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 "base_config.h"
17 
18 #include "nlohmann/json.hpp"
19 
20 #include "security_guard_log.h"
21 
22 namespace OHOS::Security::SecurityGuard {
23 namespace {
24     constexpr int32_t CFG_FILE_MAX_SIZE = 1 * 1024 * 1024; // byte
25 }
26 
Check()27 bool BaseConfig::Check()
28 {
29     if (!stream_.is_open() ||!stream_) {
30         SGLOGE("stream error");
31         return false;
32     }
33 
34     stream_.seekg(0, std::ios::end);
35     int len = static_cast<int>(stream_.tellg());
36     if (len == 0 || len > CFG_FILE_MAX_SIZE) {
37         SGLOGE("stream is empty or too large, len = %{public}d", len);
38         stream_.close();
39         return false;
40     }
41     stream_.seekg(0, std::ios::beg);
42     return true;
43 }
44 
~BaseConfig()45 BaseConfig::~BaseConfig()
46 {
47     if (stream_.is_open()) {
48         stream_.close();
49     }
50 }
51 } // OHOS::Security::SecurityGuard
52