1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* tests/icred.c - test harness for getting initial creds */
3 /*
4 * Copyright (C) 2013 by the Massachusetts Institute of Technology.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
30 * OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 /* This program exercises the init_creds APIs in ways kinit doesn't. */
34
35 #include "k5-platform.h"
36 #include <krb5.h>
37
38 static krb5_context ctx;
39
40 static void
check(krb5_error_code code)41 check(krb5_error_code code)
42 {
43 const char *errmsg;
44
45 if (code) {
46 errmsg = krb5_get_error_message(ctx, code);
47 fprintf(stderr, "%s\n", errmsg);
48 krb5_free_error_message(ctx, errmsg);
49 exit(1);
50 }
51 }
52
53 int
main(int argc,char ** argv)54 main(int argc, char **argv)
55 {
56 const char *ktname = NULL, *sname = NULL, *princstr, *password;
57 krb5_principal client;
58 krb5_init_creds_context icc;
59 krb5_get_init_creds_opt *opt;
60 krb5_keytab keytab = NULL;
61 krb5_creds creds;
62 krb5_boolean stepwise = FALSE;
63 krb5_preauthtype ptypes[64];
64 int c, nptypes = 0;
65 char *val;
66
67 check(krb5_init_context(&ctx));
68 check(krb5_get_init_creds_opt_alloc(ctx, &opt));
69
70 while ((c = getopt(argc, argv, "k:so:S:X:")) != -1) {
71 switch (c) {
72 case 'k':
73 ktname = optarg;
74 break;
75 case 's':
76 stepwise = TRUE;
77 break;
78 case 'o':
79 assert(nptypes < 64);
80 ptypes[nptypes++] = atoi(optarg);
81 break;
82 case 'S':
83 sname = optarg;
84 break;
85 case 'X':
86 val = strchr(optarg, '=');
87 if (val != NULL)
88 *val++ = '\0';
89 else
90 val = "yes";
91 check(krb5_get_init_creds_opt_set_pa(ctx, opt, optarg, val));
92 break;
93 default:
94 abort();
95 }
96 }
97
98 argc -= optind;
99 argv += optind;
100 if (argc != 1 && argc != 2)
101 abort();
102 princstr = argv[0];
103 password = argv[1];
104
105 if (sname != NULL) {
106 check(krb5_sname_to_principal(ctx, princstr, sname, KRB5_NT_SRV_HST,
107 &client));
108 } else {
109 check(krb5_parse_name(ctx, princstr, &client));
110 }
111
112 if (ktname != NULL)
113 check(krb5_kt_resolve(ctx, ktname, &keytab));
114
115 if (nptypes > 0)
116 krb5_get_init_creds_opt_set_preauth_list(opt, ptypes, nptypes);
117
118 if (stepwise) {
119 /* Use the stepwise interface. */
120 check(krb5_init_creds_init(ctx, client, NULL, NULL, 0, NULL, &icc));
121 if (keytab != NULL)
122 check(krb5_init_creds_set_keytab(ctx, icc, keytab));
123 if (password != NULL)
124 check(krb5_init_creds_set_password(ctx, icc, password));
125 check(krb5_init_creds_get(ctx, icc));
126 krb5_init_creds_free(ctx, icc);
127 } else if (keytab != NULL) {
128 check(krb5_get_init_creds_keytab(ctx, &creds, client, keytab, 0, NULL,
129 opt));
130 krb5_free_cred_contents(ctx, &creds);
131 } else {
132 /* Use the traditional one-shot interface. */
133 check(krb5_get_init_creds_password(ctx, &creds, client, password, NULL,
134 NULL, 0, NULL, opt));
135 krb5_free_cred_contents(ctx, &creds);
136 }
137
138 if (keytab != NULL)
139 krb5_kt_close(ctx, keytab);
140 krb5_get_init_creds_opt_free(ctx, opt);
141 krb5_free_principal(ctx, client);
142 krb5_free_context(ctx);
143 return 0;
144 }
145