/*
*         OpenPBS (Portable Batch System) v2.3 Software License
*
* Copyright (c) 1999-2000 Veridian Information Solutions, Inc.
* All rights reserved.
*
* ---------------------------------------------------------------------------
* For a license to use or redistribute the OpenPBS software under conditions
* other than those described below, or to purchase support for this software,
* please contact Veridian Systems, PBS Products Department ("Licensor") at:
*
*    www.OpenPBS.org  +1 650 967-4675                  sales@OpenPBS.org
*                        877 902-4PBS (US toll-free)
* ---------------------------------------------------------------------------
*
* This license covers use of the OpenPBS v2.3 software (the "Software") at
* your site or location, and, for certain users, redistribution of the
* Software to other sites and locations.  Use and redistribution of
* OpenPBS v2.3 in source and binary forms, with or without modification,
* are permitted provided that all of the following conditions are met.
* After December 31, 2001, only conditions 3-6 must be met:
*
* 1. Commercial and/or non-commercial use of the Software is permitted
*    provided a current software registration is on file at www.OpenPBS.org.
*    If use of this software contributes to a publication, product, or
*    service, proper attribution must be given; see www.OpenPBS.org/credit.html
*
* 2. Redistribution in any form is only permitted for non-commercial,
*    non-profit purposes.  There can be no charge for the Software or any
*    software incorporating the Software.  Further, there can be no
*    expectation of revenue generated as a consequence of redistributing
*    the Software.
*
* 3. Any Redistribution of source code must retain the above copyright notice
*    and the acknowledgment contained in paragraph 6, this list of conditions
*    and the disclaimer contained in paragraph 7.
*
* 4. Any Redistribution in binary form must reproduce the above copyright
*    notice and the acknowledgment contained in paragraph 6, this list of
*    conditions and the disclaimer contained in paragraph 7 in the
*    documentation and/or other materials provided with the distribution.
*
* 5. Redistributions in any form must be accompanied by information on how to
*    obtain complete source code for the OpenPBS software and any
*    modifications and/or additions to the OpenPBS software.  The source code
*    must either be included in the distribution or be available for no more
*    than the cost of distribution plus a nominal fee, and all modifications
*    and additions to the Software must be freely redistributable by any party
*    (including Licensor) without restriction.
*
* 6. All advertising materials mentioning features or use of the Software must
*    display the following acknowledgment:
*
*     "This product includes software developed by NASA Ames Research Center,
*     Lawrence Livermore National Laboratory, and Veridian Information
*     Solutions, Inc.
*     Visit www.OpenPBS.org for OpenPBS software support,
*     products, and information."
*
* 7. DISCLAIMER OF WARRANTY
*
* THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT
* ARE EXPRESSLY DISCLAIMED.
*
* IN NO EVENT SHALL VERIDIAN CORPORATION, ITS AFFILIATED COMPANIES, OR THE
* U.S. GOVERNMENT OR ANY OF ITS AGENCIES BE LIABLE FOR ANY DIRECT OR INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This license will be governed by the laws of the Commonwealth of Virginia,
* without reference to its choice of law rules.
*/

#include <pbs_config.h>   /* the master config generated by configure */

#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include "dis.h"
#include "dis_internal.h"
#include "tcp.h"

static char *ulmax;
unsigned ulmaxdigs = 0;

int disrsl_(

  struct tcp_chan *chan,
  int             *negate,
  unsigned long   *value,
  unsigned long    count)

  {
  int            c;
  unsigned long  locval;
  unsigned long  ndigs;
  char          *cp;
  char           scratch[DIS_BUFSIZ];

  assert(negate != NULL);
  assert(value != NULL);
  assert(count);

  memset(scratch, 0, sizeof(scratch));

  if (ulmaxdigs == 0)
    {
    cp = discul_(scratch + sizeof(scratch) - 1, ULONG_MAX, &ulmaxdigs);

    ulmax = (char *)calloc(1, ulmaxdigs);

    if (ulmax == NULL)
      {
      return(DIS_NOMALLOC);
      }

    memcpy(ulmax, cp, ulmaxdigs);

    if (dis_umaxd == 0)
      disiui_();
    }

  if (count >= ulmaxdigs)
    {
    if (count > ulmaxdigs)
      goto overflow;

    if (memcmp(scratch, ulmax, ulmaxdigs) > 0)
      goto overflow;
    }

  c = tcp_getc(chan, pbs_tcp_timeout);

  /* FORMAT:  +2+1+0+0+64+2079+22+251175826.teva.westgrid.ubc2+362+21+8Job_Name+02+11run32_.2557+02+ ... */

  switch (c)
    {

    case '-':

    case '+':

      *negate = (c == '-');

      if (tcp_gets(chan, scratch, count, pbs_tcp_timeout) != (int)count)
        {
        return(DIS_EOD);
        }

      if (count >= ulmaxdigs)
        {
        if (count > ulmaxdigs)
          goto overflow;

        if (memcmp(scratch, ulmax, ulmaxdigs) > 0)
          goto overflow;
        }

      cp = scratch;

      locval = 0;

      do
        {
        if ((c = *cp++) < '0' || c > '9')
          {
          return(DIS_NONDIGIT);
          }

        locval = 10 * locval + c - '0';
        }
      while (--count);

      *value = locval;

      return(DIS_SUCCESS);

      /*NOTREACHED*/

      break;

    case '0':

      return(DIS_LEADZRO);

      /*NOTREACHED*/

      break;

    case '1':

    case '2':

    case '3':

    case '4':

    case '5':

    case '6':

    case '7':

    case '8':

    case '9':

      ndigs = c - '0';

      if (count > 1)
        {
        if (tcp_gets(chan, scratch + 1, count - 1, pbs_tcp_timeout) != (int)count - 1)
          {
          /* FAILURE */

          return(DIS_EOD);
          }

        cp = scratch;

        if (count >= ulmaxdigs)
          {
          if (count > ulmaxdigs)
            break;

          *cp = c;

          if (memcmp(scratch, ulmax, ulmaxdigs) > 0)
            break;
          }

        while (--count)
          {
          if (((c = *++cp) < '0') || (c > '9'))
            {
            /* FAILURE */
            return(DIS_NONDIGIT);
            }

          ndigs = 10 * ndigs + c - '0';
          }
        }

      return(disrsl_(chan, negate, value, ndigs));

      /*NOTREACHED*/

      break;

    case - 1:

      /* FAILURE */

      return(DIS_EOD);

      /*NOTREACHED*/

      break;

    case -2:

      /* FAILURE */

      return(DIS_EOF);

      /*NOTREACHED*/

      break;

    default:

      /* FAILURE */

      return(DIS_NONDIGIT);

      /*NOTREACHED*/

      break;
    }  /* END switch (c) */

  *negate = FALSE;

overflow:

  *value = ULONG_MAX;

  return(DIS_OVERFLOW);
  }  /* END disrsl_() */

/* END disrsl_.c */


