/// <exception cref="NSch.JSchException"></exception>
public virtual void Connect(int connectTimeout)
{
if (isConnected)
{
throw new JSchException("session is already connected");
}
io = new IO();
if (random == null)
{
try
{
Type c = Sharpen.Runtime.GetType(GetConfig("random"));
random = (Random)(System.Activator.CreateInstance(c));
}
catch (Exception e)
{
throw new JSchException(e.ToString(), e);
}
}
Packet.SetRandom(random);
if (JSch.GetLogger().IsEnabled(Logger.INFO))
{
JSch.GetLogger().Log(Logger.INFO, "Connecting to " + host + " port " + port);
}
try
{
int i;
int j;
if (proxy == null)
{
InputStream @in;
OutputStream @out;
if (socket_factory == null)
{
socket = Util.CreateSocket(host, port, connectTimeout);
@in = socket.GetInputStream();
@out = socket.GetOutputStream();
}
else
{
socket = socket_factory.CreateSocket(host, port);
@in = socket_factory.GetInputStream(socket);
@out = socket_factory.GetOutputStream(socket);
}
//if(timeout>0){ socket.setSoTimeout(timeout); }
socket.NoDelay = true;
io.SetInputStream(@in);
io.SetOutputStream(@out);
}
else
{
lock (proxy)
{
proxy.Connect(socket_factory, host, port, connectTimeout);
io.SetInputStream(proxy.GetInputStream());
io.SetOutputStream(proxy.GetOutputStream());
socket = proxy.GetSocket();
}
}
if (connectTimeout > 0 && socket != null)
{
socket.ReceiveTimeout = connectTimeout;
}
isConnected = true;
if (JSch.GetLogger().IsEnabled(Logger.INFO))
{
JSch.GetLogger().Log(Logger.INFO, "Connection established");
}
jsch.AddSession(this);
{
// Some Cisco devices will miss to read '\n' if it is sent separately.
byte[] foo = new byte[V_C.Length + 1];
System.Array.Copy(V_C, 0, foo, 0, V_C.Length);
foo[foo.Length - 1] = unchecked((byte)(byte)('\n'));
io.Put(foo, 0, foo.Length);
}
while (true)
{
i = 0;
j = 0;
while (i < buf.buffer.Length)
{
j = io.GetByte();
if (j < 0)
{
break;
}
buf.buffer[i] = unchecked((byte)j);
i++;
if (j == 10)
{
break;
}
}
if (j < 0)
{
throw new JSchException("connection is closed by foreign host");
}
if (buf.buffer[i - 1] == 10)
{
// 0x0a
i--;
if (i > 0 && buf.buffer[i - 1] == 13)
{
// 0x0d
i--;
}
}
if (i <= 3 || ((i != buf.buffer.Length) && (buf.buffer[0] != 'S' || buf.buffer[1]
!= 'S' || buf.buffer[2] != 'H' || buf.buffer[3] != '-')))
{
// It must not start with 'SSH-'
//System.err.println(new String(buf.buffer, 0, i);
continue;
}
if (i == buf.buffer.Length || i < 7 || (buf.buffer[4] == '1' && buf.buffer[6] !=
'9'))
{
// SSH-1.99 or SSH-2.0
// SSH-1.5
throw new JSchException("invalid server's version string");
}
break;
}
V_S = new byte[i];
System.Array.Copy(buf.buffer, 0, V_S, 0, i);
//System.err.println("V_S: ("+i+") ["+new String(V_S)+"]");
if (JSch.GetLogger().IsEnabled(Logger.INFO))
{
JSch.GetLogger().Log(Logger.INFO, "Remote version string: " + Util.Byte2str(V_S));
JSch.GetLogger().Log(Logger.INFO, "Local version string: " + Util.Byte2str(V_C));
}
Send_kexinit();
buf = Read(buf);
if (buf.GetCommand() != SSH_MSG_KEXINIT)
{
in_kex = false;
throw new JSchException("invalid protocol: " + buf.GetCommand());
}
if (JSch.GetLogger().IsEnabled(Logger.INFO))
{
JSch.GetLogger().Log(Logger.INFO, "SSH_MSG_KEXINIT received");
}
KeyExchange kex = Receive_kexinit(buf);
while (true)
{
buf = Read(buf);
if (kex.GetState() == buf.GetCommand())
{
kex_start_time = Runtime.CurrentTimeMillis();
bool result = kex.Next(buf);
if (!result)
{
//System.err.println("verify: "+result);
in_kex = false;
throw new JSchException("verify: " + result);
}
}
else
{
in_kex = false;
throw new JSchException("invalid protocol(kex): " + buf.GetCommand());
}
if (kex.GetState() == KeyExchange.STATE_END)
{
break;
}
}
try
{
CheckHost(host, port, kex);
}
catch (JSchException ee)
{
in_kex = false;
throw;
}
Send_newkeys();
// receive SSH_MSG_NEWKEYS(21)
buf = Read(buf);
//System.err.println("read: 21 ? "+buf.getCommand());
if (buf.GetCommand() == SSH_MSG_NEWKEYS)
{
if (JSch.GetLogger().IsEnabled(Logger.INFO))
{
JSch.GetLogger().Log(Logger.INFO, "SSH_MSG_NEWKEYS received");
}
Receive_newkeys(buf, kex);
}
else
{
in_kex = false;
throw new JSchException("invalid protocol(newkyes): " + buf.GetCommand());
}
bool auth = false;
bool auth_cancel = false;
UserAuth ua = null;
try
{
Type c = Sharpen.Runtime.GetType(GetConfig("userauth.none"));
ua = (UserAuth)(System.Activator.CreateInstance(c));
}
catch (Exception e)
{
throw new JSchException(e.ToString(), e);
}
auth = ua.Start(this);
string cmethods = GetConfig("PreferredAuthentications");
string[] cmethoda = Util.Split(cmethods, ",");
string smethods = null;
if (!auth)
{
smethods = ((UserAuthNone)ua).GetMethods();
if (smethods != null)
{
smethods = smethods.ToLower();
}
else
{
// methods: publickey,password,keyboard-interactive
//smethods="publickey,password,keyboard-interactive";
smethods = cmethods;
}
}
string[] smethoda = Util.Split(smethods, ",");
int methodi = 0;
while (true)
{
//System.err.println("methods: "+methods);
while (!auth && cmethoda != null && methodi < cmethoda.Length)
{
string method = cmethoda[methodi++];
bool acceptable = false;
for (int k = 0; k < smethoda.Length; k++)
{
if (smethoda[k].Equals(method))
{
acceptable = true;
break;
}
}
if (!acceptable)
{
continue;
}
//System.err.println(" method: "+method);
if (JSch.GetLogger().IsEnabled(Logger.INFO))
{
string str = "Authentications that can continue: ";
for (int k_1 = methodi - 1; k_1 < cmethoda.Length; k_1++)
{
str += cmethoda[k_1];
if (k_1 + 1 < cmethoda.Length)
{
str += ",";
}
}
JSch.GetLogger().Log(Logger.INFO, str);
JSch.GetLogger().Log(Logger.INFO, "Next authentication method: " + method);
}
ua = null;
try
{
Type c = null;
if (GetConfig("userauth." + method) != null)
{
c = Sharpen.Runtime.GetType(GetConfig("userauth." + method));
ua = (UserAuth)(System.Activator.CreateInstance(c));
}
}
catch (Exception)
{
if (JSch.GetLogger().IsEnabled(Logger.WARN))
{
JSch.GetLogger().Log(Logger.WARN, "failed to load " + method + " method");
}
}
if (ua != null)
{
auth_cancel = false;
try
{
auth = ua.Start(this);
if (auth && JSch.GetLogger().IsEnabled(Logger.INFO))
{
JSch.GetLogger().Log(Logger.INFO, "Authentication succeeded (" + method + ").");
}
}
catch (JSchAuthCancelException)
{
auth_cancel = true;
}
catch (JSchPartialAuthException ee)
{
string tmp = smethods;
smethods = ee.GetMethods();
smethoda = Util.Split(smethods, ",");
if (!tmp.Equals(smethods))
{
methodi = 0;
}
//System.err.println("PartialAuth: "+methods);
auth_cancel = false;
goto loop_continue;
}
catch (RuntimeException ee)
{
throw;
}
catch (Exception)
{
//System.err.println("ee: "+ee); // SSH_MSG_DISCONNECT: 2 Too many authentication failures
goto loop_break;
}
}
}
break;
loop_continue: ;
}
loop_break: ;
if (!auth)
{
if (auth_cancel)
{
throw new JSchException("Auth cancel");
}
throw new JSchException("Auth fail");
}
if (connectTimeout > 0 || timeout > 0)
{
socket.ReceiveTimeout = timeout;
}
isAuthed = true;
lock (Lock)
{
if (isConnected)
{
connectThread = new Sharpen.Thread(this);
connectThread.SetName("Connect thread " + host + " session");
if (daemon_thread)
{
connectThread.SetDaemon(daemon_thread);
}
connectThread.Start();
}
}
}
catch (Exception e)
{
// The session has been already down and
// we don't have to start new thread.
in_kex = false;
if (isConnected)
{
try
{
packet.Reset();
buf.PutByte(unchecked((byte)SSH_MSG_DISCONNECT));
buf.PutInt(3);
buf.PutString(Util.Str2byte(e.ToString()));
buf.PutString(Util.Str2byte("en"));
Write(packet);
Disconnect();
}
catch (Exception)
{
}
}
isConnected = false;
//e.printStackTrace();
if (e is RuntimeException)
{
throw (RuntimeException)e;
}
if (e is JSchException)
{
throw (JSchException)e;
}
throw new JSchException("Session.connect: " + e);
}
finally
{
Util.Bzero(this.password);
this.password = null;
}
}
/// <exception cref="System.Exception"></exception>
public virtual Buffer Read(Buffer buf)
{
int j = 0;
while (true)
{
buf.Reset();
io.GetByte(buf.buffer, buf.index, s2ccipher_size);
buf.index += s2ccipher_size;
if (s2ccipher != null)
{
s2ccipher.Update(buf.buffer, 0, s2ccipher_size, buf.buffer, 0);
}
j = ((buf.buffer[0] << 24) & unchecked((int)(0xff000000))) | ((buf.buffer[1] << 16
) & unchecked((int)(0x00ff0000))) | ((buf.buffer[2] << 8) & unchecked((int)(0x0000ff00
))) | ((buf.buffer[3]) & unchecked((int)(0x000000ff)));
// RFC 4253 6.1. Maximum Packet Length
if (j < 5 || j > PACKET_MAX_SIZE)
{
Start_discard(buf, s2ccipher, s2cmac, j, PACKET_MAX_SIZE);
}
int need = j + 4 - s2ccipher_size;
//if(need<0){
// throw new IOException("invalid data");
//}
if ((buf.index + need) > buf.buffer.Length)
{
byte[] foo = new byte[buf.index + need];
System.Array.Copy(buf.buffer, 0, foo, 0, buf.index);
buf.buffer = foo;
}
if ((need % s2ccipher_size) != 0)
{
string message = "Bad packet length " + need;
if (JSch.GetLogger().IsEnabled(Logger.FATAL))
{
JSch.GetLogger().Log(Logger.FATAL, message);
}
Start_discard(buf, s2ccipher, s2cmac, j, PACKET_MAX_SIZE - s2ccipher_size);
}
if (need > 0)
{
io.GetByte(buf.buffer, buf.index, need);
buf.index += (need);
if (s2ccipher != null)
{
s2ccipher.Update(buf.buffer, s2ccipher_size, need, buf.buffer, s2ccipher_size);
}
}
if (s2cmac != null)
{
s2cmac.Update(seqi);
s2cmac.Update(buf.buffer, 0, buf.index);
s2cmac.DoFinal(s2cmac_result1, 0);
io.GetByte(s2cmac_result2, 0, s2cmac_result2.Length);
if (!Arrays.Equals(s2cmac_result1, s2cmac_result2))
{
if (need > PACKET_MAX_SIZE)
{
throw new IOException("MAC Error");
}
Start_discard(buf, s2ccipher, s2cmac, j, PACKET_MAX_SIZE - need);
continue;
}
}
seqi++;
if (inflater != null)
{
//inflater.uncompress(buf);
int pad = buf.buffer[4];
uncompress_len[0] = buf.index - 5 - pad;
byte[] foo = inflater.Uncompress(buf.buffer, 5, uncompress_len);
if (foo != null)
{
buf.buffer = foo;
buf.index = 5 + uncompress_len[0];
}
else
{
System.Console.Error.WriteLine("fail in inflater");
break;
}
}
int type = buf.GetCommand() & unchecked((int)(0xff));
//System.err.println("read: "+type);
if (type == SSH_MSG_DISCONNECT)
{
buf.Rewind();
buf.GetInt();
buf.GetShort();
int reason_code = buf.GetInt();
byte[] description = buf.GetString();
byte[] language_tag = buf.GetString();
throw new JSchException("SSH_MSG_DISCONNECT: " + reason_code + " " + Util.Byte2str
(description) + " " + Util.Byte2str(language_tag));
}
else
{
//break;
if (type == SSH_MSG_IGNORE)
{
}
else
{
if (type == SSH_MSG_UNIMPLEMENTED)
{
buf.Rewind();
buf.GetInt();
buf.GetShort();
int reason_id = buf.GetInt();
if (JSch.GetLogger().IsEnabled(Logger.INFO))
{
JSch.GetLogger().Log(Logger.INFO, "Received SSH_MSG_UNIMPLEMENTED for " + reason_id
);
}
}
else
{
if (type == SSH_MSG_DEBUG)
{
buf.Rewind();
buf.GetInt();
buf.GetShort();
}
else
{
if (type == SSH_MSG_CHANNEL_WINDOW_ADJUST)
{
buf.Rewind();
buf.GetInt();
buf.GetShort();
Channel c = Channel.GetChannel(buf.GetInt(), this);
if (c == null)
{
}
else
{
c.AddRemoteWindowSize(buf.GetInt());
}
}
else
{
if (type == UserAuth.SSH_MSG_USERAUTH_SUCCESS)
{
isAuthed = true;
if (inflater == null && deflater == null)
{
string method;
method = guess[KeyExchange.PROPOSAL_COMP_ALGS_CTOS];
InitDeflater(method);
method = guess[KeyExchange.PROPOSAL_COMP_ALGS_STOC];
InitInflater(method);
}
break;
}
else
{
break;
}
}
}
}
}
}
}
buf.Rewind();
return buf;
}
public virtual void Run()
{
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;
int stimeout = 0;
try
{
while (isConnected && thread != null)
{
try
{
buf = Read(buf);
stimeout = 0;
}
catch (ThreadInterruptedException ee)
{
if (!in_kex && stimeout < serverAliveCountMax)
{
SendKeepAliveMsg();
stimeout++;
continue;
}
throw;
}
int msgType = buf.GetCommand() & unchecked((int)(0xff));
if (kex != null && kex.GetState() == msgType)
{
kex_start_time = Runtime.CurrentTimeMillis();
bool result = kex.Next(buf);
if (!result)
{
throw new JSchException("verify: " + result);
}
continue;
}
switch (msgType)
{
case SSH_MSG_KEXINIT:
{
//System.err.println("KEXINIT");
kex = Receive_kexinit(buf);
break;
}
case SSH_MSG_NEWKEYS:
{
//System.err.println("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.GetChannel(i, this);
foo = buf.GetString(start, length);
if (channel == null)
{
break;
}
if (length[0] == 0)
{
break;
}
try
{
channel.Write(foo, start[0], length[0]);
}
catch (Exception)
{
//System.err.println(e);
try
{
channel.Disconnect();
}
catch (Exception)
{
}
break;
}
int len = length[0];
channel.SetLocalWindowSize(channel.lwsize - len);
if (channel.lwsize < channel.lwsize_max / 2)
{
packet.Reset();
buf.PutByte(unchecked((byte)SSH_MSG_CHANNEL_WINDOW_ADJUST));
buf.PutInt(channel.GetRecipient());
buf.PutInt(channel.lwsize_max - channel.lwsize);
Write(packet);
channel.SetLocalWindowSize(channel.lwsize_max);
}
break;
}
case SSH_MSG_CHANNEL_EXTENDED_DATA:
{
buf.GetInt();
buf.GetShort();
i = buf.GetInt();
channel = Channel.GetChannel(i, this);
buf.GetInt();
// data_type_code == 1
foo = buf.GetString(start, length);
//System.err.println("stderr: "+new String(foo,start[0],length[0]));
if (channel == null)
{
break;
}
if (length[0] == 0)
{
break;
}
channel.Write_ext(foo, start[0], length[0]);
int len = length[0];
channel.SetLocalWindowSize(channel.lwsize - len);
if (channel.lwsize < channel.lwsize_max / 2)
{
packet.Reset();
buf.PutByte(unchecked((byte)SSH_MSG_CHANNEL_WINDOW_ADJUST));
buf.PutInt(channel.GetRecipient());
buf.PutInt(channel.lwsize_max - channel.lwsize);
Write(packet);
channel.SetLocalWindowSize(channel.lwsize_max);
}
break;
}
case SSH_MSG_CHANNEL_WINDOW_ADJUST:
{
buf.GetInt();
buf.GetShort();
i = buf.GetInt();
channel = Channel.GetChannel(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.GetChannel(i, this);
if (channel != null)
{
//channel.eof_remote=true;
//channel.eof();
channel.Eof_remote();
}
break;
}
case SSH_MSG_CHANNEL_CLOSE:
{
buf.GetInt();
buf.GetShort();
i = buf.GetInt();
channel = Channel.GetChannel(i, this);
if (channel != null)
{
// channel.close();
channel.Disconnect();
}
break;
}
case SSH_MSG_CHANNEL_OPEN_CONFIRMATION:
{
buf.GetInt();
buf.GetShort();
i = buf.GetInt();
channel = Channel.GetChannel(i, this);
if (channel == null)
{
}
//break;
int r = buf.GetInt();
long rws = buf.GetUInt();
int rps = buf.GetInt();
channel.SetRemoteWindowSize(rws);
channel.SetRemotePacketSize(rps);
channel.SetRecipient(r);
break;
}
case SSH_MSG_CHANNEL_OPEN_FAILURE:
{
buf.GetInt();
buf.GetShort();
i = buf.GetInt();
channel = Channel.GetChannel(i, this);
if (channel == null)
{
}
//break;
int reason_code = buf.GetInt();
//foo=buf.getString(); // additional textual information
//foo=buf.getString(); // language tag
channel.exitstatus = reason_code;
channel.close = true;
channel.eof_remote = true;
channel.SetRecipient(0);
break;
}
case SSH_MSG_CHANNEL_REQUEST:
{
buf.GetInt();
buf.GetShort();
i = buf.GetInt();
foo = buf.GetString();
bool reply = (buf.GetByte() != 0);
channel = Channel.GetChannel(i, this);
if (channel != null)
{
byte reply_type = unchecked((byte)SSH_MSG_CHANNEL_FAILURE);
if ((Util.Byte2str(foo)).Equals("exit-status"))
{
i = buf.GetInt();
// exit-status
channel.SetExitStatus(i);
reply_type = unchecked((byte)SSH_MSG_CHANNEL_SUCCESS);
}
if (reply)
{
packet.Reset();
buf.PutByte(reply_type);
buf.PutInt(channel.GetRecipient());
Write(packet);
}
}
break;
}
case SSH_MSG_CHANNEL_OPEN:
{
buf.GetInt();
buf.GetShort();
foo = buf.GetString();
string ctyp = Util.Byte2str(foo);
if (!"forwarded-tcpip".Equals(ctyp) && !("x11".Equals(ctyp) && x11_forwarding) &&
!("*****@*****.**".Equals(ctyp) && agent_forwarding))
{
//System.err.println("Session.run: CHANNEL OPEN "+ctyp);
//throw new IOException("Session.run: CHANNEL OPEN "+ctyp);
packet.Reset();
buf.PutByte(unchecked((byte)SSH_MSG_CHANNEL_OPEN_FAILURE));
buf.PutInt(buf.GetInt());
buf.PutInt(Channel.SSH_OPEN_ADMINISTRATIVELY_PROHIBITED);
buf.PutString(Util.empty);
buf.PutString(Util.empty);
Write(packet);
}
else
{
channel = Channel.GetChannel(ctyp);
AddChannel(channel);
channel.GetData(buf);
channel.Init();
Sharpen.Thread tmp = new Sharpen.Thread(channel);
tmp.SetName("Channel " + ctyp + " " + host);
if (daemon_thread)
{
tmp.SetDaemon(daemon_thread);
}
tmp.Start();
break;
}
goto case SSH_MSG_CHANNEL_SUCCESS;
}
case SSH_MSG_CHANNEL_SUCCESS:
{
buf.GetInt();
buf.GetShort();
i = buf.GetInt();
channel = Channel.GetChannel(i, this);
if (channel == null)
{
break;
}
channel.reply = 1;
break;
}
case SSH_MSG_CHANNEL_FAILURE:
{
buf.GetInt();
buf.GetShort();
i = buf.GetInt();
channel = Channel.GetChannel(i, this);
if (channel == null)
{
break;
}
channel.reply = 0;
break;
}
case SSH_MSG_GLOBAL_REQUEST:
{
buf.GetInt();
buf.GetShort();
foo = buf.GetString();
// request name
bool reply = (buf.GetByte() != 0);
if (reply)
{
packet.Reset();
buf.PutByte(unchecked((byte)SSH_MSG_REQUEST_FAILURE));
Write(packet);
}
break;
}
case SSH_MSG_REQUEST_FAILURE:
case SSH_MSG_REQUEST_SUCCESS:
{
Sharpen.Thread t = grr.GetThread();
if (t != null)
{
grr.SetReply(msgType == SSH_MSG_REQUEST_SUCCESS ? 1 : 0);
t.Interrupt();
}
break;
}
default:
{
//System.err.println("Session.run: unsupported type "+msgType);
throw new IOException("Unknown SSH message type " + msgType);
}
}
}
}
catch (Exception e)
{
in_kex = false;
if (JSch.GetLogger().IsEnabled(Logger.INFO))
{
JSch.GetLogger().Log(Logger.INFO, "Caught an exception, leaving main loop due to "
+ e.Message);
}
}
//System.err.println("# Session.run");
//e.printStackTrace();
try
{
Disconnect();
}
catch (ArgumentNullException)
{
}
catch (Exception)
{
}
//System.err.println("@1");
//e.printStackTrace();
//System.err.println("@2");
//e.printStackTrace();
isConnected = false;
}
