/*
 * Copyright (c) 1998 Sendmail, Inc.  All rights reserved.
 * Copyright (c) 1983, 1995-1997 Eric P. Allman.  All rights reserved.
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  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.
 *
 */

#ifndef lint
static char sccsid[] = "@(#)sysexits.c	8.13 (Berkeley) 5/24/1998";
#endif /* not lint */

#include "sendmail.h"

/*
**  SYSEXITS.C -- error messages corresponding to sysexits.h
**
**	If the first character of the string is a colon, interpolate
**	the current errno after the rest of the string.
*/

char *SysExMsg[] =
{
	/* 64 USAGE */		" 500 Bad usage",
	/* 65 DATAERR */	" 501 Data format error",
	/* 66 NOINPUT */	":550 Cannot open input",
	/* 67 NOUSER */		" 550 User unknown",
	/* 68 NOHOST */		" 550 Host unknown",
	/* 69 UNAVAILABLE */	" 554 Service unavailable",
	/* 70 SOFTWARE */	":554 Internal error",
	/* 71 OSERR */		":451 Operating system error",
	/* 72 OSFILE */		":554 System file missing",
	/* 73 CANTCREAT */	":550 Can't create output",
	/* 74 IOERR */		":451 I/O error",
	/* 75 TEMPFAIL */	" 250 Deferred",
	/* 76 PROTOCOL */	" 554 Remote protocol error",
	/* 77 NOPERM */		":550 Insufficient permission",
	/* 78 CONFIG */		" 554 Local configuration error",
};

int N_SysEx = sizeof(SysExMsg) / sizeof(SysExMsg[0]);
/*
**  DSNTOEXITSTAT -- convert DSN-style error code to EX_ style.
**
**	Parameters:
**		dsncode -- the text of the DSN-style code.
**
**	Returns:
**		The corresponding exit status.
*/

int
dsntoexitstat(dsncode)
	char *dsncode;
{
	int code2, code3;

	/* first the easy cases.... */
	if (*dsncode == '2')
		return EX_OK;
	if (*dsncode == '4')
		return EX_TEMPFAIL;

	/* now decode the other two field parts */
	if (*++dsncode == '.')
		dsncode++;
	code2 = atoi(dsncode);
	while (*dsncode != '\0' && *dsncode != '.')
		dsncode++;
	if (*dsncode != '\0')
		dsncode++;
	code3 = atoi(dsncode);

	/* and do a nested switch to work them out */
	switch (code2)
	{
	  case 0:	/* Other or Undefined status */
		return EX_UNAVAILABLE;

	  case 1:	/* Address Status */
		switch (code3)
		{
		  case 0:	/* Other Address Status */
			return EX_DATAERR;

		  case 1:	/* Bad destination mailbox address */
		  case 6:	/* Mailbox has moved, No forwarding address */
			return EX_NOUSER;

		  case 2:	/* Bad destination system address */
		  case 8:	/* Bad senders system address */
			return EX_NOHOST;

		  case 3:	/* Bad destination mailbox address syntax */
		  case 7:	/* Bad senders mailbox address syntax */
			return EX_USAGE;

		  case 4:	/* Destination mailbox address ambiguous */
			return EX_UNAVAILABLE;

		  case 5:	/* Destination address valid */
			return EX_OK;
		}
		break;

	  case 2:	/* Mailbox Status */
		switch (code3)
		{
		  case 0:	/* Other or Undefined mailbox status */
		  case 1:	/* Mailbox disabled, not acccepting messages */
		  case 2:	/* Mailbox full */
		  case 4:	/* Mailing list expansion problem */
			return EX_UNAVAILABLE;

		  case 3:	/* Message length exceeds administrative lim */
			return EX_DATAERR;
		}
		break;

	  case 3:	/* System Status */
		return EX_OSERR;

	  case 4:	/* Network and Routing Status */
		switch (code3)
		{
		  case 0:	/* Other or undefined network or routing stat */
			return EX_IOERR;

		  case 1:	/* No answer from host */
		  case 3:	/* Routing server failure */
		  case 5:	/* Network congestion */
			return EX_TEMPFAIL;

		  case 2:	/* Bad connection */
			return EX_IOERR;

		  case 4:	/* Unable to route */
			return EX_PROTOCOL;

		  case 6:	/* Routing loop detected */
			return EX_CONFIG;

		  case 7:	/* Delivery time expired */
			return EX_UNAVAILABLE;
		}
		break;

	  case 5:	/* Protocol Status */
		return EX_PROTOCOL;

	  case 6:	/* Message Content or Media Status */
		return EX_UNAVAILABLE;

	  case 7:	/* Security Status */
		return EX_DATAERR;
	}
	return EX_CONFIG;
}