Tamir.SharpSsh.jsch.Session.read C# (CSharp) Method

		public Buffer read(Buffer buf) 
		{
			int j = 0;
			while (true)
			{
				buf.Reset();
				io.getByte(buf.buffer, buf.index, cipher_size); buf.index+=cipher_size;

				if (s2ccipher!=null)
				{
					s2ccipher.update(buf.buffer, 0, cipher_size, buf.buffer, 0);
				}

//				j=((buf.buffer[0]<<24)&0xff000000)|
//					((buf.buffer[1]<<16)&0x00ff0000)|
//					((buf.buffer[2]<< 8)&0x0000ff00)|
//					((buf.buffer[3]    )&0x000000ff);
				j = Util.ToInt32(buf.buffer, 0);
				j = j - 4 - cipher_size + 8;
				if (j < 0 || (buf.index + j) > buf.buffer.Length)
				{
					throw new IOException("invalid data");
				}

				if (j > 0)
				{
					io.getByte(buf.buffer, buf.index, j); buf.index+=(j);
					if(s2ccipher!=null)
					{
						s2ccipher.update(buf.buffer, cipher_size, j, buf.buffer, cipher_size);
					}
				}

				if (s2cmac != null)
				{
					s2cmac.update(seqi);
					s2cmac.update(buf.buffer, 0, buf.index);
					byte[] result = s2cmac.doFinal();
					io.getByte(mac_buf, 0, mac_buf.Length);

					if (!result.SequenceEqual(mac_buf))
					{
						throw new IOException("MAC Error");
					}
				}
				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.buffer[5]&0xff;
				//System.Console.WriteLine("read: "+type);
				if(type==SSH_MSG_DISCONNECT)
				{
					buf.Rewind();
					buf.ReadInt();buf.ReadShort();
					int reason_code=buf.ReadInt();
					byte[] description=buf.ReadString();
					byte[] language_tag=buf.ReadString();
					/*
						System.Console.Error.WriteLine("SSH_MSG_DISCONNECT:"+
											   " "+reason_code+
								   " "+Encoding.UTF8.GetString(description)+
								   " "+Encoding.UTF8.GetString(language_tag));
					*/
					throw new JSchException(
						"SSH_MSG_DISCONNECT:"+
						" "+reason_code+
						" "+description+
						" "+language_tag);
					//break;
				}
				else if(type==SSH_MSG_IGNORE)
				{
				}
				else if(type==SSH_MSG_DEBUG)
				{
					buf.Rewind();
					buf.ReadInt();buf.ReadShort();
					/*
						byte always_display=(byte)buf.getByte();
						byte[] message=buf.getString();
						byte[] language_tag=buf.getString();
						System.Console.Error.WriteLine("SSH_MSG_DEBUG:"+
								   " "+Encoding.UTF8.GetString(message)+
								   " "+Encoding.UTF8.GetString(language_tag));
					*/
				}
				else if(type==SSH_MSG_CHANNEL_WINDOW_ADJUST)
				{
					buf.Rewind();
					buf.ReadInt();buf.ReadShort();
					Channel c=Channel.getChannel(buf.ReadInt(), this);
					if(c==null)
					{
					}
					else
					{
						c.addRemoteWindowSize(buf.ReadInt());
					}
				}
				else
				{
					break;
				}
			}
			buf.Rewind();
			return buf;
		}

		public virtual bool start(Session session)
		{
			Packet packet=session.packet;
			Buffer buf=session.buf;
			// send
			// byte      SSH_MSG_SERVICE_REQUEST(5)
			// string    service name "ssh-userauth"
			packet.reset();
			buf.putByte((byte)Session.SSH_MSG_SERVICE_REQUEST);
			buf.putString(Util.getBytes("ssh-userauth"));
			session.write(packet);

			// receive
			// byte      SSH_MSG_SERVICE_ACCEPT(6)
			// string    service name
			buf=session.read(buf);
			//System.out.println("read: 6 ? "+buf.buffer[5]);
			return buf.buffer[5]==6;
		}