freebsd-dev/crypto/heimdal/admin/change.c

233 lines
6.3 KiB
C

/*
* Copyright (c) 1997 - 2001 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 "ktutil_locl.h"
RCSID("$Id: change.c,v 1.4 2001/07/23 09:46:40 joda Exp $");
static void
change_entry (krb5_context context, krb5_keytab keytab,
krb5_keytab_entry *entry,
const char *realm, const char *admin_server, int server_port)
{
krb5_error_code ret;
kadm5_config_params conf;
void *kadm_handle;
char *client_name;
krb5_keyblock *keys;
int num_keys;
int i;
ret = krb5_unparse_name (context, entry->principal, &client_name);
if (ret) {
krb5_warn (context, ret, "krb5_unparse_name");
return;
}
memset (&conf, 0, sizeof(conf));
if(realm)
conf.realm = (char *)realm;
else
conf.realm = *krb5_princ_realm (context, entry->principal);
conf.mask |= KADM5_CONFIG_REALM;
if (admin_server) {
conf.admin_server = (char *)admin_server;
conf.mask |= KADM5_CONFIG_ADMIN_SERVER;
}
if (server_port) {
conf.kadmind_port = htons(server_port);
conf.mask |= KADM5_CONFIG_KADMIND_PORT;
}
ret = kadm5_init_with_skey_ctx (context,
client_name,
keytab_string,
KADM5_ADMIN_SERVICE,
&conf, 0, 0,
&kadm_handle);
free (client_name);
if (ret) {
krb5_warn (context, ret, "kadm5_c_init_with_skey_ctx");
return;
}
ret = kadm5_randkey_principal (kadm_handle, entry->principal,
&keys, &num_keys);
kadm5_destroy (kadm_handle);
if (ret) {
krb5_warn(context, ret, "kadm5_randkey_principal");
return;
}
for (i = 0; i < num_keys; ++i) {
krb5_keytab_entry new_entry;
new_entry = *entry;
new_entry.timestamp = time (NULL);
++new_entry.vno;
new_entry.keyblock = keys[i];
ret = krb5_kt_add_entry (context, keytab, &new_entry);
if (ret)
krb5_warn (context, ret, "krb5_kt_add_entry");
krb5_free_keyblock_contents (context, &keys[i]);
}
}
/*
* loop over all the entries in the keytab (or those given) and change
* their keys, writing the new keys
*/
int
kt_change (int argc, char **argv)
{
krb5_error_code ret;
krb5_keytab keytab;
krb5_kt_cursor cursor;
krb5_keytab_entry entry;
char *realm = NULL;
char *admin_server = NULL;
int server_port = 0;
int help_flag = 0;
int optind = 0;
int j, max;
krb5_principal *princs;
struct getargs args[] = {
{ "realm", 'r', arg_string, NULL,
"realm to use", "realm"
},
{ "admin-server", 'a', arg_string, NULL,
"server to contact", "host"
},
{ "server-port", 's', arg_integer, NULL,
"port to contact", "port number"
},
{ "help", 'h', arg_flag, NULL }
};
args[0].value = &realm;
args[1].value = &admin_server;
args[2].value = &server_port;
args[3].value = &help_flag;
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optind)
|| help_flag) {
arg_printusage(args, sizeof(args) / sizeof(args[0]),
"ktutil change", "principal...");
return 1;
}
if((keytab = ktutil_open_keytab()) == NULL)
return 1;
j = 0;
max = 10;
princs = malloc (max * sizeof(*princs));
if (princs == NULL) {
krb5_warnx (context, "malloc: out of memory");
goto out;
}
ret = krb5_kt_start_seq_get(context, keytab, &cursor);
if(ret){
krb5_warn(context, ret, "krb5_kt_start_seq_get %s", keytab_string);
goto out;
}
while((ret = krb5_kt_next_entry(context, keytab, &entry, &cursor)) == 0) {
int i;
int done = 0;
for (i = 0; i < j; ++i)
if (krb5_principal_compare (context, princs[i],
entry.principal))
break;
if (i < j)
continue;
if (optind == argc) {
change_entry (context, keytab, &entry, realm, admin_server,
server_port);
done = 1;
} else {
for (i = optind; i < argc; ++i) {
krb5_principal princ;
ret = krb5_parse_name (context, argv[i], &princ);
if (ret) {
krb5_warn (context, ret, "krb5_parse_name %s", argv[i]);
continue;
}
if (krb5_principal_compare (context, princ, entry.principal)) {
change_entry (context, keytab, &entry,
realm, admin_server, server_port);
done = 1;
}
krb5_free_principal (context, princ);
}
}
if (done) {
if (j >= max) {
void *tmp;
max *= 2;
tmp = realloc (princs, max * sizeof(*princs));
if (tmp == NULL) {
krb5_kt_free_entry (context, &entry);
krb5_warnx (context, "realloc: out of memory");
break;
}
princs = tmp;
}
ret = krb5_copy_principal (context, entry.principal, &princs[j]);
if (ret) {
krb5_warn (context, ret, "krb5_copy_principal");
krb5_kt_free_entry (context, &entry);
break;
}
++j;
}
krb5_kt_free_entry (context, &entry);
}
while (j-- > 0)
krb5_free_principal (context, princs[j]);
free (princs);
ret = krb5_kt_end_seq_get(context, keytab, &cursor);
out:
krb5_kt_close(context, keytab);
return 0;
}