/*
 * Copyright (c) 1999-2005 Sendmail, Inc. and its suppliers.
 *	All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 *
 *
 *	$Sendmail: mfdef.h,v 8.22 2005/08/05 21:49:04 ca Exp $
 */

/*
**  mfdef.h -- Global definitions for mail filter and MTA.
*/

#ifndef _LIBMILTER_MFDEF_H
# define _LIBMILTER_MFDEF_H	1

/* Shared protocol constants */
# define MILTER_LEN_BYTES	4	/* length of 32 bit integer in bytes */
# define MILTER_OPTLEN	(MILTER_LEN_BYTES * 3) /* length of options */
# define MILTER_CHUNK_SIZE	65535	/* body chunk size */
# define MILTER_MAX_DATA_SIZE	65535	/* default milter command data limit */

/* These apply to SMFIF_* flags */
#define SMFI_V1_ACTS	0x0000000FL	/* The actions of V1 filter */
#define SMFI_V2_ACTS	0x0000003FL	/* The actions of V2 filter */
#define SMFI_CURR_ACTS	SMFI_V2_ACTS	/* The current version */

/* address families */
# define SMFIA_UNKNOWN		'U'	/* unknown */
# define SMFIA_UNIX		'L'	/* unix/local */
# define SMFIA_INET		'4'	/* inet */
# define SMFIA_INET6		'6'	/* inet6 */

/* commands: don't use anything smaller than ' ' */
# define SMFIC_ABORT		'A'	/* Abort */
# define SMFIC_BODY		'B'	/* Body chunk */
# define SMFIC_CONNECT		'C'	/* Connection information */
# define SMFIC_MACRO		'D'	/* Define macro */
# define SMFIC_BODYEOB		'E'	/* final body chunk (End) */
# define SMFIC_HELO		'H'	/* HELO/EHLO */
# define SMFIC_HEADER		'L'	/* Header */
# define SMFIC_MAIL		'M'	/* MAIL from */
# define SMFIC_EOH		'N'	/* EOH */
# define SMFIC_OPTNEG		'O'	/* Option negotiation */
# define SMFIC_QUIT		'Q'	/* QUIT */
# define SMFIC_RCPT		'R'	/* RCPT to */
# if SMFI_VERSION > 3
#  define SMFIC_DATA		'T'	/* DATA */
# endif /* SMFI_VERSION > 3 */
# if SMFI_VERSION > 2
#  define SMFIC_UNKNOWN		'U'	/* Any unknown command */
# endif /* SMFI_VERSION > 2 */

/* actions (replies) */
# define SMFIR_ADDRCPT		'+'	/* add recipient */
# define SMFIR_DELRCPT		'-'	/* remove recipient */
# define SMFIR_ACCEPT		'a'	/* accept */
# define SMFIR_REPLBODY		'b'	/* replace body (chunk) */
# define SMFIR_CONTINUE		'c'	/* continue */
# define SMFIR_DISCARD		'd'	/* discard */
# define SMFIR_CONN_FAIL	'f'	/* cause a connection failure */
# define SMFIR_CHGHEADER	'm'	/* change header */
# define SMFIR_PROGRESS		'p'	/* progress */
# define SMFIR_REJECT		'r'	/* reject */
# define SMFIR_TEMPFAIL		't'	/* tempfail */
# define SMFIR_SHUTDOWN		'4'	/* 421: shutdown (internal to MTA) */
# define SMFIR_ADDHEADER	'h'	/* add header */
# define SMFIR_INSHEADER	'i'	/* insert header */
# define SMFIR_REPLYCODE	'y'	/* reply code etc */
# define SMFIR_QUARANTINE	'q'	/* quarantine */

/* What the MTA can send/filter wants in protocol */
# define SMFIP_NOCONNECT 0x00000001L	/* MTA should not send connect info */
# define SMFIP_NOHELO	0x00000002L	/* MTA should not send HELO info */
# define SMFIP_NOMAIL	0x00000004L	/* MTA should not send MAIL info */
# define SMFIP_NORCPT	0x00000008L	/* MTA should not send RCPT info */
# define SMFIP_NOBODY	0x00000010L	/* MTA should not send body */
# define SMFIP_NOHDRS	0x00000020L	/* MTA should not send headers */
# define SMFIP_NOEOH	0x00000040L	/* MTA should not send EOH */
# if _FFR_MILTER_NOHDR_RESP
#  define SMFIP_NOHREPL  0x00000080L	/* No reply for headers */
# endif /* _FFR_MILTER_NOHDR_RESP */
# define SMFIP_NOUNKNOWN 0x00000100L	/* MTA should not send unknown command */
# define SMFIP_NODATA    0x00000200L	/* MTA should not send DATA */

# define SMFI_V1_PROT	0x0000003FL	/* The protocol of V1 filter */
# define SMFI_V2_PROT	0x0000007FL	/* The protocol of V2 filter */

/* Note: the "current" version is now determined dynamically in milter.c */
# if _FFR_MILTER_NOHDR_RESP
#  define SMFI_CURR_PROT 0x000000FFL
# else /* _FFR_MILTER_NOHDR_RESP */
#  define SMFI_CURR_PROT SMFI_V2_PROT
# endif /* _FFR_MILTER_NOHDR_RESP */

#endif /* !_LIBMILTER_MFDEF_H */
