1 /*
2 * Copyright (c) 2021-2024 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 "utils/string_utils.h"
17 #include "utils/file_utils.h"
18 #include <fcntl.h>
19 #include <unistd.h>
20
21 #include "securec.h"
22 #include "storage_service_log.h"
23
24 using namespace std;
25
26 namespace OHOS {
27 namespace StorageDaemon {
28 static constexpr int32_t BUFF_SIZE = 1024;
StringPrintf(const char * format,...)29 std::string StringPrintf(const char *format, ...)
30 {
31 va_list ap;
32 va_list apBackup;
33 va_start(ap, format);
34 va_copy(apBackup, ap);
35 char buf[BUFF_SIZE] = {0};
36 std::string result;
37
38 int count = vsnprintf_s(buf, sizeof(buf), sizeof(buf), format, apBackup);
39 if (count < 0) {
40 LOGE("vsnprintf_s error, errno %{public}d", errno);
41 } else if (count < BUFF_SIZE) {
42 result.append(buf, count);
43 } else {
44 LOGI("allocate larger buffer, len = %{public}d", count + 1);
45
46 char *newBuf = new char[count + 1];
47 if (newBuf != nullptr) {
48 count = vsnprintf_s(newBuf, count + 1, count + 1, format, ap);
49 if (count >= 0) {
50 result.append(newBuf, count);
51 }
52 }
53
54 delete[] newBuf;
55 }
56
57 va_end(apBackup);
58 va_end(ap);
59
60 return result;
61 }
62
SplitLine(std::string & line,std::string & token)63 std::vector<std::string> SplitLine(std::string &line, std::string &token)
64 {
65 std::vector<std::string> result;
66 std::string::size_type start;
67 std::string::size_type end;
68
69 start = 0;
70 end = line.find(token);
71 while (std::string::npos != end) {
72 result.push_back(line.substr(start, end - start));
73 start = end + token.size();
74 end = line.find(token, start);
75 }
76
77 if (start != line.length()) {
78 result.push_back(line.substr(start));
79 }
80
81 return result;
82 }
83
WriteFileSync(const char * path,const uint8_t * data,size_t size)84 bool WriteFileSync(const char *path, const uint8_t *data, size_t size)
85 {
86 FILE *f = fopen(path, "w");
87 if (f == nullptr) {
88 LOGE("open %{public}s failed, errno %{public}d", path, errno);
89 return false;
90 }
91 ChMod(path, S_IRUSR | S_IWUSR);
92 int fd = fileno(f);
93 if (fd == -1) {
94 LOGE("open %{public}s failed, errno %{public}d", path, errno);
95 (void)fclose(f);
96 return false;
97 }
98
99 long len = write(fd, data, size);
100 if (len < 0) {
101 LOGE("write %{public}s failed, errno %{public}d", path, errno);
102 (void)fclose(f);
103 return false;
104 }
105 if (static_cast<size_t>(len) != size) {
106 LOGE("write return len %{public}ld, not equal to content length %{public}zu", len, size);
107 (void)fclose(f);
108 return false;
109 }
110
111 if (fsync(fd) != 0) {
112 LOGE("fsync %{public}s failed, errno %{public}d", path, errno);
113 (void)fclose(f);
114 return false;
115 }
116 (void)fclose(f);
117 return true;
118 }
119
SaveStringToFileSync(const std::string & path,const std::string & data)120 bool SaveStringToFileSync(const std::string &path, const std::string &data)
121 {
122 if (path.empty() || data.empty()) {
123 return false;
124 }
125 LOGI("enter %{public}s, size=%{public}zu", path.c_str(), data.length());
126 return WriteFileSync(path.c_str(), reinterpret_cast<const uint8_t *>(data.c_str()), data.size());
127 }
128
StringIsNumber(const std::string & content)129 bool StringIsNumber(const std::string &content)
130 {
131 if (content.empty()) {
132 return false;
133 }
134 bool isNum = true;
135 for (char c : content) {
136 if (!isdigit(c)) {
137 isNum = false;
138 break;
139 }
140 }
141 return isNum;
142 }
143
IsStringExist(const std::list<std::string> & strList,const std::string & content)144 bool IsStringExist(const std::list<std::string> &strList, const std::string &content)
145 {
146 auto it = std::find(strList.begin(), strList.end(), content);
147 return it != strList.end();
148 }
149
ListToString(const std::list<std::string> & strList)150 std::string ListToString(const std::list<std::string> &strList)
151 {
152 if (strList.empty()) {
153 return "";
154 }
155 std::string result;
156 for (auto &iter : strList) {
157 result += iter + ",";
158 }
159 return result.empty() ? "" : result.substr(0, result.length() -1);
160 }
161 } // namespace StorageDaemon
162 } // namespace OHOS
163