1 /*
2 * Copyright (C) 2025 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 "file_access_service_client.h"
17
18 #include "bundle_constants.h"
19 #include "user_access_tracer.h"
20 #include "file_access_framework_errno.h"
21 #include "file_access_service_ipc_interface_code.h"
22 #include "hilog_wrapper.h"
23 #include "hitrace_meter.h"
24 #include "ipc_skeleton.h"
25 #include "iservice_registry.h"
26 #include "system_ability_definition.h"
27
28 namespace OHOS {
29 namespace FileAccessFwk {
30 constexpr int LOAD_SA_TIMEOUT_MS = 5000;
31 const std::string UID_TAG = "uid:";
GetInstance()32 sptr<IFileAccessServiceBase> FileAccessServiceClient::GetInstance()
33 {
34 HILOG_INFO("Getinstance");
35 std::unique_lock<std::mutex> lock(proxyMutex_);
36 if (serviceProxy_ != nullptr) {
37 return serviceProxy_;
38 }
39
40 auto samgr = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
41 if (samgr == nullptr) {
42 HILOG_ERROR("Samgr is nullptr");
43 return nullptr;
44 }
45 sptr<ServiceProxyLoadCallback> loadCallback(new ServiceProxyLoadCallback());
46 if (loadCallback == nullptr) {
47 HILOG_ERROR("loadCallback is nullptr");
48 return nullptr;
49 }
50 int32_t ret = samgr->LoadSystemAbility(FILE_ACCESS_SERVICE_ID, loadCallback);
51 if (ret != ERR_OK) {
52 HILOG_ERROR("Failed to Load systemAbility, systemAbilityId:%{public}d, ret code:%{public}d",
53 FILE_ACCESS_SERVICE_ID, ret);
54 return nullptr;
55 }
56
57 auto waitStatus = loadCallback->proxyConVar_.wait_for(
58 lock, std::chrono::milliseconds(LOAD_SA_TIMEOUT_MS),
59 [loadCallback]() { return loadCallback->isLoadSuccess_.load(); });
60 if (!waitStatus) {
61 HILOG_ERROR("Load FileAccessService SA timeout");
62 return nullptr;
63 }
64 return serviceProxy_;
65 }
66
OnLoadSystemAbilitySuccess(int32_t systemAbilityId,const sptr<IRemoteObject> & remoteObject)67 void FileAccessServiceClient::ServiceProxyLoadCallback::OnLoadSystemAbilitySuccess(
68 int32_t systemAbilityId,
69 const sptr<IRemoteObject> &remoteObject)
70 {
71 HILOG_INFO("Load FileAccessService SA success,systemAbilityId:%{public}d, remoteObj result:%{private}s",
72 systemAbilityId, (remoteObject == nullptr ? "false" : "true"));
73 if (systemAbilityId != FILE_ACCESS_SERVICE_ID || remoteObject == nullptr) {
74 isLoadSuccess_.store(false);
75 proxyConVar_.notify_one();
76 return;
77 }
78 std::unique_lock<std::mutex> lock(proxyMutex_);
79 serviceProxy_ = iface_cast<IFileAccessServiceBase>(remoteObject);
80 if (!serviceProxy_) {
81 HILOG_ERROR("Failed to get remote object");
82 isLoadSuccess_.store(false);
83 proxyConVar_.notify_one();
84 return;
85 }
86 auto remoteObj = serviceProxy_->AsObject();
87 if (!remoteObj) {
88 HILOG_ERROR("Failed to get remote object");
89 serviceProxy_ = nullptr;
90 isLoadSuccess_.store(false);
91 proxyConVar_.notify_one();
92 return;
93 }
94
95 auto callback = [](const wptr<IRemoteObject> &obj) {
96 FileAccessServiceClient::InvaildInstance();
97 HILOG_ERROR("service died");
98 };
99 sptr<ProxyDeathRecipient> deathRecipient = sptr(new ProxyDeathRecipient(callback));
100 remoteObj->AddDeathRecipient(deathRecipient);
101 isLoadSuccess_.store(true);
102 proxyConVar_.notify_one();
103 }
104
OnLoadSystemAbilityFail(int32_t systemAbilityId)105 void FileAccessServiceClient::ServiceProxyLoadCallback::OnLoadSystemAbilityFail(int32_t systemAbilityId)
106 {
107 HILOG_INFO("Load FileAccessService SA failed,systemAbilityId:%{public}d", systemAbilityId);
108 std::unique_lock<std::mutex> lock(proxyMutex_);
109 serviceProxy_ = nullptr;
110 isLoadSuccess_.store(false);
111 proxyConVar_.notify_one();
112 }
113
InvaildInstance()114 void FileAccessServiceClient::InvaildInstance()
115 {
116 HILOG_INFO("invalid instance");
117 std::unique_lock<std::mutex> lock(proxyMutex_);
118 serviceProxy_ = nullptr;
119 }
120 } // namespace FileAccessFwk
121 } // namespace OHOS
122