1 /*
2 * Copyright (c) 2021 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 #include "ext_storage_subscriber.h"
16
17 #include <cinttypes>
18
19 #include "appexecfwk_errors.h"
20 #include "bundle_info.h"
21 #include "common_event_manager.h"
22 #include "common_event_support.h"
23 #include "log.h"
24 #include "string_wrapper.h"
25 #include "int_wrapper.h"
26 #include "want.h"
27
28 using namespace OHOS::AAFwk;
29 namespace OHOS {
30 namespace FileManagerService {
31 /**
32 * @brief Receiver Constructor.
33 * @param subscriberInfo Subscriber info.
34 */
ExtStorageSubscriber(const EventFwk::CommonEventSubscribeInfo & subscriberInfo)35 ExtStorageSubscriber::ExtStorageSubscriber(const EventFwk::CommonEventSubscribeInfo &subscriberInfo)
36 : EventFwk::CommonEventSubscriber(subscriberInfo)
37 {}
38
39 std::shared_ptr<ExtStorageSubscriber> ExtStorageSubscriber_ = nullptr;
Subscriber(void)40 bool ExtStorageSubscriber::Subscriber(void)
41 {
42 if (ExtStorageSubscriber_ == nullptr) {
43 EventFwk::MatchingSkills matchingSkills;
44 matchingSkills.AddEvent(EventFwk::CommonEventSupport::COMMON_EVENT_DISK_UNMOUNTED);
45 matchingSkills.AddEvent(EventFwk::CommonEventSupport::COMMON_EVENT_DISK_MOUNTED);
46
47 EventFwk::CommonEventSubscribeInfo subscribeInfo(matchingSkills);
48 ExtStorageSubscriber_ = std::make_shared<ExtStorageSubscriber>(subscribeInfo);
49 EventFwk::CommonEventManager::SubscribeCommonEvent(ExtStorageSubscriber_);
50 }
51 return true;
52 }
53
54 /**
55 * @brief Receive common event.
56 * @param eventData Common event data.
57 */
OnReceiveEvent(const EventFwk::CommonEventData & eventData)58 void ExtStorageSubscriber::OnReceiveEvent(const EventFwk::CommonEventData &eventData)
59 {
60 const AAFwk::Want& want = eventData.GetWant();
61 std::string action = want.GetAction();
62 DEBUG_LOG("%{public}s, action:%{public}s.", __func__, action.c_str());
63
64 const AAFwk::WantParams wantParams = want.GetParams();
65 std::string id = AAFwk::String::Unbox(AAFwk::IString::Query(wantParams.GetParam("id")));
66 std::string diskId = AAFwk::String::Unbox(AAFwk::IString::Query(wantParams.GetParam("diskId")));
67 DEBUG_LOG("%{public}s, id:%{public}s.", __func__, id.c_str());
68 DEBUG_LOG("%{public}s, diskId:%{public}s.", __func__, diskId.c_str());
69
70 if (action == EventFwk::CommonEventSupport::COMMON_EVENT_DISK_MOUNTED) {
71 int32_t volumeState = AAFwk::Integer::Unbox(AAFwk::IInteger::Query(wantParams.GetParam("volumeState")));
72 std::string fsUuid = AAFwk::String::Unbox(AAFwk::IString::Query(wantParams.GetParam("fsUuid")));
73 std::string path = AAFwk::String::Unbox(AAFwk::IString::Query(wantParams.GetParam("path")));
74 DEBUG_LOG("%{public}s, volumeState:%{public}d.", __func__, volumeState);
75 DEBUG_LOG("%{public}s, id:%{public}s, fsUuid:%{public}s, path:%{public}s.",
76 __func__, id.c_str(), fsUuid.c_str(), path.c_str());
77
78 ExtStorageStatus extStatus(id, diskId, fsUuid, path, VolumeState(volumeState));
79 mountStatus.insert(std::pair<std::string, ExtStorageStatus>(path, extStatus));
80 }
81 }
82
CheckMountPoint(const std::string & path)83 bool ExtStorageSubscriber::CheckMountPoint(const std::string &path)
84 {
85 auto extStorageStatus = mountStatus.find(path);
86 if (extStorageStatus == mountStatus.end()) {
87 return false;
88 } else {
89 if (extStorageStatus->second.GetVolumeState() == VolumeState::MOUNTED) {
90 return true;
91 }
92 return false;
93 }
94 }
95 } // namespace FileManagerService
96 } // namespace OHOS