From fdc3169942c1a9523eb0fca3e2742d14612ca57c Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Sun, 14 Oct 2007 03:36:34 +0000
Subject: Beginings of a Telnet Protocol handler, I finally solved the general
 Option negotiation issues that plagued the earlier version, now I just have
 to actually process data.

---
 src/protocoltelnet.h | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 src/protocoltelnet.h

(limited to 'src/protocoltelnet.h')

diff --git a/src/protocoltelnet.h b/src/protocoltelnet.h
new file mode 100644
index 0000000..3a606b5
--- /dev/null
+++ b/src/protocoltelnet.h
@@ -0,0 +1,90 @@
+#ifndef BU_PROTOCOL_TELNET_H
+#define BU_PROTOCOL_TELNET_H
+
+#include "bu/protocol.h"
+#include "bu/hash.h"
+
+namespace Bu
+{
+	class ProtocolTelnet : public Protocol
+	{
+	public:
+		ProtocolTelnet();
+		virtual ~ProtocolTelnet();
+
+		virtual void onNewConnection( class Bu::Client *pClient );
+		virtual void onNewData( class Bu::Client *pClient );
+
+		enum OptMode
+		{
+			optOff,
+			optOn,
+			optDesire,
+			optRefuse
+		};
+
+		OptMode getLocalOptBinary();
+		void setLocalOptBinary( OptMode eMode );
+		OptMode getRemoteOptBinary();
+		void setRemoteOptBinary( OptMode eMode );
+
+		OptMode getLocalOptEcho();
+		void setLocalOptEcho( OptMode eMode );
+		OptMode getRemoteOptEcho();
+		void setRemoteOptEcho( OptMode eMode );
+
+	private:
+		/**
+		 * Represents a basic telnet option, either on or off, no parameters.
+		 * Each Option can negotiate effectively on it's own, and has two
+		 * parameters in each of two classes.  Both local and remote can be
+		 * enabled/disabled and set/unset.  Enabled represents the ability to
+		 * set the option, disabling an option should also unset it.  Set or
+		 * unset represent wether the option is being used, if it is allowed.
+		 */
+		class Option
+		{
+			friend class Bu::ProtocolTelnet;
+		private:
+			Option( ProtocolTelnet &rPT, char cCode );
+			virtual ~Option();
+
+		public:
+			void localEnable( bool bSet=true );
+			void localSet( bool bSet=true );
+			
+			bool isLocalEnabled();
+			bool isLocalSet();
+			
+			void remoteEnable( bool bSet=true );
+			void remoteSet( bool bSet=true );
+
+			bool isRemoteEnabled();
+			bool isRemoteSet();
+
+		private:
+			enum
+			{
+				fLocalCant	= 0x01,	/**< Local can't/won't allow option. */
+				fLocalIs	= 0x02, /**< Local is using option. */
+				fRemoteCant	= 0x04, /**< Remote can't/won't allow option. */
+				fRemoteIs	= 0x08	/**< Remote is using option. */
+			};
+
+			ProtocolTelnet &rPT;
+			char fOpts;
+			char cCode;
+		};
+
+		Hash<char, Option *> hOpts;
+
+		Option oBinary;
+		Option oEcho;
+
+		Client *pClient;
+
+	friend class Bu::ProtocolTelnet::Option;
+	};
+}
+
+#endif
-- 
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