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 <memory.h>
18
19 #include "fuzzer/FuzzedDataProvider.h"
20 #include "utils/CallStack.h"
21
22 static constexpr int MAX_STRING_SIZE = 500;
23 static constexpr int MAX_IGNORE_DEPTH = 200;
24
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)25 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
26 FuzzedDataProvider dataProvider(data, size);
27 size_t ignoreDepth = dataProvider.ConsumeIntegralInRange<size_t>(0, MAX_IGNORE_DEPTH);
28 int logPriority = dataProvider.ConsumeIntegral<int>();
29 pid_t tid = dataProvider.ConsumeIntegral<pid_t>();
30 std::string logTag = dataProvider.ConsumeRandomLengthString(MAX_STRING_SIZE);
31 std::string prefix = dataProvider.ConsumeRandomLengthString(MAX_STRING_SIZE);
32
33 const char* logTagChars = logTag.c_str();
34 const char* prefixChars = prefix.c_str();
35
36 android::CallStack::CallStackUPtr callStack = android::CallStack::getCurrent(ignoreDepth);
37 android::CallStack* callstackPtr = callStack.get();
38 android::CallStack::logStack(logTagChars, callstackPtr,
39 static_cast<android_LogPriority>(logPriority));
40 android::CallStack::stackToString(prefixChars);
41
42 callstackPtr->log(logTagChars, static_cast<android_LogPriority>(logPriority), prefixChars);
43 callstackPtr->clear();
44 callstackPtr->getCurrent(ignoreDepth);
45 callstackPtr->log(logTagChars, static_cast<android_LogPriority>(logPriority), prefixChars);
46 callstackPtr->update(ignoreDepth, tid);
47 callstackPtr->log(logTagChars, static_cast<android_LogPriority>(logPriority), prefixChars);
48
49 return 0;
50 }
51