214 lines
6.6 KiB
C
214 lines
6.6 KiB
C
/*
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* Copyright (c) 1999 - 2001 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 KTH nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY KTH AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL KTH OR ITS CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* Converts a database from version 0.0* to 0.1. This is done by
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* making three copies of each DES key (DES-CBC-CRC, DES-CBC-MD4, and
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* DES-CBC-MD5).
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*
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* Use with care.
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*/
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#include "hdb_locl.h"
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#include <getarg.h>
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#include <err.h>
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RCSID("$Id: convert_db.c,v 1.12 2001/02/20 01:44:53 assar Exp $");
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static krb5_error_code
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update_keytypes(krb5_context context, HDB *db, hdb_entry *entry, void *data)
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{
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int i;
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int n = 0;
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Key *k;
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int save_len;
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Key *save_val;
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HDB *new = data;
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krb5_error_code ret;
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for(i = 0; i < entry->keys.len; i++)
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if(entry->keys.val[i].key.keytype == KEYTYPE_DES)
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n += 2;
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else if(entry->keys.val[i].key.keytype == KEYTYPE_DES3)
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n += 1;
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k = malloc(sizeof(*k) * (entry->keys.len + n));
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n = 0;
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for(i = 0; i < entry->keys.len; i++) {
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copy_Key(&entry->keys.val[i], &k[n]);
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if(entry->keys.val[i].key.keytype == KEYTYPE_DES) {
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copy_Key(&entry->keys.val[i], &k[n+1]);
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k[n+1].key.keytype = ETYPE_DES_CBC_MD4;
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copy_Key(&entry->keys.val[i], &k[n+2]);
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k[n+2].key.keytype = ETYPE_DES_CBC_MD5;
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n += 2;
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}
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else if(entry->keys.val[i].key.keytype == KEYTYPE_DES3) {
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copy_Key(&entry->keys.val[i], &k[n+1]);
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k[n+1].key.keytype = ETYPE_DES3_CBC_MD5;
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n += 1;
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}
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n++;
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}
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save_len = entry->keys.len;
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save_val = entry->keys.val;
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entry->keys.len = n;
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entry->keys.val = k;
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ret = new->store(context, new, HDB_F_REPLACE, entry);
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entry->keys.len = save_len;
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entry->keys.val = save_val;
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for(i = 0; i < n; i++)
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free_Key(&k[i]);
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free(k);
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return 0;
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}
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static krb5_error_code
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update_version2(krb5_context context, HDB *db, hdb_entry *entry, void *data)
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{
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HDB *new = data;
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if(!db->master_key_set) {
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int i;
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for(i = 0; i < entry->keys.len; i++) {
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free(entry->keys.val[i].mkvno);
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entry->keys.val[i].mkvno = NULL;
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}
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}
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new->store(context, new, HDB_F_REPLACE, entry);
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return 0;
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}
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char *old_database = HDB_DEFAULT_DB;
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char *new_database = HDB_DEFAULT_DB ".new";
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char *mkeyfile;
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int update_version;
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int help_flag;
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int version_flag;
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struct getargs args[] = {
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{ "old-database", 0, arg_string, &old_database,
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"name of database to convert", "file" },
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{ "new-database", 0, arg_string, &new_database,
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"name of converted database", "file" },
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{ "master-key", 0, arg_string, &mkeyfile,
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"v5 master key file", "file" },
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{ "update-version", 0, arg_flag, &update_version,
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"update the database to the current version" },
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{ "help", 'h', arg_flag, &help_flag },
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{ "version", 0, arg_flag, &version_flag }
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};
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static int num_args = sizeof(args) / sizeof(args[0]);
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int
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main(int argc, char **argv)
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{
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krb5_error_code ret;
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krb5_context context;
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HDB *db, *new;
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int optind = 0;
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int master_key_set = 0;
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setprogname(argv[0]);
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if(getarg(args, num_args, argc, argv, &optind))
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krb5_std_usage(1, args, num_args);
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if(help_flag)
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krb5_std_usage(0, args, num_args);
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if(version_flag){
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print_version(NULL);
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exit(0);
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}
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ret = krb5_init_context(&context);
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if(ret != 0)
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errx(1, "krb5_init_context failed: %d", ret);
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ret = hdb_create(context, &db, old_database);
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if(ret != 0)
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krb5_err(context, 1, ret, "hdb_create");
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ret = hdb_set_master_keyfile(context, db, mkeyfile);
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if (ret)
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krb5_err(context, 1, ret, "hdb_set_master_keyfile");
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master_key_set = 1;
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ret = hdb_create(context, &new, new_database);
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if(ret != 0)
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krb5_err(context, 1, ret, "hdb_create");
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if (master_key_set) {
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ret = hdb_set_master_keyfile(context, new, mkeyfile);
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if (ret)
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krb5_err(context, 1, ret, "hdb_set_master_keyfile");
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}
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ret = db->open(context, db, O_RDONLY, 0);
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if(ret == HDB_ERR_BADVERSION) {
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krb5_data tag;
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krb5_data version;
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int foo;
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unsigned ver;
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tag.data = HDB_DB_FORMAT_ENTRY;
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tag.length = strlen(tag.data);
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ret = (*db->_get)(context, db, tag, &version);
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if(ret)
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krb5_errx(context, 1, "database is wrong version, "
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"but couldn't find version key (%s)",
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HDB_DB_FORMAT_ENTRY);
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foo = sscanf(version.data, "%u", &ver);
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krb5_data_free (&version);
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if(foo != 1)
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krb5_errx(context, 1, "database version is not a number");
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if(ver == 1 && HDB_DB_FORMAT == 2) {
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krb5_warnx(context, "will upgrade database from version %d to %d",
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ver, HDB_DB_FORMAT);
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krb5_warnx(context, "rerun to do other conversions");
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update_version = 1;
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} else
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krb5_errx(context, 1,
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"don't know how to upgrade from version %d to %d",
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ver, HDB_DB_FORMAT);
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} else if(ret)
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krb5_err(context, 1, ret, "%s", old_database);
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ret = new->open(context, new, O_CREAT|O_EXCL|O_RDWR, 0600);
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if(ret)
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krb5_err(context, 1, ret, "%s", new_database);
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if(update_version)
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ret = hdb_foreach(context, db, 0, update_version2, new);
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else
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ret = hdb_foreach(context, db, 0, update_keytypes, new);
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if(ret != 0)
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krb5_err(context, 1, ret, "hdb_foreach");
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db->close(context, db);
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new->close(context, new);
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krb5_warnx(context, "wrote converted database to `%s'", new_database);
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return 0;
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}
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