/crypto/heimdal/kuser/kverify.c

  1/*
  2 * Copyright (c) 1997 - 2005, 2007 Kungliga Tekniska Hรถgskolan
  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 "kuser_locl.h"
 35
 36static int help_flag = 0;
 37static int version_flag = 0;
 38
 39static struct getargs args[] = {
 40    { "version", 	0,   arg_flag, &version_flag },
 41    { "help",		0,   arg_flag, &help_flag }
 42};
 43
 44static void
 45usage (int ret)
 46{
 47    arg_printusage (args,
 48		    sizeof(args)/sizeof(*args),
 49		    NULL,
 50		    "[principal]");
 51    exit (ret);
 52}
 53
 54int
 55main(int argc, char **argv)
 56{
 57    krb5_context context;
 58    krb5_error_code ret;
 59    krb5_creds cred;
 60    krb5_preauthtype pre_auth_types[] = {KRB5_PADATA_ENC_TIMESTAMP};
 61    krb5_get_init_creds_opt *get_options;
 62    krb5_verify_init_creds_opt verify_options;
 63    krb5_principal principal = NULL;
 64    int optidx = 0;
 65
 66    setprogname (argv[0]);
 67
 68    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 69	usage(1);
 70
 71    if (help_flag)
 72	usage (0);
 73
 74    if(version_flag) {
 75	print_version(NULL);
 76	exit(0);
 77    }
 78
 79    argc -= optidx;
 80    argv += optidx;
 81
 82    ret = krb5_init_context(&context);
 83    if (ret)
 84	errx (1, "krb5_init_context failed: %d", ret);
 85
 86    ret = krb5_get_init_creds_opt_alloc (context, &get_options);
 87    if (ret)
 88	krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
 89
 90    krb5_get_init_creds_opt_set_preauth_list (get_options,
 91					      pre_auth_types,
 92					      1);
 93
 94    krb5_verify_init_creds_opt_init (&verify_options);
 95
 96    if (argc) {
 97	ret = krb5_parse_name(context, argv[0], &principal);
 98	if (ret)
 99	    krb5_err(context, 1, ret, "krb5_parse_name: %s", argv[0]);
100    } else {
101	ret = krb5_get_default_principal(context, &principal);
102	if (ret)
103	    krb5_err(context, 1, ret, "krb5_get_default_principal");
104
105    }
106
107    ret = krb5_get_init_creds_password (context,
108					&cred,
109					principal,
110					NULL,
111					krb5_prompter_posix,
112					NULL,
113					0,
114					NULL,
115					get_options);
116    if (ret)
117	krb5_err(context, 1, ret,  "krb5_get_init_creds");
118
119    ret = krb5_verify_init_creds (context,
120				  &cred,
121				  NULL,
122				  NULL,
123				  NULL,
124				  &verify_options);
125    if (ret)
126	krb5_err(context, 1, ret, "krb5_verify_init_creds");
127    krb5_free_cred_contents (context, &cred);
128    krb5_free_context (context);
129    return 0;
130}