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 void KRB5_LIB_FUNCTION
  39 krb5_std_usage(int code, struct getargs *args, int num_args)
  40 {
  41     arg_printusage(args, num_args, NULL, "");
  42     exit(code);
  43 }
  44
  45 int KRB5_LIB_FUNCTION
  46 krb5_program_setup(krb5_context *context, int argc, char **argv,
  47                    struct getargs *args, int num_args,
  48                    void (*usage)(int, struct getargs*, int))
  49 {
  50     krb5_error_code ret;
  51     int optidx = 0;
  52
  53     if(usage == NULL)
  54         usage = krb5_std_usage;
  55
  56     setprogname(argv[0]);
  57     ret = krb5_init_context(context);
  58     if (ret)
  59         errx (1, "krb5_init_context failed: %d", ret);
  60
  61     if(getarg(args, num_args, argc, argv, &optidx))
  62         (*usage)(1, args, num_args);
  63     return optidx;
  64 }