1 /*
2 * Copyright (C) 2021 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 "securec.h"
17 #include "log_helper.h"
18
19 const int MAX_REMAIN_CHARACTER_NUM = 3;
20
EncryptLogMsg(const char * srcMsg,char * desMsg,int desLen)21 void EncryptLogMsg(const char *srcMsg, char *desMsg, int desLen)
22 {
23 if (desMsg == NULL || desLen <= 0) {
24 return;
25 }
26 if (srcMsg == NULL || strlen(srcMsg) == 0) {
27 desMsg[0] = '\0';
28 return;
29 }
30 int srcLen = strlen(srcMsg);
31 if (strncpy_s(desMsg, desLen, srcMsg, srcLen) != EOK) {
32 desMsg[0] = '\0';
33 return;
34 }
35 desMsg[desLen - 1] = '\0';
36 int i = 0;
37 int j = (srcLen > (desLen - 1)) ? (desLen - 1) : srcLen;
38 j -= 1;
39 int k = MAX_REMAIN_CHARACTER_NUM;
40 while (k > 0 && i < j) {
41 ++i;
42 --j;
43 --k;
44 }
45 if (k == 0) {
46 if (i > j) {
47 desMsg[i] = '*';
48 desMsg[j] = '*';
49 }
50 while (i <= j) {
51 desMsg[i] = '*';
52 ++i;
53 }
54 } else {
55 if (i > j) {
56 desMsg[i] = '*';
57 desMsg[j] = '*';
58 } else {
59 desMsg[i] = '*';
60 }
61 }
62 return;
63 }