/*
 * Copyright (c) 2001 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.
 */

#include <sm/gen.h>
SM_RCSID("@(#)$Id: strexit.c,v 1.3 2001/01/15 18:39:11 ca Exp $")
#include <sm/string.h>
#include <sm/sysexits.h>

/*
**  SM_STREXIT -- convert EX_* value from <sm/sysexits.h> to a character string
**
**      This function is analogous to strerror(), except that it
**      operates on EX_* values from <sm/sysexits.h>.
**
**      Parameters:
**              ex -- EX_* value
**
**      Results:
**              pointer to a static message string
*/

char *
sm_strexit(ex)
        int ex;
{
        char *msg;
        static char buf[64];

        msg = sm_sysexitmsg(ex);
        if (msg == NULL)
        {
                (void) sm_snprintf(buf, sizeof buf, "Unknown exit status %d",
                                   ex);
                msg = buf;
        }
        return msg;
}

/*
**  SM_SYSEXITMSG -- convert an EX_* value to a character string, or NULL
**
**      Parameters:
**              ex -- EX_* value
**
**      Results:
**              If ex is a known exit value, then a pointer to a static
**              message string is returned.  Otherwise NULL is returned.
*/

char *
sm_sysexitmsg(ex)
        int ex;
{
        char *msg;

        msg = sm_sysexmsg(ex);
        if (msg != NULL)
                return &msg[11];
        else
                return msg;
}

/*
**  SM_SYSEXMSG -- convert an EX_* value to a character string, or NULL
**
**      Parameters:
**              ex -- EX_* value
**
**      Results:
**              If ex is a known exit value, then a pointer to a static
**              string is returned.  Otherwise NULL is returned.
**              The string contains the following fixed width fields:
**               [0]    ':' if there is an errno value associated with this
**                      exit value, otherwise ' '.
**               [1,3]  3 digit SMTP error code
**               [4]    ' '
**               [5,9]  3 digit SMTP extended error code
**               [10]   ' '
**               [11,]  message string
*/

char *
sm_sysexmsg(ex)
        int ex;
{
        switch (ex)
        {
          case EX_USAGE:
                return " 500 5.0.0 Command line usage error";
          case EX_DATAERR:
                return " 501 5.6.0 Data format error";
          case EX_NOINPUT:
                return ":550 5.3.0 Cannot open input";
          case EX_NOUSER:
                return " 550 5.1.1 User unknown";
          case EX_NOHOST:
                return " 550 5.1.2 Host unknown";
          case EX_UNAVAILABLE:
                return " 554 5.0.0 Service unavailable";
          case EX_SOFTWARE:
                return ":554 5.3.0 Internal error";
          case EX_OSERR:
                return ":451 4.0.0 Operating system error";
          case EX_OSFILE:
                return ":554 5.3.5 System file missing";
          case EX_CANTCREAT:
                return ":550 5.0.0 Can't create output";
          case EX_IOERR:
                return ":451 4.0.0 I/O error";
          case EX_TEMPFAIL:
                return " 450 4.0.0 Deferred";
          case EX_PROTOCOL:
                return " 554 5.5.0 Remote protocol error";
          case EX_NOPERM:
                return ":550 5.0.0 Insufficient permission";
          case EX_CONFIG:
                return " 554 5.3.5 Local configuration error";
          default:
                return NULL;
        }
}