1 // Transport Security Layer (TLS)
2 // Copyright (c) 2003-2004 Carlos Guzman Alvarez
5 // Permission is hereby granted, free of charge, to any person obtaining
6 // a copy of this software and associated documentation files (the
7 // "Software"), to deal in the Software without restriction, including
8 // without limitation the rights to use, copy, modify, merge, publish,
9 // distribute, sublicense, and/or sell copies of the Software, and to
10 // permit persons to whom the Software is furnished to do so, subject to
11 // the following conditions:
13 // The above copyright notice and this permission notice shall be
14 // included in all copies or substantial portions of the Software.
16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 using System
.Globalization
;
29 using Mono
.Security
.Protocol
.Tls
.Handshake
;
30 using Mono
.Security
.Protocol
.Tls
.Handshake
.Server
;
32 namespace Mono
.Security
.Protocol
.Tls
34 internal class ServerRecordProtocol
: RecordProtocol
38 public ServerRecordProtocol(
40 ServerContext context
) : base(innerStream
, context
)
48 public override void SendRecord(HandshakeType type
)
50 // Create the record message
51 HandshakeMessage msg
= this.createServerHandshakeMessage(type
);
55 this.SendRecord(msg
.ContentType
, msg
.EncodeMessage());
60 // Reset message contents
66 #region Handshake Processing Methods
68 protected override void ProcessChangeCipherSpec()
70 // Reset sequence numbers
71 this.context
.ReadSequenceNumber
= 0;
73 // Make the pending state to be the current state
74 this.context
.IsActual
= true;
77 protected override void ProcessHandshakeMessage(TlsStream handMsg
)
79 HandshakeType handshakeType
= (HandshakeType
)handMsg
.ReadByte();
80 HandshakeMessage message
= null;
82 // Read message length
83 int length
= handMsg
.ReadInt24();
86 byte[] data
= new byte[length
];
87 handMsg
.Read(data
, 0, length
);
89 // Create and process the server message
90 message
= this.createClientHandshakeMessage(handshakeType
, data
);
93 // Update the last handshake message
94 this.Context
.LastHandshakeMsg
= handshakeType
;
105 #region Server Handshake Message Factories
107 private HandshakeMessage
createClientHandshakeMessage(
108 HandshakeType type
, byte[] buffer
)
112 case HandshakeType
.ClientHello
:
113 return new TlsClientHello(this.context
, buffer
);
115 case HandshakeType
.Certificate
:
116 return new TlsClientCertificate(this.context
, buffer
);
118 case HandshakeType
.ClientKeyExchange
:
119 return new TlsClientKeyExchange(this.context
, buffer
);
121 case HandshakeType
.CertificateVerify
:
122 return new TlsClientCertificateVerify(this.context
, buffer
);
124 case HandshakeType
.Finished
:
125 return new TlsClientFinished(this.context
, buffer
);
128 throw new TlsException(
129 AlertDescription
.UnexpectedMessage
,
130 String
.Format(CultureInfo
.CurrentUICulture
,
131 "Unknown server handshake message received ({0})",
136 private HandshakeMessage
createServerHandshakeMessage(
141 case HandshakeType
.HelloRequest
:
142 this.SendRecord(HandshakeType
.ClientHello
);
145 case HandshakeType
.ServerHello
:
146 return new TlsServerHello(this.context
);
148 case HandshakeType
.Certificate
:
149 return new TlsServerCertificate(this.context
);
151 case HandshakeType
.ServerKeyExchange
:
152 return new TlsServerKeyExchange(this.context
);
154 case HandshakeType
.CertificateRequest
:
155 return new TlsServerCertificateRequest(this.context
);
157 case HandshakeType
.ServerHelloDone
:
158 return new TlsServerHelloDone(this.context
);
160 case HandshakeType
.Finished
:
161 return new TlsServerFinished(this.context
);
164 throw new InvalidOperationException("Unknown server handshake message type: " + type
.ToString() );