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  KRB5_LIB_FUNCTION void KRB5_LIB_CALL
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  KRB5_LIB_FUNCTION int KRB5_LIB_CALL
46  krb5_program_setup(krb5_context *context, int argc, char **argv,
47  		   struct getargs *args, int num_args,
48  		   void (KRB5_LIB_CALL *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  }