source: trunk/server/source4/heimdal/kpasswd/kpasswd.c

Last change on this file was 745, checked in by Silvan Scherrer, 13 years ago

Samba Server: updated trunk to 3.6.0
File size: 7.0 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 },
44 { "cache", 'c', arg_string, &cred_cache_str },
45 { "version", 0, arg_flag, &version_flag },
46 { "help", 0, arg_flag, &help_flag }
47};
48
49static void
50usage (int ret, struct getargs *a, int num_args)
51{
52 arg_printusage (a, num_args, NULL, "[principal ...]");
53 exit (ret);
54}
55
56static int
57change_password(krb5_context context,
58 krb5_principal principal,
59 krb5_ccache id)
60{
61 krb5_data result_code_string, result_string;
62 int result_code;
63 krb5_error_code ret;
64 char pwbuf[BUFSIZ];
65 char *msg, *name;
66
67 krb5_data_zero (&result_code_string);
68 krb5_data_zero (&result_string);
69
70 name = msg = NULL;
71 if (principal == NULL)
72 asprintf(&msg, "New password: ");
73 else {
74 ret = krb5_unparse_name(context, principal, &name);
75 if (ret)
76 krb5_err(context, 1, ret, "krb5_unparse_name");
77
78 asprintf(&msg, "New password for %s: ", name);
79 }
80
81 if (msg == NULL)
82 krb5_errx (context, 1, "out of memory");
83
84 ret = UI_UTIL_read_pw_string (pwbuf, sizeof(pwbuf), msg, 1);
85 free(msg);
86 if (name)
87 free(name);
88 if (ret != 0) {
89 return 1;
90 }
91
92 ret = krb5_set_password_using_ccache (context, id, pwbuf,
93 principal,
94 &result_code,
95 &result_code_string,
96 &result_string);
97 if (ret) {
98 krb5_warn (context, ret, "krb5_set_password_using_ccache");
99 return 1;
100 }
101
102 printf ("%s%s%.*s\n", krb5_passwd_result_to_string(context, result_code),
103 result_string.length > 0 ? " : " : "",
104 (int)result_string.length,
105 result_string.length > 0 ? (char *)result_string.data : "");
106
107 krb5_data_free (&result_code_string);
108 krb5_data_free (&result_string);
109
110 return ret != 0;
111}
112
113
114int
115main (int argc, char **argv)
116{
117 krb5_error_code ret;
118 krb5_context context;
119 krb5_principal principal;
120 krb5_get_init_creds_opt *opt;
121 krb5_ccache id = NULL;
122 int exit_value;
123 int optidx = 0;
124
125 setprogname(argv[0]);
126
127 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
128 usage(1, args, sizeof(args) / sizeof(args[0]));
129 if (help_flag)
130 usage(0, args, sizeof(args) / sizeof(args[0]));
131 if (version_flag) {
132 print_version(NULL);
133 return 0;
134 }
135 argc -= optidx;
136 argv += optidx;
137
138 ret = krb5_init_context (&context);
139 if (ret)
140 errx (1, "krb5_init_context failed: %d", ret);
141
142 ret = krb5_get_init_creds_opt_alloc (context, &opt);
143 if (ret)
144 krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
145
146 krb5_get_init_creds_opt_set_tkt_life (opt, 300);
147 krb5_get_init_creds_opt_set_forwardable (opt, FALSE);
148 krb5_get_init_creds_opt_set_proxiable (opt, FALSE);
149
150 if (cred_cache_str) {
151 ret = krb5_cc_resolve(context, cred_cache_str, &id);
152 if (ret)
153 krb5_err (context, 1, ret, "krb5_cc_resolve");
154 } else {
155 ret = krb5_cc_new_unique(context, krb5_cc_type_memory, NULL, &id);
156 if (ret)
157 krb5_err (context, 1, ret, "krb5_cc_new_unique");
158 }
159
160 if (cred_cache_str == NULL) {
161 krb5_principal admin_principal = NULL;
162 krb5_creds cred;
163
164 if (admin_principal_str) {
165 ret = krb5_parse_name (context, admin_principal_str,
166 &admin_principal);
167 if (ret)
168 krb5_err (context, 1, ret, "krb5_parse_name");
169 } else if (argc == 1) {
170 ret = krb5_parse_name (context, argv[0], &admin_principal);
171 if (ret)
172 krb5_err (context, 1, ret, "krb5_parse_name");
173 } else {
174 ret = krb5_get_default_principal (context, &admin_principal);
175 if (ret)
176 krb5_err (context, 1, ret, "krb5_get_default_principal");
177 }
178
179 ret = krb5_get_init_creds_password (context,
180 &cred,
181 admin_principal,
182 NULL,
183 krb5_prompter_posix,
184 NULL,
185 0,
186 "kadmin/changepw",
187 opt);
188 switch (ret) {
189 case 0:
190 break;
191 case KRB5_LIBOS_PWDINTR :
192 return 1;
193 case KRB5KRB_AP_ERR_BAD_INTEGRITY :
194 case KRB5KRB_AP_ERR_MODIFIED :
195 krb5_errx(context, 1, "Password incorrect");
196 break;
197 default:
198 krb5_err(context, 1, ret, "krb5_get_init_creds");
199 }
200
201 krb5_get_init_creds_opt_free(context, opt);
202
203 ret = krb5_cc_initialize(context, id, admin_principal);
204 krb5_free_principal(context, admin_principal);
205 if (ret)
206 krb5_err(context, 1, ret, "krb5_cc_initialize");
207
208 ret = krb5_cc_store_cred(context, id, &cred);
209 if (ret)
210 krb5_err(context, 1, ret, "krb5_cc_store_cred");
211
212 krb5_free_cred_contents (context, &cred);
213 }
214
215 if (argc == 0) {
216 exit_value = change_password(context, NULL, id);
217 } else {
218 exit_value = 0;
219
220 while (argc-- > 0) {
221
222 ret = krb5_parse_name (context, argv[0], &principal);
223 if (ret)
224 krb5_err (context, 1, ret, "krb5_parse_name");
225
226 ret = change_password(context, principal, id);
227 if (ret)
228 exit_value = 1;
229 krb5_free_principal(context, principal);
230 argv++;
231 }
232 }
233
234 if (cred_cache_str == NULL) {
235 ret = krb5_cc_destroy(context, id);
236 if (ret)
237 krb5_err (context, 1, ret, "krb5_cc_destroy");
238 } else {
239 ret = krb5_cc_close(context, id);
240 if (ret)
241 krb5_err (context, 1, ret, "krb5_cc_close");
242 }
243
244 krb5_free_context (context);
245 return exit_value;
246}
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