sendmail/libsm/strexit.c

/*
 * Copyright (c) 2001 Proofpoint, 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 1.6 2013-11-22 20:51:43 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;
    }
}