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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_IPC_CLIENT_H_ | |
6 #define REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_IPC_CLIENT_H_ | |
7 | |
8 #include <memory> | |
9 #include <string> | |
10 | |
11 #include "base/callback.h" | |
12 #include "base/memory/weak_ptr.h" | |
13 #include "base/threading/thread_checker.h" | |
14 #include "ipc/ipc_listener.h" | |
15 | |
16 namespace IPC { | |
17 class Channel; | |
18 class Message; | |
19 } // IPC | |
20 | |
21 namespace remoting { | |
22 | |
23 // Responsible for handing the client end of the IPC channel between the | |
24 // the network process (server) and remote_security_key process (client). | |
25 // The public methods are virtual to allow for using fake objects for testing. | |
26 class RemoteSecurityKeyIpcClient : public IPC::Listener { | |
27 public: | |
28 RemoteSecurityKeyIpcClient(); | |
29 ~RemoteSecurityKeyIpcClient() override; | |
30 | |
31 // Used to send gnubby extension messages to the client. | |
32 typedef base::Callback<void(const std::string& response_data)> | |
33 ResponseCallback; | |
34 | |
35 // Returns true if there is an active remoting session which supports | |
36 // security key request forwarding. | |
37 virtual bool WaitForSecurityKeyIpcServerChannel(); | |
38 | |
39 // Begins the process of connecting to the IPC channel which will be used for | |
40 // exchanging security key messages. | |
41 // |connection_ready_callback| is called when a channel has been established | |
42 // and security key requests can be sent. | |
43 // |connection_error_callback| is stored and will be called back for any | |
44 // unexpected errors that occur while establishing, or during, the session. | |
45 virtual void EstablishIpcConnection( | |
46 const base::Closure& connection_ready_callback, | |
47 const base::Closure& connection_error_callback); | |
48 | |
49 // Sends a security key request message to the network process to be forwarded | |
50 // to the remote client. | |
51 virtual bool SendSecurityKeyRequest( | |
52 const std::string& request_payload, | |
53 const ResponseCallback& response_callback); | |
54 | |
55 // Closes the IPC channel if connected. | |
56 virtual void CloseIpcConnection(); | |
57 | |
58 // Allows tests to override the initial IPC channel used to retrieve IPC | |
59 // connection details. | |
60 void SetInitialIpcChannelNameForTest( | |
61 const std::string& initial_ipc_channel_name); | |
62 | |
63 // Allows tests to override the expected session ID. | |
64 void SetExpectedIpcServerSessionIdForTest(uint32_t expected_session_id); | |
65 | |
66 private: | |
67 // IPC::Listener implementation. | |
68 bool OnMessageReceived(const IPC::Message& message) override; | |
69 void OnChannelConnected(int32_t peer_pid) override; | |
70 void OnChannelError() override; | |
71 | |
72 // Handles the ConnectionDetails IPC message. | |
73 void OnConnectionDetails(const std::string& request_data); | |
74 | |
75 // Handles security key response IPC messages. | |
76 void OnSecurityKeyResponse(const std::string& request_data); | |
77 | |
78 // Establishes a connection to the specified IPC Server channel. | |
79 void ConnectToIpcChannel(const std::string& channel_name); | |
80 | |
81 // Used to validate the IPC Server process is running in the correct session. | |
82 // '0' (default) corresponds to the session the network process runs in. | |
83 uint32_t expected_ipc_server_session_id_ = 0; | |
84 | |
85 // Name for the IPC channel used for exchanging security key messages. | |
86 std::string ipc_channel_name_; | |
87 | |
88 // Name of the initial IPC channel used to retrieve connection info. | |
89 std::string initial_ipc_channel_name_; | |
90 | |
91 // Signaled when the IPC connection is ready for security key requests. | |
92 base::Closure connection_ready_callback_; | |
93 | |
94 // Signaled when an error occurs in either the IPC channel or communication. | |
95 base::Closure connection_error_callback_; | |
96 | |
97 // Signaled when a security key response has been received. | |
98 ResponseCallback response_callback_; | |
99 | |
100 // Used for sending/receiving security key messages between processes. | |
101 std::unique_ptr<IPC::Channel> ipc_channel_; | |
102 | |
103 base::ThreadChecker thread_checker_; | |
104 | |
105 base::WeakPtrFactory<RemoteSecurityKeyIpcClient> weak_factory_; | |
106 | |
107 DISALLOW_COPY_AND_ASSIGN(RemoteSecurityKeyIpcClient); | |
108 }; | |
109 | |
110 } // namespace remoting | |
111 | |
112 #endif // REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_IPC_CLIENT_H_ | |
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