1 /*
2 * Copyright (c) 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 "interface_manager.h"
17
18 #include "adapter/p2p_adapter.h"
19 #include "conn_log.h"
20 #include "data/interface_info.h"
21 #include "link_info.h"
22 #include "utils/wifi_direct_anonymous.h"
23 #include "utils/wifi_direct_utils.h"
24
25 namespace OHOS::SoftBus {
UpdateInterface(InterfaceInfo::InterfaceType type,const Updater & updater)26 int InterfaceManager::UpdateInterface(InterfaceInfo::InterfaceType type, const Updater &updater)
27 {
28 std::unique_lock lock(lock_);
29 return updater(interfaces_[static_cast<int>(type)]);
30 }
31
ReadInterface(InterfaceInfo::InterfaceType type,const Reader & reader)32 int InterfaceManager::ReadInterface(InterfaceInfo::InterfaceType type, const Reader &reader)
33 {
34 std::shared_lock lock(lock_);
35 return reader(interfaces_[static_cast<int>(type)]);
36 }
37
IsInterfaceAvailable(InterfaceInfo::InterfaceType type,bool forShare) const38 bool InterfaceManager::IsInterfaceAvailable(InterfaceInfo::InterfaceType type, bool forShare) const
39 {
40 std::shared_lock lock(lock_);
41 auto info = interfaces_[static_cast<int>(type)];
42 if (!info.IsEnable()) {
43 CONN_LOGW(CONN_WIFI_DIRECT, "isEnable=0, interface type=%{public}d", static_cast<int>(type));
44 return false;
45 }
46
47 if (info.GetRole() == LinkInfo::LinkMode::GC) {
48 CONN_LOGW(CONN_WIFI_DIRECT, "already gc");
49 return false;
50 }
51
52 (void)forShare;
53 return true;
54 }
55
LockInterface(InterfaceInfo::InterfaceType type,const std::string & owner)56 void InterfaceManager::LockInterface(InterfaceInfo::InterfaceType type, const std::string &owner)
57 {
58 // ATTENTION: MUST NOT access interface lock under interface manager lock, otherwise deadlock will happen
59 CONN_LOGI(CONN_WIFI_DIRECT, "current owner=%{public}s",
60 WifiDirectAnonymizeDeviceId(exclusives_[static_cast<int>(type)].owner_).c_str());
61 exclusives_[static_cast<int>(type)].lock_.lock();
62 exclusives_[static_cast<int>(type)].owner_ = owner;
63 CONN_LOGI(CONN_WIFI_DIRECT, "success owner=%{public}s",
64 WifiDirectAnonymizeDeviceId(exclusives_[static_cast<int>(type)].owner_).c_str());
65 }
66
UnlockInterface(InterfaceInfo::InterfaceType type)67 void InterfaceManager::UnlockInterface(InterfaceInfo::InterfaceType type)
68 {
69 CONN_LOGI(CONN_WIFI_DIRECT, "current owner=%{public}s",
70 WifiDirectAnonymizeDeviceId(exclusives_[static_cast<int>(type)].owner_).c_str());
71 // ATTENTION: MUST NOT access interface lock under interface manager lock, otherwise deadlock will happen
72 exclusives_[static_cast<int>(type)].lock_.unlock();
73 exclusives_[static_cast<int>(type)].owner_ = "";
74 }
75
InitInterface(InterfaceInfo::InterfaceType type)76 void InterfaceManager::InitInterface(InterfaceInfo::InterfaceType type)
77 {
78 std::string name;
79 int32_t capability = 0;
80 if (type == InterfaceInfo::InterfaceType::P2P) {
81 name = IF_NAME_P2P0;
82 capability = static_cast<int32_t>(LinkInfo::LinkMode::GO) | static_cast<uint32_t>(LinkInfo::LinkMode::GC);
83 }
84 if (type == InterfaceInfo::InterfaceType::HML) {
85 name = IF_NAME_HML;
86 capability = static_cast<int32_t>(LinkInfo::LinkMode::HML);
87 }
88 interfaces_[type].SetRole(LinkInfo::LinkMode::NONE);
89 interfaces_[type].SetName(name);
90 interfaces_[type].SetIsEnable(P2pAdapter::IsWifiP2pEnabled());
91 interfaces_[type].SetBaseMac(WifiDirectUtils::MacArrayToString(WifiDirectUtils::GetInterfaceMacAddr(name)));
92 interfaces_[type].SetCapability(capability);
93 }
94
Init()95 void InterfaceManager::Init()
96 {
97 GetInstance().InitInterface(InterfaceInfo::InterfaceType::P2P);
98 GetInstance().InitInterface(InterfaceInfo::InterfaceType::HML);
99 }
100 } // namespace OHOS::SoftBus