255 lines
6.7 KiB
C
255 lines
6.7 KiB
C
/* $NetBSD: change.c,v 1.1.1.1 2011/04/13 18:14:32 elric Exp $ */
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/*
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* Copyright (c) 1997-2005 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "ktutil_locl.h"
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__RCSID("$NetBSD: change.c,v 1.1.1.1 2011/04/13 18:14:32 elric Exp $");
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static krb5_error_code
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change_entry (krb5_keytab keytab,
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krb5_principal principal, krb5_kvno kvno,
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const char *realm, const char *admin_server, int server_port)
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{
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krb5_error_code ret;
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kadm5_config_params conf;
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void *kadm_handle;
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char *client_name;
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krb5_keyblock *keys;
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int num_keys;
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int i;
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ret = krb5_unparse_name (context, principal, &client_name);
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if (ret) {
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krb5_warn (context, ret, "krb5_unparse_name");
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return ret;
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}
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memset (&conf, 0, sizeof(conf));
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if(realm == NULL)
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realm = krb5_principal_get_realm(context, principal);
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conf.realm = strdup(realm);
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if (conf.realm == NULL) {
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free (client_name);
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krb5_set_error_message(context, ENOMEM, "malloc failed");
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return ENOMEM;
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}
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conf.mask |= KADM5_CONFIG_REALM;
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if (admin_server) {
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conf.admin_server = strdup(admin_server);
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if (conf.admin_server == NULL) {
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free(client_name);
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free(conf.realm);
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krb5_set_error_message(context, ENOMEM, "malloc failed");
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return ENOMEM;
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}
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conf.mask |= KADM5_CONFIG_ADMIN_SERVER;
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}
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if (server_port) {
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conf.kadmind_port = htons(server_port);
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conf.mask |= KADM5_CONFIG_KADMIND_PORT;
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}
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ret = kadm5_init_with_skey_ctx (context,
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client_name,
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keytab_string,
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KADM5_ADMIN_SERVICE,
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&conf, 0, 0,
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&kadm_handle);
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free(conf.admin_server);
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free(conf.realm);
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if (ret) {
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krb5_warn (context, ret,
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"kadm5_c_init_with_skey_ctx: %s:", client_name);
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free (client_name);
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return ret;
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}
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ret = kadm5_randkey_principal (kadm_handle, principal, &keys, &num_keys);
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kadm5_destroy (kadm_handle);
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if (ret) {
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krb5_warn(context, ret, "kadm5_randkey_principal: %s:", client_name);
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free (client_name);
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return ret;
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}
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free (client_name);
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for (i = 0; i < num_keys; ++i) {
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krb5_keytab_entry new_entry;
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new_entry.principal = principal;
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new_entry.timestamp = time (NULL);
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new_entry.vno = kvno + 1;
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new_entry.keyblock = keys[i];
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ret = krb5_kt_add_entry (context, keytab, &new_entry);
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if (ret)
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krb5_warn (context, ret, "krb5_kt_add_entry");
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krb5_free_keyblock_contents (context, &keys[i]);
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}
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return ret;
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}
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/*
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* loop over all the entries in the keytab (or those given) and change
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* their keys, writing the new keys
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*/
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struct change_set {
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krb5_principal principal;
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krb5_kvno kvno;
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};
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int
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kt_change (struct change_options *opt, int argc, char **argv)
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{
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krb5_error_code ret;
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krb5_keytab keytab;
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krb5_kt_cursor cursor;
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krb5_keytab_entry entry;
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int i, j, max;
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struct change_set *changeset;
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int errors = 0;
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if((keytab = ktutil_open_keytab()) == NULL)
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return 1;
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j = 0;
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max = 0;
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changeset = NULL;
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ret = krb5_kt_start_seq_get(context, keytab, &cursor);
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if(ret){
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krb5_warn(context, ret, "%s", keytab_string);
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goto out;
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}
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while((ret = krb5_kt_next_entry(context, keytab, &entry, &cursor)) == 0) {
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int add = 0;
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for (i = 0; i < j; ++i) {
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if (krb5_principal_compare (context, changeset[i].principal,
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entry.principal)) {
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if (changeset[i].kvno < entry.vno)
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changeset[i].kvno = entry.vno;
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break;
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}
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}
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if (i < j) {
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krb5_kt_free_entry (context, &entry);
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continue;
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}
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if (argc == 0) {
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add = 1;
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} else {
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for (i = 0; i < argc; ++i) {
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krb5_principal princ;
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ret = krb5_parse_name (context, argv[i], &princ);
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if (ret) {
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krb5_warn (context, ret, "%s", argv[i]);
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continue;
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}
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if (krb5_principal_compare (context, princ, entry.principal))
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add = 1;
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krb5_free_principal (context, princ);
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}
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}
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if (add) {
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if (j >= max) {
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void *tmp;
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max = max(max * 2, 1);
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tmp = realloc (changeset, max * sizeof(*changeset));
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if (tmp == NULL) {
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krb5_kt_free_entry (context, &entry);
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krb5_warnx (context, "realloc: out of memory");
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ret = ENOMEM;
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break;
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}
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changeset = tmp;
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}
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ret = krb5_copy_principal (context, entry.principal,
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&changeset[j].principal);
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if (ret) {
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krb5_warn (context, ret, "krb5_copy_principal");
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krb5_kt_free_entry (context, &entry);
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break;
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}
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changeset[j].kvno = entry.vno;
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++j;
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}
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krb5_kt_free_entry (context, &entry);
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}
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krb5_kt_end_seq_get(context, keytab, &cursor);
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if (ret == KRB5_KT_END) {
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ret = 0;
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for (i = 0; i < j; i++) {
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if (verbose_flag) {
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char *client_name;
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ret = krb5_unparse_name (context, changeset[i].principal,
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&client_name);
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if (ret) {
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krb5_warn (context, ret, "krb5_unparse_name");
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} else {
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printf("Changing %s kvno %d\n",
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client_name, changeset[i].kvno);
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free(client_name);
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}
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}
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ret = change_entry (keytab,
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changeset[i].principal, changeset[i].kvno,
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opt->realm_string,
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opt->admin_server_string,
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opt->server_port_integer);
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if (ret != 0)
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errors = 1;
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}
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} else
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errors = 1;
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for (i = 0; i < j; i++)
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krb5_free_principal (context, changeset[i].principal);
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free (changeset);
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out:
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krb5_kt_close(context, keytab);
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return errors;
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}
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