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using System;
using System.Collections.Generic;
using System.IO;
using Org.BouncyCastle.Tls.Crypto;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Tls
{
public sealed class SessionParameters
{
public sealed class Builder
{
private int m_cipherSuite = -1;
private Certificate m_localCertificate = null;
private TlsSecret m_masterSecret = null;
private ProtocolVersion m_negotiatedVersion;
private Certificate m_peerCertificate = null;
private byte[] m_pskIdentity = null;
private byte[] m_srpIdentity = null;
private byte[] m_encodedServerExtensions = null;
private bool m_extendedMasterSecret = false;
public Builder()
{
}
public SessionParameters Build()
{
Validate(m_cipherSuite >= 0, "cipherSuite");
Validate(m_masterSecret != null, "masterSecret");
return new SessionParameters(m_cipherSuite, m_localCertificate, m_masterSecret, m_negotiatedVersion,
m_peerCertificate, m_pskIdentity, m_srpIdentity, m_encodedServerExtensions, m_extendedMasterSecret);
}
public Builder SetCipherSuite(int cipherSuite)
{
this.m_cipherSuite = cipherSuite;
return this;
}
public Builder SetExtendedMasterSecret(bool extendedMasterSecret)
{
this.m_extendedMasterSecret = extendedMasterSecret;
return this;
}
public Builder SetLocalCertificate(Certificate localCertificate)
{
this.m_localCertificate = localCertificate;
return this;
}
public Builder SetMasterSecret(TlsSecret masterSecret)
{
this.m_masterSecret = masterSecret;
return this;
}
public Builder SetNegotiatedVersion(ProtocolVersion negotiatedVersion)
{
this.m_negotiatedVersion = negotiatedVersion;
return this;
}
public Builder SetPeerCertificate(Certificate peerCertificate)
{
this.m_peerCertificate = peerCertificate;
return this;
}
public Builder SetPskIdentity(byte[] pskIdentity)
{
this.m_pskIdentity = pskIdentity;
return this;
}
public Builder SetSrpIdentity(byte[] srpIdentity)
{
this.m_srpIdentity = srpIdentity;
return this;
}
/// <exception cref="IOException"/>
public Builder SetServerExtensions(IDictionary<int, byte[]> serverExtensions)
{
if (serverExtensions == null || serverExtensions.Count < 1)
{
this.m_encodedServerExtensions = null;
}
else
{
MemoryStream buf = new MemoryStream();
TlsProtocol.WriteExtensions(buf, serverExtensions);
this.m_encodedServerExtensions = buf.ToArray();
}
return this;
}
private void Validate(bool condition, string parameter)
{
if (!condition)
throw new InvalidOperationException("Required session parameter '" + parameter + "' not configured");
}
}
private readonly int m_cipherSuite;
private readonly Certificate m_localCertificate;
private readonly TlsSecret m_masterSecret;
private readonly ProtocolVersion m_negotiatedVersion;
private readonly Certificate m_peerCertificate;
private readonly byte[] m_pskIdentity;
private readonly byte[] m_srpIdentity;
private readonly byte[] m_encodedServerExtensions;
private readonly bool m_extendedMasterSecret;
private SessionParameters(int cipherSuite, Certificate localCertificate, TlsSecret masterSecret,
ProtocolVersion negotiatedVersion, Certificate peerCertificate, byte[] pskIdentity, byte[] srpIdentity,
byte[] encodedServerExtensions, bool extendedMasterSecret)
{
this.m_cipherSuite = cipherSuite;
this.m_localCertificate = localCertificate;
this.m_masterSecret = masterSecret;
this.m_negotiatedVersion = negotiatedVersion;
this.m_peerCertificate = peerCertificate;
this.m_pskIdentity = Arrays.Clone(pskIdentity);
this.m_srpIdentity = Arrays.Clone(srpIdentity);
this.m_encodedServerExtensions = encodedServerExtensions;
this.m_extendedMasterSecret = extendedMasterSecret;
}
public int CipherSuite
{
get { return m_cipherSuite; }
}
public void Clear()
{
if (m_masterSecret != null)
{
m_masterSecret.Destroy();
}
}
public SessionParameters Copy()
{
return new SessionParameters(m_cipherSuite, m_localCertificate, m_masterSecret, m_negotiatedVersion,
m_peerCertificate, m_pskIdentity, m_srpIdentity, m_encodedServerExtensions, m_extendedMasterSecret);
}
public bool IsExtendedMasterSecret
{
get { return m_extendedMasterSecret; }
}
public Certificate LocalCertificate
{
get { return m_localCertificate; }
}
public TlsSecret MasterSecret
{
get { return m_masterSecret; }
}
public ProtocolVersion NegotiatedVersion
{
get { return m_negotiatedVersion; }
}
public Certificate PeerCertificate
{
get { return m_peerCertificate; }
}
public byte[] PskIdentity
{
get { return m_pskIdentity; }
}
/// <exception cref="IOException"/>
public IDictionary<int, byte[]> ReadServerExtensions()
{
if (m_encodedServerExtensions == null)
return null;
return TlsProtocol.ReadExtensions(new MemoryStream(m_encodedServerExtensions, false));
}
public byte[] SrpIdentity
{
get { return m_srpIdentity; }
}
}
}
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