1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "thread_fuzzer.h"
17#include "fuzz_log.h"
18#include <iostream>
19#include <cstdio>
20#include <ctime>
21#include <unistd.h>
22#include <sys/prctl.h>
23#include <sys/resource.h>
24#include "fuzzer/FuzzedDataProvider.h"
25#include "thread_ex.h"
26
27using namespace std;
28
29namespace OHOS {
30const std::string& DEFAULT_THREAD_NAME = "default";
31const int MAX_STACK_SIZE = 1024;
32const int MAX_PRIORITY = 10;
33using ThreadRunFunc = bool (*)(int& data);
34
35bool TestRun(int &data)
36{
37    sleep(1);
38    ++data;
39    return false;
40}
41
42class TestThread : public OHOS::Thread {
43public:
44    TestThread(const int data, const bool readyToWork, int priority, ThreadRunFunc runFunc)
45        : data_(data), priority_(priority), name_(DEFAULT_THREAD_NAME), readyToWork_(readyToWork), runFunc_(runFunc)
46        {};
47
48    TestThread() = delete;
49    ~TestThread() {}
50
51    bool ReadyToWork() override;
52
53    int data_;
54    int priority_;
55    std::string name_;
56protected:
57    bool Run() override;
58
59private:
60    bool readyToWork_;
61    ThreadRunFunc runFunc_;
62};
63
64bool TestThread::ReadyToWork()
65{
66    return readyToWork_;
67}
68
69bool TestThread::Run()
70{
71    priority_ = getpriority(PRIO_PROCESS, 0);
72    char threadName[MAX_THREAD_NAME_LEN + 1] = {0};
73    prctl(PR_GET_NAME, threadName, 0, 0);
74    name_ = threadName;
75
76    if (runFunc_ != nullptr) {
77        return (*runFunc_)(data_);
78    }
79
80    return false;
81}
82
83void ThreadTestFunc(FuzzedDataProvider* dataProvider)
84{
85    bool readyToWork = dataProvider->ConsumeBool();
86    bool priority = dataProvider->ConsumeIntegralInRange(0, MAX_PRIORITY);
87    auto t = std::make_unique<TestThread>(0, readyToWork, priority, TestRun);
88
89    int stacksize = dataProvider->ConsumeIntegralInRange(0, MAX_STACK_SIZE);
90    string name = dataProvider->ConsumeRandomLengthString(MAX_THREAD_NAME_LEN);
91    bool newPriority = dataProvider->ConsumeIntegralInRange(0, MAX_PRIORITY);
92    auto result = t->Start(name, newPriority, stacksize);
93    if (result != ThreadStatus::OK) {
94        return;
95    }
96    t->ReadyToWork();
97    t->IsExitPending();
98    t->IsRunning();
99    t->NotifyExitSync();
100}
101
102} // namespace OHOS
103
104/* Fuzzer entry point */
105extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
106{
107    FuzzedDataProvider dataProvider(data, size);
108    OHOS::ThreadTestFunc(&dataProvider);
109    return 0;
110}
111