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 "deeplinkreserveconfig_fuzzer.h"
17
18#include <cstddef>
19#include <cstdint>
20#include <iostream>
21
22#include "securec.h"
23
24#define private public
25#include "deeplink_reserve_config.h"
26#undef private
27
28using json = nlohmann::json;
29using namespace OHOS::AAFwk;
30namespace OHOS {
31namespace {
32constexpr int INPUT_ZERO = 0;
33constexpr int INPUT_ONE = 1;
34constexpr int INPUT_TWO = 2;
35constexpr int INPUT_THREE = 3;
36constexpr size_t FOO_MAX_LEN = 1024;
37constexpr size_t U32_AT_SIZE = 4;
38constexpr size_t OFFSET_ZERO = 24;
39constexpr size_t OFFSET_ONE = 16;
40constexpr size_t OFFSET_TWO = 8;
41const std::string CONFIG_PATH = "/etc/ability_runtime/deeplink_reserve_config.json";
42const std::string DEFAULT_RESERVE_CONFIG_PATH = "/system/etc/deeplink_reserve_config.json";
43const std::string DEEPLINK_RESERVED_URI_NAME = "deepLinkReservedUri";
44const std::string BUNDLE_NAME = "bundleName";
45const std::string URIS_NAME = "uris";
46const std::string SCHEME_NAME = "scheme";
47const std::string HOST_NAME = "host";
48const std::string PORT_NAME = "port";
49const std::string PATH_NAME = "path";
50const std::string PATH_START_WITH_NAME = "pathStartWith";
51const std::string PATH_REGEX_NAME = "pathRegex";
52const std::string TYPE_NAME = "type";
53const std::string UTD_NAME = "utd";
54const std::string PORT_SEPARATOR = ":";
55const std::string SCHEME_SEPARATOR = "://";
56const std::string PATH_SEPARATOR = "/";
57const std::string PARAM_SEPARATOR = "?";
58}
59uint32_t GetU32Data(const char* ptr)
60{
61    // convert fuzz input data to an integer
62    return (ptr[INPUT_ZERO] << OFFSET_ZERO) | (ptr[INPUT_ONE] << OFFSET_ONE) | (ptr[INPUT_TWO] << OFFSET_TWO) |
63        ptr[INPUT_THREE];
64}
65bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
66{
67    auto &deepLinkReserveConfig = DeepLinkReserveConfig::GetInstance();
68    deepLinkReserveConfig.GetConfigPath();
69    deepLinkReserveConfig.LoadConfiguration();
70    std::string linkString(data, size);
71    std::string bundleName(data, size);
72    deepLinkReserveConfig.isLinkReserved(linkString, bundleName);
73    ReserveUri reservedUri;
74    std::string link(data, size);
75    std::string strParam(data, size);
76    deepLinkReserveConfig.isUriMatched(reservedUri, link);
77    reservedUri.scheme = strParam;
78    deepLinkReserveConfig.isUriMatched(reservedUri, link);
79    reservedUri.host = strParam;
80    deepLinkReserveConfig.isUriMatched(reservedUri, link);
81    reservedUri.port = strParam;
82    deepLinkReserveConfig.isUriMatched(reservedUri, link);
83    reservedUri.path = strParam;
84    deepLinkReserveConfig.isUriMatched(reservedUri, link);
85    reservedUri.pathStartWith = strParam;
86    deepLinkReserveConfig.isUriMatched(reservedUri, link);
87    reservedUri.pathRegex = strParam;
88    deepLinkReserveConfig.isUriMatched(reservedUri, link);
89    std::vector<ReserveUri> uriList;
90    json jsonUriObject;
91    jsonUriObject["SCHEME_NAME"] = SCHEME_NAME;
92    deepLinkReserveConfig.LoadReservedUrilItem(jsonUriObject, uriList);
93    jsonUriObject["HOST_NAME"] = HOST_NAME;
94    deepLinkReserveConfig.LoadReservedUrilItem(jsonUriObject, uriList);
95    jsonUriObject["PORT_NAME"] = PORT_NAME;
96    deepLinkReserveConfig.LoadReservedUrilItem(jsonUriObject, uriList);
97    jsonUriObject["PATH_NAME"] = PATH_NAME;
98    deepLinkReserveConfig.LoadReservedUrilItem(jsonUriObject, uriList);
99    jsonUriObject["PATH_START_WITH_NAME"] = PATH_START_WITH_NAME;
100    deepLinkReserveConfig.LoadReservedUrilItem(jsonUriObject, uriList);
101    jsonUriObject["PATH_REGEX_NAME"] = PATH_REGEX_NAME;
102    deepLinkReserveConfig.LoadReservedUrilItem(jsonUriObject, uriList);
103    jsonUriObject["TYPE_NAME"] = TYPE_NAME;
104    deepLinkReserveConfig.LoadReservedUrilItem(jsonUriObject, uriList);
105    jsonUriObject["UTD_NAME"] = UTD_NAME;
106    deepLinkReserveConfig.LoadReservedUrilItem(jsonUriObject, uriList);
107    return true;
108}
109
110bool DoSomethingInterestingWithMyAPIOne(const char* data, size_t size)
111{
112    auto &deepLinkReserveConfig1 = DeepLinkReserveConfig::GetInstance();
113    std::string filePath(data, size);
114    json jsonBuf;
115    deepLinkReserveConfig1.ReadFileInfoJson(filePath, jsonBuf);
116    json object;
117    deepLinkReserveConfig1.LoadReservedUriList(object);
118    object["DEEPLINK_RESERVED_URI_NAME"] = DEEPLINK_RESERVED_URI_NAME;
119    deepLinkReserveConfig1.LoadReservedUriList(object);
120    int32_t userId = static_cast<int32_t>(GetU32Data(data));
121    object["BUNDLE_NAME"] = userId;
122    deepLinkReserveConfig1.LoadReservedUriList(object);
123    object["BUNDLE_NAME"] = BUNDLE_NAME;
124    deepLinkReserveConfig1.LoadReservedUriList(object);
125    json uriArray = { "uri1", "uri2", "uri3" };
126    object["URIS_NAME"] = uriArray;
127    deepLinkReserveConfig1.LoadReservedUriList(object);
128    object["URIS_NAME"] = URIS_NAME;
129    deepLinkReserveConfig1.LoadReservedUriList(object);
130    return true;
131}
132}
133
134/* Fuzzer entry point */
135extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
136{
137    /* Run your code on data */
138    if (data == nullptr) {
139        std::cout << "invalid data" << std::endl;
140        return 0;
141    }
142
143    /* Validate the length of size */
144    if (size > OHOS::FOO_MAX_LEN || size < OHOS::U32_AT_SIZE) {
145        return 0;
146    }
147
148    char* ch = (char*)malloc(size + 1);
149    if (ch == nullptr) {
150        std::cout << "malloc failed." << std::endl;
151        return 0;
152    }
153
154    (void)memset_s(ch, size + 1, 0x00, size + 1);
155    if (memcpy_s(ch, size + 1, data, size) != EOK) {
156        std::cout << "copy failed." << std::endl;
157        free(ch);
158        ch = nullptr;
159        return 0;
160    }
161
162    OHOS::DoSomethingInterestingWithMyAPI(ch, size);
163    OHOS::DoSomethingInterestingWithMyAPIOne(ch, size);
164    free(ch);
165    ch = nullptr;
166    return 0;
167}
168
169