protected void SendMsgUserAuthInfoRequest(string name, string instruction, IList <AuthenticationPrompt> prompts)
{
if (_isDisposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshAuthenticationMessage.InfoRequest);
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(name));
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(instruction));
msgWriter.Write(""); // language tag (deprecated)
msgWriter.Write(prompts.Count);
// Write info for each prompt.
foreach (var prompt in prompts)
{
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(prompt.Prompt));
msgWriter.Write(prompt.Echo);
}
_client.SendPacket <SshAuthenticationMessage>(msgStream.ToArray());
}
}
internal void SendMsgChannelExtendedData(SshChannel channel, SshExtendedDataType dataType,
byte[] data)
{
if (_isDisposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
// Check if data is too large to send.
if (data.Length > Math.Min(channel.MaxPacketSize, channel.WindowSize))
{
throw new InvalidOperationException("Data is too large to send in one packet.");
}
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshConnectionMessage.ChannelExtendedData);
msgWriter.Write(channel.ClientChannel);
msgWriter.Write((uint)dataType);
msgWriter.WriteByteString(data);
_client.SendPacket <SshConnectionMessage>(msgStream.ToArray());
}
}
protected bool VerifyPublicKeySignature(PublicKeyAlgorithm alg, byte[] payload, int payloadOffset,
int payloadCount, byte[] signature)
{
using (var hashInputStream = new MemoryStream())
using (var hashInputWriter = new SshStreamWriter(hashInputStream))
{
// Write input data.
hashInputWriter.WriteByteString(_client.SessionId);
hashInputWriter.Write(payload, payloadOffset, payloadCount);
// Verify signature.
return(alg.VerifyData(hashInputStream.ToArray(), signature));
}
}
public byte[] CreateSignatureData(byte[] data)
{
using (var dataStream = new MemoryStream())
{
using (var dataWriter = new SshStreamWriter(dataStream))
{
// Create signature from hash data.
var signature = SignData(data);
// Write signature to stream.
dataWriter.Write(this.Name);
dataWriter.WriteByteString(signature);
}
return(dataStream.ToArray());
}
}
public byte[] CreateSignatureData(byte[] data)
{
using (var dataStream = new MemoryStream())
{
using (var dataWriter = new SshStreamWriter(dataStream))
{
// Create signature from hash data.
var signature = SignData(data);
// Write signature to stream.
dataWriter.Write(this.Name);
dataWriter.WriteByteString(signature);
}
return dataStream.ToArray();
}
}
protected void SendMsgUserAuthPasswdChangeReq(string prompt, string language)
{
if (_isDisposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshAuthenticationMessage.PasswordChangeRequired);
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(prompt));
msgWriter.Write(language);
_client.SendPacket <SshAuthenticationMessage>(msgStream.ToArray());
}
}
protected void SendMsgUserAuthPkOk(string algName, byte[] keyBlob)
{
if (_isDisposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshAuthenticationMessage.PublicKeyOk);
// Write public key information.
msgWriter.Write(algName);
msgWriter.WriteByteString(keyBlob);
_client.SendPacket <SshAuthenticationMessage>(msgStream.ToArray());
}
}
internal void SendMsgChannelOpenFailure(SshChannel channel, SshChannelOpenFailureReason reason,
string description, string language)
{
if (_isDisposed)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshConnectionMessage.ChannelOpenFailure);
msgWriter.Write(channel.ClientChannel);
msgWriter.Write((uint)reason);
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(description));
msgWriter.Write(language);
_client.SendPacket <SshConnectionMessage>(msgStream.ToArray());
}
}
protected bool VerifyPublicKeySignature(PublicKeyAlgorithm alg, byte[] payload, int payloadOffset,
int payloadCount, byte[] signature)
{
using (var hashInputStream = new MemoryStream())
using (var hashInputWriter = new SshStreamWriter(hashInputStream))
{
// Write input data.
hashInputWriter.WriteByteString(_client.SessionId);
hashInputWriter.Write(payload, payloadOffset, payloadCount);
// Verify signature.
return alg.VerifyData(hashInputStream.ToArray(), signature);
}
}
protected void SendMsgUserAuthPkOk(string algName, byte[] keyBlob)
{
if (_isDisposed) throw new ObjectDisposedException(this.GetType().FullName);
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshAuthenticationMessage.PublicKeyOk);
// Write public key information.
msgWriter.Write(algName);
msgWriter.WriteByteString(keyBlob);
_client.SendPacket<SshAuthenticationMessage>(msgStream.ToArray());
}
}
protected void SendMsgUserAuthPasswdChangeReq(string prompt, string language)
{
if (_isDisposed) throw new ObjectDisposedException(this.GetType().FullName);
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshAuthenticationMessage.PasswordChangeRequired);
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(prompt));
msgWriter.Write(language);
_client.SendPacket<SshAuthenticationMessage>(msgStream.ToArray());
}
}
protected void SendMsgUserAuthInfoRequest(string name, string instruction, IList<AuthenticationPrompt> prompts)
{
if (_isDisposed) throw new ObjectDisposedException(this.GetType().FullName);
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshAuthenticationMessage.InfoRequest);
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(name));
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(instruction));
msgWriter.Write(""); // language tag (deprecated)
msgWriter.Write(prompts.Count);
// Write info for each prompt.
foreach (var prompt in prompts)
{
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(prompt.Prompt));
msgWriter.Write(prompt.Echo);
}
_client.SendPacket<SshAuthenticationMessage>(msgStream.ToArray());
}
}
internal void SendMsgChannelOpenFailure(SshChannel channel, SshChannelOpenFailureReason reason,
string description, string language)
{
if (_isDisposed) throw new ObjectDisposedException(this.GetType().FullName);
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshConnectionMessage.ChannelOpenFailure);
msgWriter.Write(channel.ClientChannel);
msgWriter.Write((uint)reason);
msgWriter.WriteByteString(Encoding.UTF8.GetBytes(description));
msgWriter.Write(language);
_client.SendPacket<SshConnectionMessage>(msgStream.ToArray());
}
}
internal void SendMsgChannelExtendedData(SshChannel channel, SshExtendedDataType dataType,
byte[] data)
{
if (_isDisposed) throw new ObjectDisposedException(this.GetType().FullName);
// Check if data is too large to send.
if (data.Length > Math.Min(channel.MaxPacketSize, channel.WindowSize))
throw new InvalidOperationException("Data is too large to send in one packet.");
// Create message to send.
using (var msgStream = new MemoryStream())
using (var msgWriter = new SshStreamWriter(msgStream))
{
msgWriter.Write((byte)SshConnectionMessage.ChannelExtendedData);
msgWriter.Write(channel.ClientChannel);
msgWriter.Write((uint)dataType);
msgWriter.WriteByteString(data);
_client.SendPacket<SshConnectionMessage>(msgStream.ToArray());
}
}