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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_MESSAGE_READER_IMPL_H_ | |
6 #define REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_MESSAGE_READER_IMPL_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "base/callback.h" | |
11 #include "base/files/file.h" | |
12 #include "base/macros.h" | |
13 #include "base/memory/weak_ptr.h" | |
14 #include "base/threading/thread.h" | |
15 #include "remoting/host/security_key/remote_security_key_message_reader.h" | |
16 #include "remoting/host/security_key/security_key_message.h" | |
17 | |
18 namespace base { | |
19 class SingleThreadTaskRunner; | |
20 } // namespace base | |
21 | |
22 namespace remoting { | |
23 | |
24 // RemoteSecurityKeyMessageReader implementation that receives messages from | |
25 // a pipe. | |
26 class RemoteSecurityKeyMessageReaderImpl | |
27 : public RemoteSecurityKeyMessageReader { | |
28 public: | |
29 explicit RemoteSecurityKeyMessageReaderImpl(base::File input_file); | |
30 ~RemoteSecurityKeyMessageReaderImpl() override; | |
31 | |
32 // RemoteSecurityKeyMessageReader interface. | |
33 void Start(const SecurityKeyMessageCallback& message_callback, | |
34 const base::Closure& error_callback) override; | |
35 | |
36 private: | |
37 // Reads a message from the remote security key process and passes it to | |
38 // |message_callback_| on the originating thread. Run on |read_task_runner_|. | |
39 void ReadMessage(); | |
40 | |
41 // Reads the nubmer of bytes indicated by |bytes_to_read| into |buffer| from | |
42 // |read_stream_|. Returns true if all bytes were retrieved successfully. | |
43 bool ReadFromStream(char* buffer, size_t bytes_to_read); | |
44 | |
45 // Callback run on |read_task_runner_| when an error occurs or EOF is reached. | |
46 void NotifyError(); | |
47 | |
48 // Used for callbacks on the appropriate task runner to signal status changes. | |
49 // These callbacks are invoked on |main_task_runner_|. | |
50 void InvokeMessageCallback(std::unique_ptr<SecurityKeyMessage> message); | |
51 void InvokeErrorCallback(); | |
52 | |
53 base::File read_stream_; | |
54 | |
55 // Caller-supplied message and error callbacks. | |
56 SecurityKeyMessageCallback message_callback_; | |
57 base::Closure error_callback_; | |
58 | |
59 // Thread used for blocking IO operations. | |
60 base::Thread reader_thread_; | |
61 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_; | |
62 scoped_refptr<base::SingleThreadTaskRunner> read_task_runner_; | |
63 | |
64 base::WeakPtr<RemoteSecurityKeyMessageReaderImpl> reader_; | |
65 base::WeakPtrFactory<RemoteSecurityKeyMessageReaderImpl> weak_factory_; | |
66 | |
67 DISALLOW_COPY_AND_ASSIGN(RemoteSecurityKeyMessageReaderImpl); | |
68 }; | |
69 | |
70 } // namespace remoting | |
71 | |
72 #endif // REMOTING_HOST_SECURITY_KEY_REMOTE_SECURITY_KEY_MESSAGE_READER_IMPL_H_ | |
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