1/*
2 * Copyright (c) 2024 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 "getjspandafile_fuzzer.h"
17#include "ecmascript/ohos/ohos_pkg_args.h"
18
19using namespace panda;
20using namespace panda::ecmascript;
21using namespace panda::ecmascript::kungfu;
22
23namespace OHOS {
24
25    void GetJSPandaFileFuzzTest([[maybe_unused]]const uint8_t *data, size_t size)
26    {
27        constexpr size_t UINT32_SIZE = sizeof(uint32_t);
28
29        // requires at least 12 bytes to properly extract and interpret three 32-bit unsigned integers (uint32_t)
30        constexpr size_t MIN_SIZE_REQUIRED = UINT32_SIZE * 3;
31        if (size < MIN_SIZE_REQUIRED) {
32            return;
33        }
34
35        RuntimeOption option;
36        JSRuntimeOptions runtimeOptions;
37
38        uint32_t pathLen = 0;
39        size_t maxByteLen = 4;
40        if (size > maxByteLen) {
41            size = maxByteLen;
42        }
43        if (memcpy_s(&pathLen, maxByteLen, data, size) != EOK) {
44            std::cout << "memcpy_s failed!";
45            UNREACHABLE();
46        }
47        data += UINT32_SIZE;
48        size -= UINT32_SIZE;
49        std::string hapPath(data, data + size);
50        data += pathLen;
51        size -= pathLen;
52
53        uint32_t offset = pathLen + MIN_SIZE_REQUIRED;
54        data += UINT32_SIZE;
55        size -= UINT32_SIZE;
56
57        uint32_t fileSize = offset + MIN_SIZE_REQUIRED;
58        data += UINT32_SIZE;
59        size -= UINT32_SIZE;
60
61        // set runtimeOptions
62        runtimeOptions.SetHapPath(hapPath);
63        runtimeOptions.SetHapAbcOffset(offset);
64        runtimeOptions.SetHapAbcSize(fileSize);
65
66        std::shared_ptr<JSPandaFile> pf;
67        OhosPkgArgs pkgArgs;
68
69        pkgArgs.GetJSPandaFile(runtimeOptions, pf);
70    }
71}
72
73// Fuzzer entry point.
74extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
75{
76    // Run your code on data.
77    OHOS::GetJSPandaFileFuzzTest(data, size);
78    return 0;
79}