crypto/heimdal-0.6.3/lib/krb5/prog_setup.c

   1 /*
   2  * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "krb5_locl.h"
  35 #include <getarg.h>
  36 #include <err.h>
  37
  38 RCSID("$Id: prog_setup.c,v 1.9 2001/02/20 01:44:54 assar Exp $");
  39
  40 void
  41 krb5_std_usage(int code, struct getargs *args, int num_args)
  42 {
  43     arg_printusage(args, num_args, NULL, "");
  44     exit(code);
  45 }
  46
  47 int
  48 krb5_program_setup(krb5_context *context, int argc, char **argv,
  49                    struct getargs *args, int num_args,
  50                    void (*usage)(int, struct getargs*, int))
  51 {
  52     krb5_error_code ret;
  53     int optind = 0;
  54
  55     if(usage == NULL)
  56         usage = krb5_std_usage;
  57
  58     setprogname(argv[0]);
  59     ret = krb5_init_context(context);
  60     if (ret)
  61         errx (1, "krb5_init_context failed: %d", ret);
  62
  63     if(getarg(args, num_args, argc, argv, &optind))
  64         (*usage)(1, args, num_args);
  65     return optind;
  66 }