/*
 * Copyright 1996, 1999, 2000 by Paul Mattes.
 *  Permission to use, copy, modify, and distribute this software and its
 *  documentation for any purpose and without fee is hereby granted,
 *  provided that the above copyright notice appear in all copies and that
 *  both that copyright notice and this permission notice appear in
 *  supporting documentation.
 *
 * x3270, c3270, s3270 and tcl3270 are distributed in the hope that they will
 * be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the file LICENSE
 * for more details.
 */

/* Data Stream definitions for CUT-style file transfers. */

/* Primary Area */
#define O_FRAME_TYPE		0	/* offset to frame type */
#define  FT_CONTROL_CODE	0xc3	/*  frame type: control code (host->) */
#define   O_CC_FRAME_SEQ	1	/*   offset to frame sequence */
#define   O_CC_STATUS_CODE	2	/*   offset to status code */
#define    SC_HOST_ACK		0x8181	/*    ack of IND$FILE command */
#define    SC_XFER_COMPLETE	0x8189	/*    file transfer complete */
#define    SC_ABORT_FILE	0x8194	/*    abort, file error */
#define    SC_ABORT_XMIT	0x8198	/*    abort, transmission error */
#define   O_CC_MESSAGE		4	/*   offset of message text */
#define  FT_DATA_REQUEST	0xc2	/*  frame type: data request (host->) */
#define   O_DR_SF		1	/*   offset to start field */
#define   O_DR_DATA_CODE	2	/*   offset to data code */
#define   O_DR_FRAME_SEQ	3	/*   offset to frame sequence */
#define  FT_RETRANSMIT		0x4c	/*  frame type: retransmit (host->) */
#define  FT_DATA		0xc1	/*  frame type: data (bidirectional) */
#define   O_DT_FRAME_SEQ	1	/*   offset to frame sequence */
#define   O_DT_CSUM		2	/*   offset to checksum */
#define   O_DT_LEN		3	/*   offset to length */
#define   O_DT_DATA		5	/*   offset to data */

/* Response Area */
#define O_RESPONSE		1914	/* offset to response area */
#define RO_FRAME_TYPE		(O_RESPONSE+1)	/* response frame type */
#define  RFT_RETRANSMIT		0x4c	/* response frame type: retransmit */
#define  RFT_CONTROL_CODE	0xc3	/* response frame type: control code */
#define RO_FRAME_SEQ		(O_RESPONSE+2)	/* response frame sequence */
#define RO_REASON_CODE		(O_RESPONSE+3)	/* response reason code */

/* Special Data */
#define EOF_DATA1		0x5c	/* special data for EOF */
#define EOF_DATA2		0xa9

/* Acknowledgement AIDs */
#define ACK_OK			AID_ENTER
#define ACK_RETRANSMIT		AID_PF1
#define ACK_RESYNC_VM		AID_CLEAR
#define ACK_RESYNC_TSO		AID_PA2
#define ACK_ABORT		AID_PF2

/* Data area for uploads. */
#define O_UP_DATA_CODE		2	/* offset to data code */
#define O_UP_FRAME_SEQ		3	/* offset to frame sequence */
#define O_UP_CSUM		4	/* offset to checksum */
#define O_UP_LEN		5	/* offset to length */
#define O_UP_DATA		7	/* offset to start of data */
#define O_UP_MAX		(1919 - O_UP_DATA)	/* max upload data */