1/*
2 * Copyright (c) 2022 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
17#include "checkmessage_fuzzer.h"
18
19#include "accesstoken_kit.h"
20#include "if_system_ability_manager.h"
21#include "iservice_registry.h"
22#include "message_option.h"
23#include "message_parcel.h"
24#include "nativetoken_kit.h"
25#include "system_ability_definition.h"
26#include "token_setproc.h"
27
28#define private public
29#include "locator_ability.h"
30#undef private
31
32namespace OHOS {
33using namespace OHOS::Location;
34const int32_t MAX_MEM_SIZE = 4 * 1024 * 1024;
35const int32_t U32DATA_SIZE = 4;
36const int32_t U64DATA_SIZE = 8;
37const int32_t MIN_SIZE_NUM = 8;
38
39
40uint32_t GetU32Data(const char* ptr)
41{
42    return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
43}
44
45uint64_t GetU64Data(const char* ptr)
46{
47    uint64_t u64data = (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]);
48    return (u64data << 32) | (ptr[4] << 24) | (ptr[5] << 16) | (ptr[6] << 8) | (ptr[7]);
49}
50
51char* ParseData(const uint8_t* data, size_t size)
52{
53    if (data == nullptr) {
54        return nullptr;
55    }
56
57    if (size > MAX_MEM_SIZE) {
58        return nullptr;
59    }
60
61    char* ch = (char *)malloc(size + 1);
62    if (ch == nullptr) {
63        return nullptr;
64    }
65
66    (void)memset_s(ch, size + 1, 0x00, size + 1);
67    if (memcpy_s(ch, size, data, size) != EOK) {
68        free(ch);
69        ch = nullptr;
70        return nullptr;
71    }
72    return ch;
73}
74
75bool CheckMessageFuzzTest(const char* data, size_t size)
76{
77    MessageParcel reply;
78    AppIdentity identity;
79    int offset = 0;
80    if (size <= 32) {
81        return true;
82    }
83    identity.SetPid(static_cast<pid_t>(GetU64Data(data)));
84    identity.SetUid(static_cast<pid_t>(GetU64Data(data + (offset += U64DATA_SIZE))));
85    identity.SetTokenId(GetU32Data(data + (offset += U64DATA_SIZE)));
86    identity.SetTokenIdEx(GetU64Data(data + (offset += U32DATA_SIZE)));
87    identity.SetFirstTokenId(GetU32Data(data + (offset += U64DATA_SIZE)));
88    identity.SetBundleName(data + (offset += U32DATA_SIZE));
89
90    auto locatorAbility = sptr<LocatorAbility>(new (std::nothrow) LocatorAbility());
91    locatorAbility->CheckLocationPermission(reply, identity);
92    locatorAbility->CheckSettingsPermission(reply, identity);
93    locatorAbility->CheckPreciseLocationPermissions(reply, identity);
94    locatorAbility->CheckLocationSwitchState(reply);
95    return true;
96}
97} // namespace OHOS
98
99/* Fuzzer entry point */
100extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
101{
102    if (size < OHOS::MIN_SIZE_NUM) {
103        return 0;
104    }
105    char* ch = OHOS::ParseData(data, size);
106    if (ch != nullptr) {
107        OHOS::CheckMessageFuzzTest(ch, size);
108        free(ch);
109        ch = nullptr;
110    }
111    return 0;
112}
113
114