--- sbbs/sbbs3/telnet.h	2018/04/24 16:39:34	1.1.1.1
+++ sbbs/sbbs3/telnet.h	2018/04/24 16:39:50	1.1.1.2
@@ -2,13 +2,13 @@
 
 /* Synchronet telnet-related constants and function prototypes */
 
-/* $Id: telnet.h,v 1.1.1.1 2018/04/24 16:39:34 root Exp $ */
+/* $Id: telnet.h,v 1.1.1.2 2018/04/24 16:39:50 root Exp $ */
 
 /****************************************************************************
  * @format.tab-size 4		(Plain Text/Source Code File Header)			*
  * @format.use-tabs true	(see http://www.synchro.net/ptsc_hdr.html)		*
  *																			*
- * Copyright 2000 Rob Swindell - http://www.synchro.net/copyright.html		*
+ * Copyright 2004 Rob Swindell - http://www.synchro.net/copyright.html		*
  *																			*
  * This program is free software; you can redistribute it and/or			*
  * modify it under the terms of the GNU General Public License				*
@@ -35,41 +35,46 @@
  * Note: If this box doesn't appear square, then you need to fix your tabs.	*
  ****************************************************************************/
 
+#ifndef _TELNET_H
+#define _TELNET_H
+
+#include "gen_defs.h"	/* uchar */
+
 /* commands */
 
-#define TELNET_IAC		255	// Interpret as command
-#define TELNET_DONT		254 // Don't do option
-#define TELNET_DO   	253 // Do option
-#define TELNET_WONT 	252 // Won't do option
-#define TELNET_WILL 	251 // Will do option
-
-#define TELNET_SB       250	// sub-negotiation
-#define TELNET_GA		249	// Go ahead
-#define TELNET_EL		248 // Erase line
-#define TELNET_EC		247 // Erase char
-#define TELNET_AYT		246 // Are you there?
-#define TELNET_AO		245 // Abort output
-#define TELNET_IP		244 // Interrupt process
-#define TELNET_BRK		243 // Break
-#define TELNET_SYNC		242 // Data mark
-#define TELNET_NOP		241 // No operation
+#define TELNET_IAC		255	/* 0xff - Interpret as command */
+#define TELNET_DONT		254 /* 0xfe - Don't do option */
+#define TELNET_DO   	253 /* 0xfd - Do option */
+#define TELNET_WONT 	252 /* 0xfc - Won't do option */
+#define TELNET_WILL 	251 /* 0xfb - Will do option */
+
+#define TELNET_SB       250	/* sub-negotiation */
+#define TELNET_GA		249	/* Go ahead */
+#define TELNET_EL		248 /* Erase line */
+#define TELNET_EC		247 /* Erase char */
+#define TELNET_AYT		246 /* Are you there? */
+#define TELNET_AO		245 /* Abort output */
+#define TELNET_IP		244 /* Interrupt process */
+#define TELNET_BRK		243 /* Break */
+#define TELNET_SYNC		242 /* Data mark */
+#define TELNET_NOP		241 /* No operation */
 
-#define TELNET_SE       240 //  End of subnegotiation parameters.
+#define TELNET_SE       240 /*  End of subnegotiation parameters. */
 
 /* options */
 
 enum {
- 	 TELNET_BINARY
+ 	 TELNET_BINARY_TX
 	,TELNET_ECHO
 	,TELNET_RECONN
-	,TELNET_SUP_GA		// supress go ahead
+	,TELNET_SUP_GA		/* suppress go ahead */
 	,TELNET_APPROX_MSG_SIZE
 	,TELNET_STATUS
 	,TELNET_TIMING_MARK
 	,TELNET_REMOTE_CTRL
 	,TELNET_OUTPUT_LINE_WIDTH
 	,TELNET_OUTPUT_PAGE_SIZE
-	,TELNET_OUTPUT_CR_DISP
+	,TELNET_OUTPUT_CR_DISP		/* 10 */
 	,TELNET_OUTPUT_HTAB_STOPS
 	,TELNET_OUTPUT_HTAB_DISP
 	,TELNET_OUTPUT_FF_DISP
@@ -79,7 +84,7 @@ enum {
 	,TELNET_EXASCII
 	,TELNET_LOGOUT
 	,TELNET_BYTE_MACRO
-	,TELNET_DATA_ENTRY_TERM
+	,TELNET_DATA_ENTRY_TERM		/* 20 */
 	,TELNET_SUPDUP
 	,TELNET_SUPDUP_OUTPUT
 	,TELNET_SEND_LOCATION
@@ -89,7 +94,7 @@ enum {
 	,TELNET_OUTPUT_MARKING
 	,TELNET_TERM_LOCATION_NUMBER
 	,TELNET_3270
-	,TELNET_X3_PAD
+	,TELNET_X3_PAD				/* 30 */
 	,TELNET_NEGOTIATE_WINDOW_SIZE
 	,TELNET_TERM_SPEED
 	,TELNET_REMOTE_FLOW
@@ -98,23 +103,56 @@ enum {
 	,TELNET_ENV_OPTION
 	,TELNET_AUTH_OPTION
 	,TELNET_ENCRYPTION_OPTION
-	,TELNET_NEW_ENV_OPTION
-	,TELNET_3270E
+	,TELNET_NEW_ENV_OPTION		
+	,TELNET_3270E				/* 40 */
 
-	,TELNET_EXOPL=255	// Extended options list
+	,TELNET_EXOPL=255	/* Extended options list */
 };
 
+/* Terminal-type sub option codes, see RFC 1091 */
+#define TELNET_TERM_IS		0
+#define TELNET_TERM_SEND	1
+#define TELNET_TERM_MAXLEN	40
+
 /* bits for telnet_mode */   
    
-#define TELNET_MODE_BIN_RX	(1<<0)   
-#define TELNET_MODE_ECHO	(1<<1)   
-#define TELNET_MODE_GATE	(1<<2)	// Pass-through telnet commands/responses
+#define TELNET_MODE_GATE	(1<<2)	/* Pass-through telnet commands/responses */
+#define TELNET_MODE_OFF		(1<<3)	/* This is not a Telnet connection */
+
+#ifdef DLLEXPORT
+#undef DLLEXPORT
+#endif
+#ifdef DLLCALL
+#undef DLLCALL
+#endif
+
+#ifdef _WIN32
+	#ifdef SBBS_EXPORTS
+		#define DLLEXPORT __declspec(dllexport)
+	#else
+		#define DLLEXPORT __declspec(dllimport)
+	#endif
+	#ifdef __BORLANDC__
+		#define DLLCALL __stdcall
+	#else
+		#define DLLCALL
+	#endif
+#else
+	#define DLLEXPORT
+	#define DLLCALL
+#endif
 
 #ifdef __cplusplus  
 extern "C" {   
 #endif   
-const char *telnet_cmd_desc(uchar cmd);   
-const char *telnet_opt_desc(uchar opt);
+
+DLLEXPORT const char* DLLCALL telnet_cmd_desc(uchar cmd);   
+DLLEXPORT const char* DLLCALL telnet_opt_desc(uchar opt);
+DLLEXPORT const uchar DLLCALL telnet_opt_ack(uchar cmd);
+DLLEXPORT const uchar DLLCALL telnet_opt_nak(uchar cmd);
+
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
+
+#endif /* don't add anything after this line */