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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef DEVICE_U2F_U2F_MESSAGE_H_ | 5 #ifndef DEVICE_U2F_U2F_MESSAGE_H_ |
6 #define DEVICE_U2F_U2F_MESSAGE_H_ | 6 #define DEVICE_U2F_U2F_MESSAGE_H_ |
7 | 7 |
8 #include <list> | 8 #include <list> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/gtest_prod_util.h" | 11 #include "base/gtest_prod_util.h" |
12 #include "device/u2f/u2f_packet.h" | 12 #include "device/u2f/u2f_packet.h" |
13 | 13 |
14 namespace net { | 14 namespace net { |
15 class IOBufferWithSize; | 15 class IOBufferWithSize; |
16 } // namespace net | 16 } // namespace net |
17 | 17 |
18 namespace device { | 18 namespace device { |
19 | 19 |
20 // U2fMessages are defined by the specification at | 20 // U2fMessages are defined by the specification at |
21 // http://fidoalliance.org/specs/u2f-specs-1.0-bt-nfc-id-amendment/fido-u2f-hid-
protocol.html | 21 // http://fidoalliance.org/specs/u2f-specs-1.0-bt-nfc-id-amendment/fido-u2f-hid-
protocol.html |
22 // A U2fMessage object represents a list of U2fPackets. Basic information | 22 // A U2fMessage object represents a list of U2fPackets. Basic information |
23 // about the message are available through class methods. | 23 // about the message are available through class methods. |
24 class U2fMessage : public base::RefCountedThreadSafe<U2fMessage> { | 24 class U2fMessage { |
25 public: | 25 public: |
26 enum class Type : uint8_t { | 26 enum class Type : uint8_t { |
27 CMD_PING = 0x81, | 27 CMD_PING = 0x81, |
28 CMD_MSG = 0x83, | 28 CMD_MSG = 0x83, |
29 CMD_INIT = 0x86, | 29 CMD_INIT = 0x86, |
30 CMD_WINK = 0x88, | 30 CMD_WINK = 0x88, |
31 CMD_ERROR = 0xbf, | 31 CMD_ERROR = 0xbf, |
32 }; | 32 }; |
33 | 33 |
34 static scoped_refptr<U2fMessage> Create(uint32_t channel_id, | 34 U2fMessage(uint32_t channel_id, Type type, const std::vector<uint8_t>& data); |
35 Type type, | 35 U2fMessage(std::unique_ptr<U2fInitPacket> init_packet, size_t remaining_size); |
36 const std::vector<uint8_t>& data); | 36 ~U2fMessage(); |
| 37 |
| 38 static std::unique_ptr<U2fMessage> Create(uint32_t channel_id, |
| 39 Type type, |
| 40 const std::vector<uint8_t>& data); |
37 // Reconstruct a message from serialized message data | 41 // Reconstruct a message from serialized message data |
38 static scoped_refptr<U2fMessage> CreateFromSerializedData( | 42 static std::unique_ptr<U2fMessage> CreateFromSerializedData( |
39 scoped_refptr<net::IOBufferWithSize> buf); | 43 scoped_refptr<net::IOBufferWithSize> buf); |
40 // Pop front of queue with next packet | 44 // Pop front of queue with next packet |
41 scoped_refptr<net::IOBufferWithSize> PopNextPacket(); | 45 scoped_refptr<net::IOBufferWithSize> PopNextPacket(); |
42 // Adds a continuation packet to the packet list, from the serialized | 46 // Adds a continuation packet to the packet list, from the serialized |
43 // response value | 47 // response value |
44 bool AddContinuationPacket(scoped_refptr<net::IOBufferWithSize> packet_buf); | 48 bool AddContinuationPacket(scoped_refptr<net::IOBufferWithSize> packet_buf); |
45 size_t NumPackets(); | 49 size_t NumPackets(); |
46 // Returns entire message payload | 50 // Returns entire message payload |
47 std::vector<uint8_t> GetMessagePayload() const; | 51 std::vector<uint8_t> GetMessagePayload() const; |
48 uint32_t channel_id() { return channel_id_; } | 52 uint32_t channel_id() { return channel_id_; } |
49 // Message construction complete | 53 // Message construction complete |
50 bool MessageComplete(); | 54 bool MessageComplete(); |
51 std::list<scoped_refptr<U2fPacket>>::const_iterator begin(); | 55 std::list<std::unique_ptr<U2fPacket>>::const_iterator begin(); |
52 std::list<scoped_refptr<U2fPacket>>::const_iterator end(); | 56 std::list<std::unique_ptr<U2fPacket>>::const_iterator end(); |
53 | |
54 protected: | |
55 virtual ~U2fMessage(); | |
56 | 57 |
57 private: | 58 private: |
58 friend class base::RefCountedThreadSafe<U2fMessage>; | |
59 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestMaxLengthPacketConstructors); | 59 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestMaxLengthPacketConstructors); |
60 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestMessagePartitoning); | 60 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestMessagePartitoning); |
61 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestDeconstruct); | 61 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestDeconstruct); |
62 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestMaxSize); | 62 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestMaxSize); |
63 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestDeserialize); | 63 FRIEND_TEST_ALL_PREFIXES(U2fMessageTest, TestDeserialize); |
64 | 64 |
65 static constexpr size_t kInitPacketHeader = 7; | 65 static constexpr size_t kInitPacketHeader = 7; |
66 static constexpr size_t kContinuationPacketHeader = 5; | 66 static constexpr size_t kContinuationPacketHeader = 5; |
67 static constexpr size_t kMaxHidPacketSize = 64; | 67 static constexpr size_t kMaxHidPacketSize = 64; |
68 static constexpr size_t kInitPacketDataSize = | 68 static constexpr size_t kInitPacketDataSize = |
69 kMaxHidPacketSize - kInitPacketHeader; | 69 kMaxHidPacketSize - kInitPacketHeader; |
70 static constexpr size_t kContinuationPacketDataSize = | 70 static constexpr size_t kContinuationPacketDataSize = |
71 kMaxHidPacketSize - kContinuationPacketHeader; | 71 kMaxHidPacketSize - kContinuationPacketHeader; |
72 // Messages are limited to an init packet and 128 continuation packets | 72 // Messages are limited to an init packet and 128 continuation packets |
73 // Maximum payload length therefore is 64-7 + 128 * (64-5) = 7609 bytes | 73 // Maximum payload length therefore is 64-7 + 128 * (64-5) = 7609 bytes |
74 static constexpr size_t kMaxMessageSize = 7609; | 74 static constexpr size_t kMaxMessageSize = 7609; |
75 | 75 |
76 U2fMessage(uint32_t channel_id, Type type, const std::vector<uint8_t>& data); | 76 std::list<std::unique_ptr<U2fPacket>> packets_; |
77 U2fMessage(scoped_refptr<U2fInitPacket> init_packet, size_t remaining_size); | |
78 | |
79 std::list<scoped_refptr<U2fPacket>> packets_; | |
80 size_t remaining_size_; | 77 size_t remaining_size_; |
81 uint32_t channel_id_; | 78 uint32_t channel_id_; |
82 }; | 79 }; |
83 } // namespace device | 80 } // namespace device |
84 | 81 |
85 #endif // DEVICE_U2F_U2F_MESSAGE_H_ | 82 #endif // DEVICE_U2F_U2F_MESSAGE_H_ |
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