1 /*
2 * Copyright (c) 2024-2024 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 "byte_array_utils.h"
17 #include "signature_tools_errno.h"
18 #include "securec.h"
19
20 namespace OHOS {
21 namespace SignatureTools {
InsertIntToByteArray(std::vector<int8_t> & desByte,int index,int num)22 int ByteArrayUtils::InsertIntToByteArray(std::vector<int8_t>& desByte, int index, int num)
23 {
24 if (index + sizeof(int) > desByte.size()) {
25 return RET_FAILED;
26 }
27 int pos = index;
28 desByte[pos] = (num >> TRIPLE_BIT_SIZE) & 0xff;
29 pos++;
30 desByte[pos] = (num >> DOUBLE_BIT_SIZE) & 0xff;
31 pos++;
32 desByte[pos] = (num >> BIT_SIZE) & 0xff;
33 pos++;
34 desByte[pos] = num & 0xff;
35 pos++;
36 return pos;
37 }
38
InsertShortToByteArray(std::vector<int8_t> & desByte,size_t desByteLen,int index,short num)39 int ByteArrayUtils::InsertShortToByteArray(std::vector<int8_t>& desByte, size_t desByteLen, int index, short num)
40 {
41 if (index + HALF_INTEGER_BYTES > desByteLen) {
42 return RET_FAILED;
43 }
44 int pos = index;
45 desByte[pos] = (num >> BIT_SIZE) & 0xff;
46 pos++;
47 desByte[pos] = num & 0xff;
48 pos++;
49 return pos;
50 }
51
InsertByteToByteArray(std::vector<int8_t> & des,int start,std::vector<int8_t> src,int srcLen)52 int ByteArrayUtils::InsertByteToByteArray(std::vector<int8_t>& des, int start, std::vector<int8_t> src, int srcLen)
53 {
54 if (src.size() < srcLen) {
55 return -1;
56 }
57 if (memcpy_s(des.data() + start, srcLen, src.data(), srcLen) != EOK) {
58 return -1;
59 }
60 return start + srcLen;
61 }
62
InsertCharToByteArray(std::vector<int8_t> & des,int start,std::string src)63 int ByteArrayUtils::InsertCharToByteArray(std::vector<int8_t>& des, int start, std::string src)
64 {
65 if (src.length() + start > des.size()) {
66 return RET_FAILED;
67 }
68 for (int i = 0; i < src.length(); ++i) {
69 des[i + start] = src[i];
70 }
71 return start + src.length();
72 }
73
74 } // namespace SignatureTools
75 } // namespace OHOS
76