/*
*         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.
*/
/*
 * Synopsis:
 * int disrfst(int stream, size_t achars, char *value)
 *
 * Gets a Data-is-Strings character string from <stream> and converts it
 * into an ASCII NUL-terminated string, and puts the string into <value>,
 * a pre-allocated string, <achars> long.  The character string in <stream>
 * consists of an unsigned integer, followed by a number of characters
 * determined by the unsigned integer.
 *
 * Disrfst returns DIS_SUCCESS if everything works well.  It returns an
 * error code otherwise.  In case of an error, the <stream> character
 * pointer is reset, making it possible to retry with some other conversion
 * strategy, and the first character of <value> is set to ASCII NUL.
 */

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

#include <assert.h>
#include <stddef.h>
#include <stdlib.h>

#ifndef NDEBUG
#include <string.h>
#endif

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

int disrfst(

  struct tcp_chan *chan,
  size_t  achars,
  char   *value)

  {
  int  locret;
  /*int           rc;*/

  int  negate;
  unsigned count;

  assert(value != NULL);
  
  locret = disrsi_(chan, &negate, &count, 1, pbs_tcp_timeout);

  if (locret == DIS_SUCCESS)
    {
    if (negate)
      locret = DIS_BADSIGN;
    else if (count > achars)
      locret = DIS_OVERFLOW;
    else if (tcp_gets(chan, value, (size_t)count, pbs_tcp_timeout) != (int)count)
      locret = DIS_PROTO;

#ifndef NDEBUG
    else if (memchr(value, 0, (size_t)count))
      locret = DIS_NULLSTR;

#endif
    else
      value[count] = '\0';
    }

  /*
    if (locret == DIS_SUCCESS)
      rc = tcp_rcommit(chan,TRUE);
    else
      rc = tcp_rcommit(chan,FALSE);

    locret = (rc != 0) ? rc : DIS_NOCOMMIT;
  */

  locret = tcp_rcommit(chan, locret == DIS_SUCCESS) ?
           DIS_NOCOMMIT :
           locret;

  if (locret != DIS_SUCCESS)
    *value = '\0';

  return(locret);
  }  /* END disrfst() */




