1 /*
2 * Copyright (c) 2022 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 <dirent.h>
17 #include <unistd.h>
18 #include "constant.h"
19
20 namespace OHOS {
21 namespace DistributedKv {
22 // the Key Prefix for Meta data of KvStore.
23 const std::string KvStoreMetaRow::KEY_PREFIX = "KvStoreMetaData";
24
25 const std::string SecretMetaRow::KEY_PREFIX = "SecretKey";
26
27 /* version for distributed kv data service. */
28 const std::string Constant::VERSION = "1";
29
30 /* meta name for distributed kv data service. */
31 const std::string Constant::META_DIR_NAME = "Meta";
32
33 /* name for distributed kv data service. */
34 const std::string Constant::SERVICE_NAME = "mdds";
35
36 /* root path for distributed kv data service. */
37 const std::string Constant::ROOT_PATH = "/data/misc_de/0";
38
39 /* root path for distributeddata service and system services. */
40 const std::string Constant::ROOT_PATH_DE = "/data/misc_de/0";
41
42 /* root path for self-developed and non-self-developed app. */
43 const std::string Constant::ROOT_PATH_CE = "/data/misc_ce/0";
44
45 // the max length for key is 1024.
46 const size_t Constant::MAX_KEY_LENGTH = 1024;
47
48 // the max length for StoreId is 128.
49 const size_t Constant::MAX_STORE_ID_LENGTH = 128;
50
51 // the max length for value is 4M.
52 const size_t Constant::MAX_VALUE_LENGTH = 4 * 1024 * 1024;
53
54 // the max batch for putBatch is 128.
55 const size_t Constant::MAX_BATCH_SIZE = 128;
56
57 // the max capacity for ipc is 800K.
58 const size_t Constant::MAX_IPC_CAPACITY = 800 * 1024;
59
60 // the default mode is 0755, stands for r/w/x for user, r/x for group, r/x for others.
61 const mode_t Constant::DEFAULT_MODE = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
62
63 // the mode for dir is 0755, r/w/x for user, r/-/x for group, r/-/x for others.
64 const mode_t Constant::DEFAULT_MODE_DIR = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
65
66 // the mode for file is 0600, r/w/- for user, -/-/- for group, -/-/- for others.
67 const mode_t Constant::DEFAULT_MODE_FILE = S_IRUSR | S_IWUSR;
68
69 // Size threshold of switching to large data is a little smaller than MAX_IPC_CAPACITY.
70 const int Constant::SWITCH_RAW_DATA_SIZE = 700 * 1024;
71
72 const int Constant::MAX_OPEN_KVSTORES = 16;
73
74 // default group id for synchronization.
75 const std::string Constant::DEFAULT_GROUP_ID = "default";
76
77 // true indicates the ownership of distributed data is DEVICE, otherwise, ACCOUNT
78 const bool Constant::STOREID_ONLY_FLAG = true;
79
80 // service meta db name.
81 const std::string Constant::SERVICE_META_DB_NAME = "service_meta";
82
83 const std::string Constant::KEY_SEPARATOR = "###";
84
85 const std::string Constant::ROOT_KEY_GENERATED = "RootKeyGenerated";
86
GetKeyFor(const std::string & key)87 std::vector<uint8_t> KvStoreMetaRow::GetKeyFor(const std::string &key)
88 {
89 std::string str = Constant::Concatenate({ KvStoreMetaRow::KEY_PREFIX, Constant::KEY_SEPARATOR, key });
90 return std::vector<uint8_t>(str.begin(), str.end());
91 }
92
GetKeyFor(const std::string & key)93 std::vector<uint8_t> SecretMetaRow::GetKeyFor(const std::string &key)
94 {
95 std::string str = Constant::Concatenate({ SecretMetaRow::KEY_PREFIX, Constant::KEY_SEPARATOR, key});
96 return std::vector<uint8_t>(str.begin(), str.end());
97 }
98
Concatenate(std::initializer_list<std::string> stringList)99 std::string Constant::Concatenate(std::initializer_list<std::string> stringList)
100 {
101 std::string result;
102 size_t result_size = 0;
103 for (const std::string &str : stringList) {
104 result_size += str.size();
105 }
106 result.reserve(result_size);
107 for (const std::string &str : stringList) {
108 result.append(str.data(), str.size());
109 }
110 return result;
111 }
112
GetDefaultDeviceAccountId()113 std::string Constant::GetDefaultDeviceAccountId()
114 {
115 return "0";
116 }
117
GetDefaultHarmonyAccountName()118 std::string Constant::GetDefaultHarmonyAccountName()
119 {
120 return "default";
121 }
122 } // namespace DistributedKv
123 } // namespace OHOS
124