sp<::android::hardware::IBinder>& binder) {
os << binder.get();
return os;
}
#define PARCEL_READ_OPT_STATUS(T, FUN) \
PARCEL_READ_NO_STATUS(T, FUN), PARCEL_READ_WITH_STATUS(T, FUN)
#define PARCEL_READ_NO_STATUS(T, FUN) \
[](const ::android::hardware::Parcel& p, FuzzedDataProvider& /*provider*/) { \
FUZZ_LOG() << "about to read " #T " using " #FUN " with no status"; \
T t = p.FUN(); \
FUZZ_LOG() << #T " value: " << t; \
}
#define PARCEL_READ_WITH_STATUS(T, FUN) \
[](const ::android::hardware::Parcel& p, FuzzedDataProvider& /*provider*/) { \
FUZZ_LOG() << "about to read " #T " using " #FUN " with status"; \
T t; \
status_t status = p.FUN(&t); \
FUZZ_LOG() << #T " status: " << status << " value: " << t; \
}
// clang-format off
std::vector<ParcelRead<::android::hardware::Parcel>> HWBINDER_PARCEL_READ_FUNCTIONS {
PARCEL_READ_NO_STATUS(size_t, dataSize),
PARCEL_READ_NO_STATUS(size_t, dataAvail),
PARCEL_READ_NO_STATUS(size_t, dataPosition),
PARCEL_READ_NO_STATUS(size_t, dataCapacity),
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& provider) {
// aborts on larger values
size_t pos = provider.ConsumeIntegralInRange<size_t>(0, INT32_MAX);
FUZZ_LOG() << "about to setDataPosition: " << pos;
p.setDataPosition(pos);
FUZZ_LOG() << "setDataPosition done";
},
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& provider) {
FUZZ_LOG() << "about to enforceInterface";
bool okay = p.enforceInterface(provider.ConsumeRandomLengthString().c_str());
FUZZ_LOG() << "enforceInterface status: " << okay;
},
PARCEL_READ_NO_STATUS(size_t, objectsCount),
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& provider) {
// Read at least a bit. Unbounded allocation would OOM.
size_t length = provider.ConsumeIntegralInRange<size_t>(0, 1024);
FUZZ_LOG() << "about to read";
std::vector<uint8_t> data (length);
status_t status = p.read(data.data(), length);
FUZZ_LOG() << "read status: " << status << " data: " << HexString(data.data(), data.size());
},
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& provider) {
size_t length = provider.ConsumeIntegral<size_t>();
FUZZ_LOG() << "about to read";
const void* inplace = p.readInplace(length);
FUZZ_LOG() << "read status: " << (inplace ? HexString(inplace, length) : "null");
},
PARCEL_READ_WITH_STATUS(int8_t, readInt8),
PARCEL_READ_WITH_STATUS(uint8_t, readUint8),
PARCEL_READ_WITH_STATUS(int16_t, readInt16),
PARCEL_READ_WITH_STATUS(uint16_t, readUint16),
PARCEL_READ_OPT_STATUS(int32_t, readInt32),
PARCEL_READ_OPT_STATUS(uint32_t, readUint32),
PARCEL_READ_OPT_STATUS(int64_t, readInt64),
PARCEL_READ_OPT_STATUS(uint64_t, readUint64),
PARCEL_READ_OPT_STATUS(float, readFloat),
PARCEL_READ_OPT_STATUS(double, readDouble),
PARCEL_READ_OPT_STATUS(bool, readBool),
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to readCString";
const char* str = p.readCString();
FUZZ_LOG() << "readCString " << (str ? str : "<null>");
},
PARCEL_READ_OPT_STATUS(::android::String16, readString16),
PARCEL_READ_WITH_STATUS(std::unique_ptr<::android::String16>, readString16),
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to readString16Inplace";
size_t outSize = 0;
const char16_t* str = p.readString16Inplace(&outSize);
FUZZ_LOG() << "readString16Inplace: " << HexString(str, sizeof(char16_t) * outSize);
},
PARCEL_READ_OPT_STATUS(::android::sp<::android::hardware::IBinder>, readStrongBinder),
PARCEL_READ_WITH_STATUS(::android::sp<::android::hardware::IBinder>, readNullableStrongBinder),
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& provider) {
size_t size = provider.ConsumeIntegral<size_t>();
FUZZ_LOG() << "about to readBuffer";
size_t handle = 0;
const void* data = nullptr;
status_t status = p.readBuffer(size, &handle, &data);
FUZZ_LOG() << "readBuffer status: " << status << " handle: " << handle << " data: " << data;
// should be null since we don't create any IPC objects
CHECK(data == nullptr) << data;
},
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& provider) {
size_t size = provider.ConsumeIntegral<size_t>();
FUZZ_LOG() << "about to readNullableBuffer";
size_t handle = 0;
const void* data = nullptr;
status_t status = p.readNullableBuffer(size, &handle, &data);
FUZZ_LOG() << "readNullableBuffer status: " << status << " handle: " << handle << " data: " << data;
// should be null since we don't create any IPC objects
CHECK(data == nullptr) << data;
},
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& provider) {
size_t size = provider.ConsumeIntegral<size_t>();
FUZZ_LOG() << "about to readEmbeddedBuffer";
size_t handle = 0;
size_t parent_buffer_handle = 0;
size_t parent_offset = 3;
const void* data = nullptr;
status_t status = p.readEmbeddedBuffer(size, &handle, parent_buffer_handle, parent_offset, &data);
FUZZ_LOG() << "readEmbeddedBuffer status: " << status << " handle: " << handle << " data: " << data;
// should be null since we don't create any IPC objects
CHECK(data == nullptr) << data;
},
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& provider) {
size_t size = provider.ConsumeIntegral<size_t>();
FUZZ_LOG() << "about to readNullableEmbeddedBuffer";
size_t handle = 0;
size_t parent_buffer_handle = 0;
size_t parent_offset = 3;
const void* data = nullptr;
status_t status = p.readNullableEmbeddedBuffer(size, &handle, parent_buffer_handle, parent_offset, &data);
FUZZ_LOG() << "readNullableEmbeddedBuffer status: " << status << " handle: " << handle << " data: " << data;
// should be null since we don't create any IPC objects
CHECK(data == nullptr) << data;
},
[] (const ::android::hardware::Parcel& p, FuzzedDataProvider& /*provider*/) {
FUZZ_LOG() << "about to readNativeHandleNoDup";
const native_handle_t* handle = nullptr;
status_t status = p.readNativeHandleNoDup(&handle);
FUZZ_LOG() << "readNativeHandleNoDup status: " << status << " handle: " << handle;
// should be null since we don't create any IPC objects
CHECK(handle == nullptr) << handle;
CHECK(status != ::android::OK);
},
};
// clang-format on
|
