gnu/libexec/uucp/libuuconf/paramc.c

/* paramc.c
   Handle protocol-parameter commands.

   Copyright (C) 1992 Ian Lance Taylor

   This file is part of the Taylor UUCP uuconf library.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License
   as published by the Free Software Foundation; either version 2 of
   the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

   The author of the program may be contacted at ian@airs.com or
   c/o Infinity Development Systems, P.O. Box 520, Waltham, MA 02254.
   */

#include "uucnfi.h"

#if USE_RCS_ID
const char _uuconf_paramc_rcsid[] = "$Id: paramc.c,v 1.1 1993/08/04 19:34:51 jtc Exp $";
#endif

#include <errno.h>
\f
/* Handle protocol-parameter commands by inserting them into an array
   of structures.  The return value may include UUCONF_CMDTABRET_KEEP
   and UUCONF_CMDTABRET_EXIT, if appropriate.  */

int
_uuconf_iadd_proto_param (qglobal, argc, argv, pqparam, pblock)
     struct sglobal *qglobal;
     int argc;
     char **argv;
     struct uuconf_proto_param **pqparam;
     pointer pblock;
{
  struct uuconf_proto_param *q;
  size_t c;
  struct uuconf_proto_param_entry *qentry;

  if (argc < 2)
    return UUCONF_SYNTAX_ERROR | UUCONF_CMDTABRET_EXIT;

  /* The first argument is the protocol character.  */
  if (argv[0][1] != '\0')
    return UUCONF_SYNTAX_ERROR | UUCONF_CMDTABRET_EXIT;

  if (*pqparam == NULL)
    {
      *pqparam = ((struct uuconf_proto_param *)
                  uuconf_malloc (pblock,
                                 2 * sizeof (struct uuconf_proto_param)));
      if (*pqparam == NULL)
        {
          qglobal->ierrno = errno;
          return (UUCONF_MALLOC_FAILED
                  | UUCONF_ERROR_ERRNO
                  | UUCONF_CMDTABRET_EXIT);
        }
      (*pqparam)[1].uuconf_bproto = '\0';
      q = *pqparam;
      q->uuconf_bproto = argv[0][0];
      q->uuconf_qentries = NULL;
    }
  else
    {
      c = 0;
      for (q = *pqparam; q->uuconf_bproto != '\0'; q++)
        {
          if (q->uuconf_bproto == argv[0][0])
            break;
          ++c;
        }

      if (q->uuconf_bproto == '\0')
        {
          struct uuconf_proto_param *qnew;

          qnew = ((struct uuconf_proto_param *)
                  uuconf_malloc (pblock,
                                 ((c + 2)
                                  * sizeof (struct uuconf_proto_param))));
          if (qnew == NULL)
            {
              qglobal->ierrno = errno;
              return (UUCONF_MALLOC_FAILED
                      | UUCONF_ERROR_ERRNO
                      | UUCONF_CMDTABRET_EXIT);
            }

          memcpy ((pointer) qnew, (pointer) *pqparam,
                  c * sizeof (struct uuconf_proto_param));
          qnew[c + 1].uuconf_bproto = '\0';

          uuconf_free (pblock, *pqparam);
          *pqparam = qnew;

          q = qnew + c;
          q->uuconf_bproto = argv[0][0];
          q->uuconf_qentries = NULL;
        }
    }

  if (q->uuconf_qentries == NULL)
    {
      qentry = ((struct uuconf_proto_param_entry *)
                uuconf_malloc (pblock,
                               2 * sizeof (struct uuconf_proto_param_entry)));
      if (qentry == NULL)
        {
          qglobal->ierrno = errno;
          return (UUCONF_MALLOC_FAILED
                  | UUCONF_ERROR_ERRNO
                  | UUCONF_CMDTABRET_EXIT);
        }

      qentry[1].uuconf_cargs = 0;
      q->uuconf_qentries = qentry;
    }
  else
    {
      struct uuconf_proto_param_entry *qnewent;

      c = 0;
      for (qentry = q->uuconf_qentries; qentry->uuconf_cargs != 0; qentry++)
        ++c;

      qnewent = ((struct uuconf_proto_param_entry *)
                 uuconf_malloc (pblock,
                                ((c + 2) *
                                 sizeof (struct uuconf_proto_param_entry))));
      if (qnewent == NULL)
        {
          qglobal->ierrno = errno;
          return (UUCONF_MALLOC_FAILED
                  | UUCONF_ERROR_ERRNO
                  | UUCONF_CMDTABRET_EXIT);
        }

      memcpy ((pointer) qnewent, (pointer) q->uuconf_qentries,
              c * sizeof (struct uuconf_proto_param_entry));
      qnewent[c + 1].uuconf_cargs = 0;

      uuconf_free (pblock, q->uuconf_qentries);
      q->uuconf_qentries = qnewent;

      qentry = qnewent + c;
    }

  qentry->uuconf_cargs = argc - 1;
  qentry->uuconf_pzargs = (char **) uuconf_malloc (pblock,
                                                   ((argc - 1)
                                                    * sizeof (char *)));
  if (qentry->uuconf_pzargs == NULL)
    {
      qglobal->ierrno = errno;
      qentry->uuconf_cargs = 0;
      return (UUCONF_MALLOC_FAILED
              | UUCONF_ERROR_ERRNO
              | UUCONF_CMDTABRET_EXIT);
    }
  memcpy ((pointer) qentry->uuconf_pzargs, (pointer) (argv + 1),
          (argc - 1) * sizeof (char *));

  return UUCONF_CMDTABRET_KEEP;
}