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.cpp | 131 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 src/protocoltelnet.cpp

(limited to 'src/protocoltelnet.cpp')

diff --git a/src/protocoltelnet.cpp b/src/protocoltelnet.cpp
new file mode 100644
index 0000000..b0209db
--- /dev/null
+++ b/src/protocoltelnet.cpp
@@ -0,0 +1,131 @@
+#include "bu/protocoltelnet.h"
+#include "bu/client.h"
+
+#define CODE_SE		'\xf0'	/**< End of subnegotiation params. */
+#define CODE_NOP	'\xf1'	/**< No operation (keep-alive). */
+#define CODE_DM		'\xf2'	/**< Datastream side of a Synch. */
+#define CODE_BRK	'\xf3'	/**< Break character. */
+#define CODE_IP		'\xf4' /**< Interrupt Process character. */
+#define CODE_AO		'\xf5' /**< Abort Output character. */
+#define CODE_AYT	'\xf6' /**< Are You There? character. */
+#define CODE_EC		'\xf7' /**< Erase Character character. */
+#define CODE_EL		'\xf8'	/**< Erase Line character. */
+#define CODE_GA		'\xf9' /**< Go Ahead signal. */
+#define CODE_SB		'\xfa'	/**< Begin subnegotiation options. */
+#define CODE_WILL	'\xfb'	/**< Desire to do something. */
+#define CODE_WONT	'\xfc'	/**< Refuse to perform. */
+#define CODE_DO		'\xfd'	/**< Request option. */
+#define CODE_DONT	'\xfe'	/**< Demand a stop. */
+
+#define CODE_IAC	'\xff'	/**< Interpret-As-Command. */
+
+#define OPT_BINARY	'\x00'	/**< Binary mode (file transfers?). */
+#define OPT_ECHO	'\x01'	/**< (local) Echo mode. */
+
+Bu::ProtocolTelnet::ProtocolTelnet() :
+	oBinary(	*this, OPT_BINARY ),
+	oEcho(		*this, OPT_ECHO )
+{
+}
+
+Bu::ProtocolTelnet::~ProtocolTelnet()
+{
+}
+
+void Bu::ProtocolTelnet::onNewConnection( Bu::Client *pClient )
+{
+}
+
+void Bu::ProtocolTelnet::onNewData( Bu::Client *pClient )
+{
+}
+
+
+
+Bu::ProtocolTelnet::Option::Option( Bu::ProtocolTelnet &rPT, char cCode ) :
+	rPT( rPT ),
+	fOpts( 0 ),
+	cCode( cCode )
+{
+	rPT.hOpts.insert( cCode, this );
+}
+
+Bu::ProtocolTelnet::Option::~Option()
+{
+}
+
+void Bu::ProtocolTelnet::Option::localEnable( bool bSet )
+{
+	if( bSet == (bool)(!(fOpts&fLocalCant)) ) return;
+
+	if( bSet )
+		fOpts &= ~fLocalCant;
+	else
+		fOpts |= fLocalCant;
+}
+
+void Bu::ProtocolTelnet::Option::localSet( bool bSet )
+{
+	if( bSet == (bool)(fOpts&fLocalIs) ) return;
+
+	char buf[2];
+
+	if( bSet )
+	{
+		buf[0] = CODE_WILL;
+		buf[1] = cCode;
+		rPT.pClient->write( buf, 2 );
+	}
+	else
+	{
+		buf[0] = CODE_WONT;
+		buf[1] = cCode;
+		rPT.pClient->write( buf, 2 );
+	}
+}
+
+bool Bu::ProtocolTelnet::Option::isLocalEnabled()
+{
+	return (bool)(!(fOpts&fLocalCant));
+}
+
+bool Bu::ProtocolTelnet::Option::isLocalSet()
+{
+	return (bool)(fOpts&fLocalIs);
+}
+
+void Bu::ProtocolTelnet::Option::remoteEnable( bool bSet )
+{
+	return;
+}
+
+void Bu::ProtocolTelnet::Option::remoteSet( bool bSet )
+{
+	if( bSet == (bool)(fOpts&fRemoteIs) ) return;
+
+	char buf[2];
+
+	if( bSet )
+	{
+		buf[0] = CODE_DO;
+		buf[1] = cCode;
+		rPT.pClient->write( buf, 2 );
+	}
+	else
+	{
+		buf[0] = CODE_DONT;
+		buf[1] = cCode;
+		rPT.pClient->write( buf, 2 );
+	}
+}
+
+bool Bu::ProtocolTelnet::Option::isRemoteEnabled()
+{
+	return (bool)(!(fOpts&fRemoteCant));
+}
+
+bool Bu::ProtocolTelnet::Option::isRemoteSet()
+{
+	return (bool)(fOpts&fRemoteIs);
+}
+
-- 
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