source: heimdal/trunk/kpasswd/kpasswd.c@ 3

Last change on this file since 3 was 1, checked in by Paul Smedley, 10 years ago

Initial commit of Heimdal 1.5.3
File size: 6.8 KB
Line 
1/*
2 * Copyright (c) 1997-2004 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 "kpasswd_locl.h"
35RCSID("$Id$");
36
37static int version_flag;
38static int help_flag;
39static char *admin_principal_str;
40static char *cred_cache_str;
41
42static struct getargs args[] = {
43 { "admin-principal", 0, arg_string, &admin_principal_str, NULL,
44 NULL },
45 { "cache", 'c', arg_string, &cred_cache_str, NULL, NULL },
46 { "version", 0, arg_flag, &version_flag, NULL, NULL },
47 { "help", 0, arg_flag, &help_flag, NULL, NULL }
48};
49
50static void
51usage (int ret, struct getargs *a, int num_args)
52{
53 arg_printusage (a, num_args, NULL, "[principal ...]");
54 exit (ret);
55}
56
57static int
58change_password(krb5_context context,
59 krb5_principal principal,
60 krb5_ccache id)
61{
62 krb5_data result_code_string, result_string;
63 int result_code;
64 krb5_error_code ret;
65 char pwbuf[BUFSIZ];
66 char *msg, *name;
67
68 krb5_data_zero (&result_code_string);
69 krb5_data_zero (&result_string);
70
71 name = msg = NULL;
72 if (principal == NULL)
73 asprintf(&msg, "New password: ");
74 else {
75 ret = krb5_unparse_name(context, principal, &name);
76 if (ret)
77 krb5_err(context, 1, ret, "krb5_unparse_name");
78
79 asprintf(&msg, "New password for %s: ", name);
80 }
81
82 if (msg == NULL)
83 krb5_errx (context, 1, "out of memory");
84
85 ret = UI_UTIL_read_pw_string (pwbuf, sizeof(pwbuf), msg, 1);
86 free(msg);
87 if (name)
88 free(name);
89 if (ret != 0) {
90 return 1;
91 }
92
93 ret = krb5_set_password_using_ccache (context, id, pwbuf,
94 principal,
95 &result_code,
96 &result_code_string,
97 &result_string);
98 if (ret) {
99 krb5_warn (context, ret, "krb5_set_password_using_ccache");
100 return 1;
101 }
102
103 printf ("%s%s%.*s\n", krb5_passwd_result_to_string(context, result_code),
104 result_string.length > 0 ? " : " : "",
105 (int)result_string.length,
106 result_string.length > 0 ? (char *)result_string.data : "");
107
108 krb5_data_free (&result_code_string);
109 krb5_data_free (&result_string);
110
111 return ret != 0;
112}
113
114
115int
116main (int argc, char **argv)
117{
118 krb5_error_code ret;
119 krb5_context context;
120 krb5_principal principal;
121 krb5_get_init_creds_opt *opt;
122 krb5_ccache id = NULL;
123 int exit_value;
124 int optidx = 0;
125
126 setprogname(argv[0]);
127
128 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
129 usage(1, args, sizeof(args) / sizeof(args[0]));
130 if (help_flag)
131 usage(0, args, sizeof(args) / sizeof(args[0]));
132 if (version_flag) {
133 print_version(NULL);
134 return 0;
135 }
136 argc -= optidx;
137 argv += optidx;
138
139 ret = krb5_init_context (&context);
140 if (ret)
141 errx (1, "krb5_init_context failed: %d", ret);
142
143 ret = krb5_get_init_creds_opt_alloc (context, &opt);
144 if (ret)
145 krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
146
147 krb5_get_init_creds_opt_set_tkt_life (opt, 300);
148 krb5_get_init_creds_opt_set_forwardable (opt, FALSE);
149 krb5_get_init_creds_opt_set_proxiable (opt, FALSE);
150
151 if (cred_cache_str) {
152 ret = krb5_cc_resolve(context, cred_cache_str, &id);
153 if (ret)
154 krb5_err (context, 1, ret, "krb5_cc_resolve");
155 } else {
156 ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, &id);
157 if (ret)
158 krb5_err (context, 1, ret, "krb5_cc_new_unique");
159 }
160
161 if (cred_cache_str == NULL) {
162 krb5_principal admin_principal = NULL;
163 krb5_creds cred;
164
165 if (admin_principal_str) {
166 ret = krb5_parse_name (context, admin_principal_str,
167 &admin_principal);
168 if (ret)
169 krb5_err (context, 1, ret, "krb5_parse_name");
170 } else if (argc == 1) {
171 ret = krb5_parse_name (context, argv[0], &admin_principal);
172 if (ret)
173 krb5_err (context, 1, ret, "krb5_parse_name");
174 } else {
175 ret = krb5_get_default_principal (context, &admin_principal);
176 if (ret)
177 krb5_err (context, 1, ret, "krb5_get_default_principal");
178 }
179
180 ret = krb5_get_init_creds_password (context,
181 &cred,
182 admin_principal,
183 NULL,
184 krb5_prompter_posix,
185 NULL,
186 0,
187 "kadmin/changepw",
188 opt);
189 switch (ret) {
190 case 0:
191 break;
192 case KRB5_LIBOS_PWDINTR :
193 return 1;
194 case KRB5KRB_AP_ERR_BAD_INTEGRITY :
195 case KRB5KRB_AP_ERR_MODIFIED :
196 krb5_errx(context, 1, "Password incorrect");
197 break;
198 default:
199 krb5_err(context, 1, ret, "krb5_get_init_creds");
200 }
201
202 krb5_get_init_creds_opt_free(context, opt);
203
204 ret = krb5_cc_initialize(context, id, admin_principal);
205 krb5_free_principal(context, admin_principal);
206 if (ret)
207 krb5_err(context, 1, ret, "krb5_cc_initialize");
208
209 ret = krb5_cc_store_cred(context, id, &cred);
210 if (ret)
211 krb5_err(context, 1, ret, "krb5_cc_store_cred");
212
213 krb5_free_cred_contents (context, &cred);
214 }
215
216 if (argc == 0) {
217 exit_value = change_password(context, NULL, id);
218 } else {
219 exit_value = 0;
220
221 while (argc-- > 0) {
222
223 ret = krb5_parse_name (context, argv[0], &principal);
224 if (ret)
225 krb5_err (context, 1, ret, "krb5_parse_name");
226
227 ret = change_password(context, principal, id);
228 if (ret)
229 exit_value = 1;
230 krb5_free_principal(context, principal);
231 argv++;
232 }
233 }
234
235 if (cred_cache_str == NULL) {
236 ret = krb5_cc_destroy(context, id);
237 if (ret)
238 krb5_err (context, 1, ret, "krb5_cc_destroy");
239 } else {
240 ret = krb5_cc_close(context, id);
241 if (ret)
242 krb5_err (context, 1, ret, "krb5_cc_close");
243 }
244
245 krb5_free_context (context);
246 return exit_value;
247}
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