lib/krb5/test_forward.c

   1 /*
   2  * Copyright (c) 2008 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 KTH nor the names of its contributors may be
  18  *    used to endorse or promote products derived from this software without
  19  *    specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  22  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
  25  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  28  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
  32
  33 #include "krb5_locl.h"
  34 #include <err.h>
  35 #include <getarg.h>
  36
  37 static int version_flag = 0;
  38 static int help_flag    = 0;
  39
  40 static struct getargs args[] = {
  41     {"version", 0,      arg_flag,       &version_flag,
  42      "print version", NULL },
  43     {"help",    0,      arg_flag,       &help_flag,
  44      NULL, NULL }
  45 };
  46
  47 static void
  48 usage (int ret)
  49 {
  50     arg_printusage (args,
  51                     sizeof(args)/sizeof(*args),
  52                     NULL,
  53                     "hostname");
  54     exit (ret);
  55 }
  56
  57 int
  58 main(int argc, char **argv)
  59 {
  60     const char *hostname;
  61     krb5_context context;
  62     krb5_auth_context ac;
  63     krb5_error_code ret;
  64     krb5_creds cred;
  65     krb5_ccache id;
  66     krb5_data data;
  67     int optidx = 0;
  68
  69     setprogname (argv[0]);
  70
  71     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
  72         usage(1);
  73
  74     if (help_flag)
  75         usage (0);
  76
  77     if(version_flag){
  78         print_version(NULL);
  79         exit(0);
  80     }
  81
  82     argc -= optidx;
  83     argv += optidx;
  84
  85     if (argc < 1)
  86         usage(1);
  87
  88     hostname = argv[0];
  89
  90     memset(&cred, 0, sizeof(cred));
  91
  92     ret = krb5_init_context(&context);
  93     if (ret)
  94         errx (1, "krb5_init_context failed: %d", ret);
  95
  96     ret = krb5_cc_default(context, &id);
  97     if (ret)
  98         krb5_err(context, 1, ret, "krb5_cc_default failed");
  99
 100     ret = krb5_auth_con_init(context, &ac);
 101     if (ret)
 102         krb5_err(context, 1, ret, "krb5_auth_con_init failed");
 103
 104     krb5_auth_con_addflags(context, ac,
 105                            KRB5_AUTH_CONTEXT_CLEAR_FORWARDED_CRED, NULL);
 106
 107     ret = krb5_cc_get_principal(context, id, &cred.client);
 108     if (ret)
 109         krb5_err(context, 1, ret, "krb5_cc_get_principal");
 110
 111     ret = krb5_make_principal(context,
 112                               &cred.server,
 113                               krb5_principal_get_realm(context, cred.client),
 114                               KRB5_TGS_NAME,
 115                               krb5_principal_get_realm(context, cred.client),
 116                               NULL);
 117     if (ret)
 118         krb5_err(context, 1, ret, "krb5_make_principal(server)");
 119
 120     ret = krb5_get_forwarded_creds (context,
 121                                     ac,
 122                                     id,
 123                                     KDC_OPT_FORWARDABLE,
 124                                     hostname,
 125                                     &cred,
 126                                     &data);
 127     if (ret)
 128         krb5_err (context, 1, ret, "krb5_get_forwarded_creds");
 129
 130     krb5_data_free(&data);
 131     krb5_free_context(context);
 132
 133     return 0;
 134 }