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 "edm_parameter_utils.h"
17
18 #include "netmgr_ext_log_wrapper.h"
19 #include "parameter.h"
20
21 namespace OHOS {
22 namespace NetManagerStandard {
23 constexpr uint32_t PARAM_BUFFER_LENGTH = 128;
24
GetInstance()25 EdmParameterUtils &EdmParameterUtils::GetInstance()
26 {
27 static EdmParameterUtils instance;
28 return instance;
29 }
30
CheckBoolEdmParameter(const char * key,const char * defaultValue)31 bool EdmParameterUtils::CheckBoolEdmParameter(const char *key, const char *defaultValue)
32 {
33 std::lock_guard<std::recursive_mutex> guard(mutex_);
34 char paramOutBuf[PARAM_BUFFER_LENGTH] = {0};
35 int ret = GetParameter(key, defaultValue, paramOutBuf, PARAM_BUFFER_LENGTH);
36 NETMGR_EXT_LOG_I("NetworkShare StartSharing check EDM param %{public}d", ret);
37 if (ret > 0) {
38 if (strcmp(paramOutBuf, "true") == 0) {
39 return true;
40 } else {
41 NETMGR_EXT_LOG_E("NetworkShare StartSharing check EDM param result: %{public}s", paramOutBuf);
42 }
43 }
44 return false;
45 }
46
RegisterEdmParameterChangeEvent(const char * key,ParameterChgPtr callback,void * context)47 void EdmParameterUtils::RegisterEdmParameterChangeEvent(const char *key, ParameterChgPtr callback, void *context)
48 {
49 std::lock_guard<std::recursive_mutex> guard(mutex_);
50 int ret = WatchParameter(key, callback, context);
51 if (ret != 0) {
52 NETMGR_EXT_LOG_E("RegisterEdmParameterChangeEvent %{public}s failed with %{public}d.",
53 key, ret);
54 }
55 }
56
UnRegisterEdmParameterChangeEvent(const char * key)57 void EdmParameterUtils::UnRegisterEdmParameterChangeEvent(const char *key)
58 {
59 std::lock_guard<std::recursive_mutex> guard(mutex_);
60 int ret = RemoveParameterWatcher(key, nullptr, nullptr);
61 if (ret != 0) {
62 NETMGR_EXT_LOG_E("UnRegisterEdmParameterChangeEvent %{public}s err: %{public}d", key, ret);
63 }
64 }
65
ConvertToInt64(const std::string & str,int64_t & value)66 bool EdmParameterUtils::ConvertToInt64(const std::string &str, int64_t &value)
67 {
68 char* end;
69 errno = 0; // 清除 errno
70 if (str.empty()) {
71 NETMGR_EXT_LOG_E("string error. str: %{public}s", str.c_str());
72 return false;
73 }
74
75 value = std::strtoll(str.c_str(), &end, 10); // 10:十进制
76
77 // 检查错误:
78 // 1. 若没有数字被转换
79 if (end == str.c_str()) {
80 NETMGR_EXT_LOG_E("string error. str: %{public}s", str.c_str());
81 return false;
82 }
83 // 2. 若存在范围错误（过大或过小）
84 if (errno == ERANGE && (value == HUGE_VAL || value == HUGE_VALF || value == HUGE_VALL)) {
85 NETMGR_EXT_LOG_E("string error. str: %{public}s", str.c_str());
86 return false;
87 }
88 // 3. 若字符串包含非数字字符
89 if (*end != '\0') {
90 NETMGR_EXT_LOG_E("string error. str: %{public}s", str.c_str());
91 return false;
92 }
93
94 return true;
95 }
96
Constrain(int amount,int low,int high)97 uint64_t EdmParameterUtils::Constrain(int amount, int low, int high)
98 {
99 return (amount < low) ? low : (amount > high) ? high : amount;
100 }
101 } // namespace NetManagerStandard
102 } // namespace OHOS