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 #ifndef OHOS_IPC_DBINDER_DATABUS_SOCKET_LISTENER_H
17 #define OHOS_IPC_DBINDER_DATABUS_SOCKET_LISTENER_H
18 
19 #include <list>
20 #include <unordered_map>
21 
22 #include "singleton.h"
23 
24 #include "dbinder_softbus_client.h"
25 #include "ipc_types.h"
26 
27 namespace OHOS {
28 static constexpr QosTV QOS_TV[] = {
29     { .qos = QOS_TYPE_MIN_BW, .value = RPC_QOS_MIN_BW },
30     { .qos = QOS_TYPE_MAX_LATENCY, .value = RPC_QOS_MAX_LATENCY },
31     { .qos = QOS_TYPE_MIN_LATENCY, .value = RPC_QOS_MIN_LATENCY }
32 };
33 static constexpr uint32_t QOS_COUNT = static_cast<uint32_t>(sizeof(QOS_TV) / sizeof(QosTV));
34 
35 static const std::string DBINDER_PKG_NAME = "DBinderBus";
36 static const std::string DBINDER_SOCKET_NAME_PREFIX = "DBinder";
37 
38 class DBinderSocketInfo {
39 public:
40     DBinderSocketInfo(const std::string &ownName, const std::string &peerName, const std::string &networkId);
41     DBinderSocketInfo() = default;
42     virtual ~DBinderSocketInfo() = default;
43     std::string GetOwnName() const;
44     std::string GetPeerName() const;
45     std::string GetNetworkId() const;
46 
47     bool operator==(const DBinderSocketInfo &info) const
48     {
49         return (info.GetOwnName().compare(ownName_) == 0 &&
50             info.GetPeerName().compare(peerName_) == 0 &&
51             info.GetNetworkId().compare(networkId_) == 0);
52     }
53 
54 private:
55     std::string ownName_;
56     std::string peerName_;
57     std::string networkId_;
58 };
59 
60 struct SocketInfoHash {
operatorSocketInfoHash61     size_t operator()(const DBinderSocketInfo &info) const
62     {
63         return std::hash<std::string>()(info.GetOwnName()) ^
64             std::hash<std::string>()(info.GetPeerName()) ^
65             std::hash<std::string>()(info.GetNetworkId());
66     }
67 };
68 
69 class DatabusSocketListener {
70     DECLARE_DELAYED_SINGLETON(DatabusSocketListener)
71 public:
72     int32_t StartServerListener(const std::string &ownName);
73     int32_t CreateClientSocket(const std::string &ownName, const std::string &peerName,
74         const std::string &networkId);
75     void ShutdownSocket(int32_t socket);
76 
77     static void ServerOnBind(int32_t socket, PeerSocketInfo info);
78     static void ServerOnShutdown(int32_t socket, ShutdownReason reason);
79     static void ClientOnBind(int32_t socket, PeerSocketInfo info);
80     static void ClientOnShutdown(int32_t socket, ShutdownReason reason);
81     static void OnBytesReceived(int32_t socket, const void *data, uint32_t dataLen);
82     static void EraseDeviceLock(DBinderSocketInfo info);
83     static void RemoveSessionName(void);
84 
85 private:
86     std::shared_ptr<std::mutex> QueryOrNewInfoMutex(DBinderSocketInfo socketInfo);
87 
88     ISocketListener clientListener_ {};
89     ISocketListener serverListener_ {};
90 
91     static inline std::mutex socketInfoMutex_;
92     static inline std::mutex deviceMutex_;
93     static inline std::unordered_map<DBinderSocketInfo, std::shared_ptr<std::mutex>, SocketInfoHash> infoMutexMap_ {};
94     static inline std::unordered_map<DBinderSocketInfo, int32_t, SocketInfoHash> socketInfoMap_ {};
95 };
96 } // namespace OHOS
97 #endif // OHOS_IPC_DBINDER_DATABUS_SOCKET_LISTENER_H
98