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 "mock_utils.h"
17 #include "dlp_permission_log.h"
18 #include "hex_string.h"
19 #include "nlohmann/json.hpp"
20 #include "securec.h"
21
22 namespace {
23 static constexpr OHOS::HiviewDFX::HiLogLabel LABEL = { LOG_CORE, SECURITY_DOMAIN_DLP_PERMISSION, "MockUtil" };
24 static const std::string POLICY_CERT = "policyCert";
25 static const std::string TEXT_CERT = "plaintextPolicy";
26 }
27 using unordered_json = nlohmann::ordered_json;
28
ModifyParseData(uint8_t ** data,uint32_t * dataLen,uint8_t * dataIn,uint32_t dataInLen)29 bool ModifyParseData(uint8_t** data, uint32_t* dataLen, uint8_t* dataIn, uint32_t dataInLen)
30 {
31 uint32_t encDataHexLen = dataInLen * OHOS::Security::DlpPermission::BYTE_TO_HEX_OPER_LENGTH + 1;
32 char* encDataHex = new (std::nothrow) char[encDataHexLen];
33 if (encDataHex == nullptr) {
34 DLP_LOG_ERROR(LABEL, "New memory fail.");
35 return false;
36 }
37 int32_t res = OHOS::Security::DlpPermission::ByteToHexString(dataIn, dataInLen, encDataHex, encDataHexLen);
38 if (res != 0) {
39 memset_s(encDataHex, encDataHexLen, 0, encDataHexLen);
40 delete[] encDataHex;
41 return false;
42 }
43 std::string txtStr = encDataHex;
44 unordered_json json;
45 json[TEXT_CERT] = txtStr;
46 json[POLICY_CERT] = unordered_json::parse(dataIn, dataIn + dataInLen + 1, nullptr, false);
47 std::string certStr = json.dump();
48 *data = reinterpret_cast<uint8_t *>(strdup(const_cast<char *>(certStr.c_str())));
49 *dataLen = certStr.length();
50 memset_s(encDataHex, encDataHexLen, 0, encDataHexLen);
51 delete[] encDataHex;
52 return true;
53 }