OpenBSD-4.6/kerberosV/src/kpasswd/kpasswd.c
/*
* Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "kpasswd_locl.h"
RCSID("$KTH: kpasswd.c,v 1.35 2005/01/05 16:08:03 lha Exp $");
static int version_flag;
static int help_flag;
static char *admin_principal_str;
static char *cred_cache_str;
static struct getargs args[] = {
{ "admin-principal", 0, arg_string, &admin_principal_str },
{ "cache", 'c', arg_string, &cred_cache_str },
{ "version", 0, arg_flag, &version_flag },
{ "help", 0, arg_flag, &help_flag }
};
static void
usage (int ret, struct getargs *a, int num_args)
{
arg_printusage (a, num_args, NULL, "[principal ...]");
exit (ret);
}
static int
change_password(krb5_context context,
krb5_principal principal,
krb5_ccache id)
{
krb5_data result_code_string, result_string;
int result_code;
krb5_error_code ret;
char pwbuf[BUFSIZ];
char *msg, *name;
krb5_data_zero (&result_code_string);
krb5_data_zero (&result_string);
name = msg = NULL;
if (principal == NULL)
asprintf(&msg, "New password: ");
else {
ret = krb5_unparse_name(context, principal, &name);
if (ret)
krb5_err(context, 1, ret, "krb5_unparse_name");
asprintf(&msg, "New password for %s: ", name);
}
if (msg == NULL)
krb5_errx (context, 1, "out of memory");
ret = UI_UTIL_read_pw_string (pwbuf, sizeof(pwbuf), msg, 1);
free(msg);
if (name)
free(name);
if (ret != 0) {
return 1;
}
ret = krb5_set_password_using_ccache (context, id, pwbuf,
principal,
&result_code,
&result_code_string,
&result_string);
if (ret) {
krb5_warn (context, ret, "krb5_set_password_using_ccache");
return 1;
}
printf ("%s%s%.*s\n", krb5_passwd_result_to_string(context, result_code),
result_string.length > 0 ? " : " : "",
(int)result_string.length,
result_string.length > 0 ? (char *)result_string.data : "");
krb5_data_free (&result_code_string);
krb5_data_free (&result_string);
return ret != 0;
}
int
main (int argc, char **argv)
{
krb5_error_code ret;
krb5_context context;
krb5_principal principal;
int optind = 0;
krb5_get_init_creds_opt *opt;
krb5_ccache id = NULL;
int exit_value;
optind = krb5_program_setup(&context, argc, argv,
args, sizeof(args) / sizeof(args[0]), usage);
if (help_flag)
usage (0, args, sizeof(args) / sizeof(args[0]));
if(version_flag){
print_version (NULL);
exit(0);
}
argc -= optind;
argv += optind;
ret = krb5_init_context (&context);
if (ret)
errx (1, "krb5_init_context failed: %d", ret);
ret = krb5_get_init_creds_opt_alloc (context, &opt);
if (ret)
krb5_err(context, 1, ret, "krb5_get_init_creds_opt_alloc");
krb5_get_init_creds_opt_set_tkt_life (opt, 300);
krb5_get_init_creds_opt_set_forwardable (opt, FALSE);
krb5_get_init_creds_opt_set_proxiable (opt, FALSE);
if (cred_cache_str) {
ret = krb5_cc_resolve(context, cred_cache_str, &id);
if (ret)
krb5_err (context, 1, ret, "krb5_cc_resolve");
} else {
ret = krb5_cc_gen_new(context, &krb5_mcc_ops, &id);
if (ret)
krb5_err (context, 1, ret, "krb5_cc_gen_new");
}
if (cred_cache_str == NULL) {
krb5_principal admin_principal = NULL;
krb5_creds cred;
if (admin_principal_str) {
ret = krb5_parse_name (context, admin_principal_str,
&admin_principal);
if (ret)
krb5_err (context, 1, ret, "krb5_parse_name");
} else if (argc == 1) {
ret = krb5_parse_name (context, argv[0], &admin_principal);
if (ret)
krb5_err (context, 1, ret, "krb5_parse_name");
} else {
ret = krb5_get_default_principal (context, &admin_principal);
if (ret)
krb5_err (context, 1, ret, "krb5_get_default_principal");
}
ret = krb5_get_init_creds_password (context,
&cred,
admin_principal,
NULL,
krb5_prompter_posix,
NULL,
0,
"kadmin/changepw",
opt);
switch (ret) {
case 0:
break;
case KRB5_LIBOS_PWDINTR :
return 1;
case KRB5KRB_AP_ERR_BAD_INTEGRITY :
case KRB5KRB_AP_ERR_MODIFIED :
krb5_errx(context, 1, "Password incorrect");
break;
default:
krb5_err(context, 1, ret, "krb5_get_init_creds");
}
krb5_get_init_creds_opt_free(opt);
ret = krb5_cc_initialize(context, id, admin_principal);
krb5_free_principal(context, admin_principal);
if (ret)
krb5_err(context, 1, ret, "krb5_cc_initialize");
ret = krb5_cc_store_cred(context, id, &cred);
if (ret)
krb5_err(context, 1, ret, "krb5_cc_store_cred");
krb5_free_cred_contents (context, &cred);
}
if (argc == 0) {
exit_value = change_password(context, NULL, id);
} else {
exit_value = 0;
while (argc-- > 0) {
ret = krb5_parse_name (context, argv[0], &principal);
if (ret)
krb5_err (context, 1, ret, "krb5_parse_name");
ret = change_password(context, principal, id);
if (ret)
exit_value = 1;
krb5_free_principal(context, principal);
argv++;
}
}
if (cred_cache_str == NULL) {
ret = krb5_cc_destroy(context, id);
if (ret)
krb5_err (context, 1, ret, "krb5_cc_destroy");
} else {
ret = krb5_cc_close(context, id);
if (ret)
krb5_err (context, 1, ret, "krb5_cc_close");
}
krb5_free_context (context);
return ret;
}