public void request(Session session, Channel channel)
{
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
bool reply = waitForReply();
if (reply)
channel.Replay = -1;
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.Recipient);
buf.putString("subsystem");
buf.putByte((byte)(waitForReply() ? 1 : 0));
buf.putString(m_subsystem);
session.write(packet);
if (reply)
{
while (channel.Replay == -1)
{
try { Thread.sleep(10); }
catch { }
}
if (channel.Replay == 0)
throw new JSchException("failed to send subsystem request");
}
}
public void request(Session session, Channel channel)
{
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
bool reply = waitForReply();
if (reply)
{
channel.Replay = -1;
}
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.Recipient);
buf.putString(Util.getBytes("subsystem"));
buf.putByte((byte)(waitForReply() ? 1 : 0));
buf.putString(Util.getBytes("sftp"));
session.write(packet);
if (reply)
{
while (channel.Replay == -1)
{
try { System.Threading.Thread.Sleep(10); }
catch//(Exception ee)
{
}
}
if (channel.Replay == 0)
{
throw new JSchException("failed to send sftp request");
}
}
}
public override void connect()
{
try
{
if (!m_session.IsConnected())
throw new JSchException("session is down");
Buffer buf = new Buffer(150);
Packet packet = new Packet(buf);
packet.reset();
buf.putByte((byte)90);
buf.putString(Util.getBytes("direct-tcpip"));
buf.putInt(m_id);
buf.putInt(m_lwsize);
buf.putInt(m_lmpsize);
buf.putString(Util.getBytes(m_host));
buf.putInt(m_port);
buf.putString(Util.getBytes(m_originator_IP_address));
buf.putInt(m_originator_port);
m_session.write(packet);
int retry = 1000;
try
{
while (Recipient == -1
&& m_session.IsConnected()
&& retry > 0
&& !m_eof_remote
)
{
Thread.Sleep(50);
retry--;
}
}
catch { }
if (!m_session.IsConnected())
throw new JSchException("session is down");
if (retry == 0 || this.m_eof_remote)
throw new JSchException("channel is not opened.");
m_connected = true;
m_thread = new Thread(this);
m_thread.Start();
}
catch (Exception e)
{
m_io.close();
m_io = null;
Channel.Remove(this);
if (e is JSchException)
throw (JSchException)e;
}
}
public void request(Session session, Channel channel)
{
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.Recipient);
buf.putString(Util.getBytes("signal"));
buf.putByte((byte)(waitForReply() ? 1 : 0));
buf.putString(Util.getBytes(m_signal));
session.write(packet);
}
public void request(Session session, Channel channel)
{
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
// send
// byte SSH_MSG_CHANNEL_REQUEST(98)
// uint32 recipient channel
// string request type // "shell"
// boolean want reply // 0
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.Recipient);
buf.putString(Util.getBytes("shell"));
buf.putByte((byte)(waitForReply() ? 1 : 0));
session.write(packet);
}
public override void init(Session session, byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C)
{
m_session = session;
m_V_S = V_S;
m_V_C = V_C;
m_I_S = I_S;
m_I_C = I_C;
try
{
Type t = Type.GetType(session.getConfig("sha-1"));
m_sha = (HASH)(Activator.CreateInstance(t));
m_sha.init();
}
catch (Exception) { }
m_buf = new Buffer();
m_packet = new Packet(m_buf);
try
{
Type t = Type.GetType(session.getConfig("dh"));
m_dh = (DH)(Activator.CreateInstance(t));
m_dh.init();
}
catch (Exception e)
{
throw e;
}
m_packet.reset();
m_buf.putByte((byte)0x22);
m_buf.putInt(m_min);
m_buf.putInt(m_preferred);
m_buf.putInt(m_max);
session.write(m_packet);
m_state = SSH_MSG_KEX_DH_GEX_GROUP;
}
public override void Run()
{
Buffer buf = new Buffer(m_rmpsize);
Packet packet = new Packet(buf);
int i = -1;
try
{
while (isConnected() &&
m_thread != null &&
m_io != null &&
m_io.m_ins != null)
{
i = m_io.m_ins.Read(buf.m_buffer,
14,
buf.m_buffer.Length - 14
- 32 - 20 // padding and mac
);
if (i == 0)
continue;
if (i == -1)
{
eof();
break;
}
if (m_close)
break;
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_DATA);
buf.putInt(m_recipient);
buf.putInt(i);
buf.skip(i);
m_session.write(packet, this, i);
}
}
catch (Exception) { }
m_thread = null;
}
public void request(Session session, Channel channel)
{
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
//byte SSH_MSG_CHANNEL_REQUEST
//uint32 recipient_channel
//string "window-change"
//boolean FALSE
//uint32 terminal width, columns
//uint32 terminal height, rows
//uint32 terminal width, pixels
//uint32 terminal height, pixels
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_REQUEST);
buf.putInt(channel.Recipient);
buf.putString(Util.getBytes("window-change"));
buf.putByte((byte)(waitForReply() ? 1 : 0));
buf.putInt(m_width_columns);
buf.putInt(m_height_rows);
buf.putInt(m_width_pixels);
buf.putInt(m_height_pixels);
session.write(packet);
}
public void sendKeepAliveMsg()
{
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
packet.reset();
buf.putByte((byte)SSH_MSG_GLOBAL_REQUEST);
buf.putString(m_keepalivemsg);
buf.putByte((byte)1);
write(packet);
}
public void sendIgnore()
{
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
packet.reset();
buf.putByte((byte)SSH_MSG_IGNORE);
write(packet);
}
public void Run()
{
m_thread = this;
byte[] foo;
Buffer buf = new Buffer();
Packet packet = new Packet(buf);
int i = 0;
Channel channel;
int[] start = new int[1];
int[] length = new int[1];
KeyExchange kex = null;
try
{
while (m_isConnected &&
m_thread != null)
{
buf = read(buf);
int msgType = buf.m_buffer[5] & 0xff;
if (kex != null && kex.getState() == msgType)
{
bool result = kex.next(buf);
if (!result)
throw new JSchException("verify: " + result);
continue;
}
switch (msgType)
{
case SSH_MSG_KEXINIT:
kex = receive_kexinit(buf);
break;
case SSH_MSG_NEWKEYS:
send_newkeys();
receive_newkeys(buf, kex);
kex = null;
break;
case SSH_MSG_CHANNEL_DATA:
buf.getInt();
buf.getByte();
buf.getByte();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
foo = buf.getString(start, length);
if (channel == null)
break;
try
{
channel.write(foo, start[0], length[0]);
}
catch (Exception)
{
try
{
channel.disconnect();
}
catch (Exception)
{ }
break;
}
int len = length[0];
channel.LocalWindowSize = channel.LocalWindowSize - len;
if (channel.LocalWindowSize < channel.LocalWindowSizeMax / 2)
{
packet.reset();
buf.putByte((byte)SSH_MSG_CHANNEL_WINDOW_ADJUST);
buf.putInt(channel.Recipient);
buf.putInt(channel.LocalWindowSizeMax - channel.LocalWindowSize);
write(packet);
channel.LocalWindowSize = channel.LocalWindowSizeMax;
}
break;
case SSH_MSG_CHANNEL_EXTENDED_DATA:
buf.getInt();
buf.getShort();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
buf.getInt(); // data_type_code == 1
foo = buf.getString(start, length);
if (channel == null)
break;
channel.write_ext(foo, start[0], length[0]);
len = length[0];
channel.LocalWindowSize = channel.LocalWindowSize - len;
if (channel.LocalWindowSize < channel.LocalWindowSizeMax / 2)
{
packet.reset();
buf.putByte((byte)SSH_MSG_CHANNEL_WINDOW_ADJUST);
buf.putInt(channel.Recipient);
buf.putInt(channel.LocalWindowSizeMax - channel.LocalWindowSize);
write(packet);
channel.LocalWindowSize = channel.LocalWindowSizeMax;
}
break;
case SSH_MSG_CHANNEL_WINDOW_ADJUST:
buf.getInt();
buf.getShort();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
if (channel == null)
break;
channel.addRemoteWindowSize(buf.getInt());
break;
case SSH_MSG_CHANNEL_EOF:
buf.getInt();
buf.getShort();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
if (channel != null)
channel.eof_remote();
break;
case SSH_MSG_CHANNEL_CLOSE:
buf.getInt();
buf.getShort();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
if (channel != null)
channel.disconnect();
break;
case SSH_MSG_CHANNEL_OPEN_CONFIRMATION:
buf.getInt();
buf.getShort();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
channel.Recipient = buf.getInt();
channel.RemoteWindowSize = buf.getInt();
channel.RemotePacketSize = buf.getInt();
break;
case SSH_MSG_CHANNEL_OPEN_FAILURE:
buf.getInt();
buf.getShort();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
int reason_code = buf.getInt();
channel.ExitStatus = reason_code;
channel.IsClosed = true;
channel.IsEofRemote = true;
channel.Recipient = 0;
break;
case SSH_MSG_CHANNEL_REQUEST:
buf.getInt();
buf.getShort();
i = buf.getInt();
foo = buf.getString();
bool reply = (buf.getByte() != 0);
channel = Channel.FindChannel(i, this);
if (channel != null)
{
byte reply_type = (byte)SSH_MSG_CHANNEL_FAILURE;
if (Util.getStringUTF8(foo) == "exit-status")
{
i = buf.getInt(); // exit-status
channel.ExitStatus = i;
reply_type = (byte)SSH_MSG_CHANNEL_SUCCESS;
}
if (reply)
{
packet.reset();
buf.putByte(reply_type);
buf.putInt(channel.Recipient);
write(packet);
}
}
break;
case SSH_MSG_CHANNEL_OPEN:
buf.getInt();
buf.getShort();
string ctyp = Util.getStringUTF8(buf.getString());
if ("forwarded-tcpip" != ctyp && !("x11" == ctyp && m_x11_forwarding))
{
Console.WriteLine("Session.run: CHANNEL OPEN " + ctyp);
throw new IOException("Session.run: CHANNEL OPEN " + ctyp);
}
else
{
channel = Channel.getChannel(ctyp);
addChannel(channel);
channel.getData(buf);
channel.Init();
packet.reset();
buf.putByte((byte)SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
buf.putInt(channel.Recipient);
buf.putInt(channel.Id);
buf.putInt(channel.LocalWindowSize);
buf.putInt(channel.LocalPacketSize);
write(packet);
Thread tmp = new Thread(channel);
tmp.Name = "Channel " + ctyp + " " + m_host;
tmp.Start();
break;
}
case SSH_MSG_CHANNEL_SUCCESS:
buf.getInt();
buf.getShort();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
if (channel == null)
break;
channel.Replay = 1;
break;
case SSH_MSG_CHANNEL_FAILURE:
buf.getInt();
buf.getShort();
i = buf.getInt();
channel = Channel.FindChannel(i, this);
if (channel == null)
break;
channel.Replay = 0;
break;
case SSH_MSG_GLOBAL_REQUEST:
buf.getInt();
buf.getShort();
foo = buf.getString(); // request name
reply = (buf.getByte() != 0);
if (reply)
{
packet.reset();
buf.putByte((byte)SSH_MSG_REQUEST_FAILURE);
write(packet);
}
break;
case SSH_MSG_REQUEST_FAILURE:
case SSH_MSG_REQUEST_SUCCESS:
Thread t = m_grr.getThread();
if (t != null)
{
m_grr.setReply(msgType == SSH_MSG_REQUEST_SUCCESS ? 1 : 0);
t.Interrupt();
}
break;
default:
throw new IOException("Unknown SSH message type " + msgType);
}
}
}
catch (Exception)
{ }
try
{
disconnect();
}
catch (NullReferenceException)
{ }
catch (Exception)
{ }
m_isConnected = false;
}
private void setPortForwarding(int rport)
{
lock (m_grr)
{
Buffer buf = new Buffer(100); // ??
Packet packet = new Packet(buf);
try
{
packet.reset();
buf.putByte((byte)SSH_MSG_GLOBAL_REQUEST);
buf.putString("tcpip-forward");
buf.putByte((byte)1);
buf.putString("0.0.0.0");
buf.putInt(rport);
write(packet);
}
catch (Exception e)
{
throw new JSchException(e.ToString());
}
m_grr.setThread(Thread.currentThread());
try
{
Thread.Sleep(10000);
}
catch { }
int reply = m_grr.getReply();
m_grr.setThread(null);
if (reply == 0)
throw new JSchException("remote port forwarding failed for listen port " + rport);
}
}
public override void init(Session session, byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C)
{
m_session = session;
m_V_S = V_S;
m_V_C = V_C;
m_I_S = I_S;
m_I_C = I_C;
try
{
Type t = Type.GetType(session.getConfig("sha-1"));
m_sha = (HASH)(Activator.CreateInstance(t));
m_sha.init();
}
catch (Exception ex)
{
throw ex;
}
m_buf = new Buffer();
m_packet = new Packet(m_buf);
try
{
Type t = Type.GetType(session.getConfig("dh"));
m_dh = (DH)(Activator.CreateInstance(t));
m_dh.init();
}
catch (Exception ee)
{
throw ee;
}
m_dh.P = m_p;
m_dh.G = m_g;
// The client responds with:
// byte SSH_MSG_KEXDH_INIT(30)
// mpint e <- g^x mod p
// x is a random number (1 < x < (p-1)/2)
m_e = m_dh.E;
m_packet.reset();
m_buf.putByte((byte)SSH_MSG_KEXDH_INIT);
m_buf.putMPInt(m_e);
session.write(m_packet);
m_state = SSH_MSG_KEXDH_REPLY;
}
internal virtual void eof()
{
// Thread.dumpStack();
if (m_close || m_eof_local)
return;
m_eof_local = true;
try
{
Buffer buf = new Buffer(100);
Packet packet = new Packet(buf);
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_EOF);
buf.putInt(Recipient);
m_session.write(packet);
}
catch (Exception)
{ }
}
/*
http://www1.ietf.org/internet-drafts/draft-ietf-secsh-connect-24.txt
5.3 Closing a Channel
When a party will no longer send more data to a channel, it SHOULD
send SSH_MSG_CHANNEL_EOF.
byte SSH_MSG_CHANNEL_EOF
uint32 recipient_channel
No explicit response is sent to this message. However, the
application may send EOF to whatever is at the other end of the
channel. Note that the channel remains open after this message, and
more data may still be sent In the other direction. This message
does not consume window space and can be sent even if no window space
is available.
When either party wishes to terminate the channel, it sends
SSH_MSG_CHANNEL_CLOSE. Upon receiving this message, a party MUST
send back a SSH_MSG_CHANNEL_CLOSE unless it has already sent this
message for the channel. The channel is considered closed for a
party when it has both sent and received SSH_MSG_CHANNEL_CLOSE, and
the party may then reuse the channel number. A party MAY send
SSH_MSG_CHANNEL_CLOSE without having sent or received
SSH_MSG_CHANNEL_EOF.
byte SSH_MSG_CHANNEL_CLOSE
uint32 recipient_channel
This message does not consume window space and can be sent even if no
window space is available.
It is recommended that any data sent before this message is delivered
to the actual destination, if possible.
*/
internal virtual void close()
{
if (m_close) return;
m_close = true;
try
{
Buffer buf = new Buffer(100);
Packet packet = new Packet(buf);
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_CLOSE);
buf.putInt(Recipient);
m_session.write(packet);
}
catch (Exception)
{ }
}
public virtual void connect()
{
if (!m_session.IsConnected())
throw new JSchException("session is down");
try
{
Buffer buf = new Buffer(100);
Packet packet = new Packet(buf);
packet.reset();
buf.putByte((byte)90);
buf.putString(m_type);
buf.putInt(m_id);
buf.putInt(m_lwsize);
buf.putInt(m_lmpsize);
m_session.write(packet);
int retry = 1000;
while (Recipient == -1
&& m_session.IsConnected()
&& retry > 0
)
{
try
{
Thread.sleep(50);
}
catch (Exception) { }
retry--;
}
if (!m_session.IsConnected())
throw new JSchException("session is down");
if (retry == 0)
throw new JSchException("channel is not opened.");
m_connected = true;
start();
}
catch (Exception e)
{
m_connected = false;
if (e is JSchException)
throw (JSchException)e;
}
}
internal static void delPort(Session session, int rport)
{
lock (m_pool)
{
Object[] foo = null;
for (int i = 0; i < m_pool.Count; i++)
{
Object[] bar = (Object[])(m_pool[i]);
if (bar[0] != session)
continue;
if ((int)bar[1] != rport)
continue;
foo = bar;
break;
}
if (foo == null)
return;
m_pool.Remove(foo);
}
Buffer buf = new Buffer(100);
Packet packet = new Packet(buf);
try
{
packet.reset();
buf.putByte((byte)80 /*SSH_MSG_GLOBAL_REQUEST*/);
buf.putString("cancel-tcpip-forward");
buf.putByte((byte)0);
buf.putString("0.0.0.0");
buf.putInt(rport);
session.write(packet);
}
catch (Exception)
{ }
}
public override void Run()
{
m_thread = Thread.currentThread();
Buffer buf = new Buffer(m_rmpsize);
Packet packet = new Packet(buf);
int i = 0;
try
{
while (m_thread != null)
{
i = m_io.m_ins.Read(buf.m_buffer,
14,
buf.m_buffer.Length - 14 - 16 - 20 // padding and mac
);
if (i <= 0)
{
eof();
break;
}
if (m_close) break;
packet.reset();
buf.putByte((byte)Session.SSH_MSG_CHANNEL_DATA);
buf.putInt(m_recipient);
buf.putInt(i);
buf.skip(i);
m_session.write(packet, this, i);
}
}
catch { }
m_thread = null;
}
