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 #define LOG_TAG "Upgrade"
16 #include "upgrade.h"
17
18 #include <chrono>
19 #include <cinttypes>
20
21 #include "crypto_manager.h"
22 #include "metadata/secret_key_meta_data.h"
23 #include "metadata/meta_data_manager.h"
24 #include "store_cache.h"
25 #include "directory_manager.h"
26 namespace OHOS::DistributedKv {
27 using namespace OHOS::DistributedData;
28 using system_clock = std::chrono::system_clock;
GetInstance()29 Upgrade &Upgrade::GetInstance()
30 {
31 static Upgrade upgrade;
32 return upgrade;
33 }
34
UpdateStore(const StoreMeta & old,const StoreMeta & meta,const std::vector<uint8_t> & pwd)35 Upgrade::DBStatus Upgrade::UpdateStore(const StoreMeta &old, const StoreMeta &meta, const std::vector<uint8_t> &pwd)
36 {
37 if (old.dataDir == meta.dataDir) {
38 return DBStatus::OK;
39 }
40
41 if (!exporter_ || !cleaner_) {
42 return DBStatus::NOT_SUPPORT;
43 }
44
45 DBPassword password;
46 auto backupFile = exporter_(old, password);
47 if (backupFile.empty()) {
48 return DBStatus::NOT_FOUND;
49 }
50
51 auto kvStore = GetDBStore(meta, pwd);
52 if (kvStore == nullptr) {
53 return DBStatus::DB_ERROR;
54 }
55
56 cleaner_(old);
57 return DBStatus::OK;
58 }
59
ExportStore(const StoreMeta & old,const StoreMeta & meta)60 Upgrade::DBStatus Upgrade::ExportStore(const StoreMeta &old, const StoreMeta &meta)
61 {
62 if (old.dataDir == meta.dataDir) {
63 return DBStatus::OK;
64 }
65
66 if (!exporter_) {
67 return DBStatus::NOT_SUPPORT;
68 }
69
70 DBPassword password;
71 auto backupFile = exporter_(old, password);
72 if (backupFile.empty()) {
73 return DBStatus::NOT_FOUND;
74 }
75 return DBStatus::OK;
76 }
77
UpdatePassword(const StoreMeta & meta,const std::vector<uint8_t> & password)78 void Upgrade::UpdatePassword(const StoreMeta &meta, const std::vector<uint8_t> &password)
79 {
80 if (!meta.isEncrypt) {
81 return ;
82 }
83
84 SecretKeyMetaData secretKey;
85 secretKey.storeType = meta.storeType;
86 secretKey.sKey = CryptoManager::GetInstance().Encrypt(password);
87 auto time = system_clock::to_time_t(system_clock::now());
88 secretKey.time = { reinterpret_cast<uint8_t *>(&time), reinterpret_cast<uint8_t *>(&time) + sizeof(time) };
89 MetaDataManager::GetInstance().SaveMeta(meta.GetSecretKey(), secretKey, true);
90 }
91
RegisterExporter(uint32_t version,Exporter exporter)92 bool Upgrade::RegisterExporter(uint32_t version, Exporter exporter)
93 {
94 (void)version;
95 exporter_ = std::move(exporter);
96 return exporter_ != nullptr;
97 }
98
RegisterCleaner(uint32_t version,Cleaner cleaner)99 bool Upgrade::RegisterCleaner(uint32_t version, Cleaner cleaner)
100 {
101 (void)version;
102 cleaner_ = std::move(cleaner);
103 return cleaner_ != nullptr;
104 }
105
GetDBStore(const StoreMeta & meta,const std::vector<uint8_t> & pwd)106 Upgrade::AutoStore Upgrade::GetDBStore(const StoreMeta &meta, const std::vector<uint8_t> &pwd)
107 {
108 DBManager manager(meta.appId, meta.user, meta.instanceId);
109 manager.SetKvStoreConfig({ DirectoryManager::GetInstance().GetStorePath(meta) });
110 auto release = [&manager](DBStore *store) { manager.CloseKvStore(store); };
111 DBPassword password;
112 password.SetValue(pwd.data(), pwd.size());
113 AutoStore dbStore(nullptr, release);
114 manager.GetKvStore(meta.storeId, StoreCache::GetDBOption(meta, password),
115 [&dbStore](auto dbStatus, auto *tmpStore) {
116 dbStore.reset(tmpStore);
117 });
118 return dbStore;
119 }
120 }