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125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/*
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* Copyright (c) 1997, 1998, 1999 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("$Id: srvcreate.c,v 1.3 1999/12/02 17:04:53 joda Exp $");
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/* convert a version 5 keytab to a version 4 srvtab */
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#ifndef KEYFILE
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#define KEYFILE "/etc/srvtab"
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#endif
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static char *srvtab = KEYFILE;
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static int help_flag;
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static int verbose;
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static struct getargs args[] = {
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{ "srvtab", 's', arg_string, &srvtab, "srvtab to create", "file" },
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{ "help", 'h', arg_flag, &help_flag },
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{ "verbose", 'v', arg_flag, &verbose },
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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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srvcreate(int argc, char **argv)
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{
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krb5_error_code ret;
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int optind = 0;
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int fd;
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krb5_kt_cursor cursor;
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krb5_keytab_entry entry;
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char service[100], instance[100], realm[100];
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int8_t kvno;
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if(getarg(args, num_args, argc, argv, &optind)){
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arg_printusage(args, num_args, "ktutil srvcreate", "");
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return 1;
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}
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if(help_flag){
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arg_printusage(args, num_args, "ktutil srvcreate", "");
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return 0;
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}
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argc -= optind;
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argv += optind;
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if (argc != 0) {
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arg_printusage(args, num_args, "ktutil srvcreate", "");
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return 1;
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}
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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, "krb5_kt_start_seq_get");
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return 1;
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}
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fd = open(srvtab, O_WRONLY |O_APPEND |O_CREAT, 0600);
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if(fd < 0){
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krb5_warn(context, errno, "%s", srvtab);
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return 1;
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}
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while((ret = krb5_kt_next_entry(context, keytab, &entry, &cursor)) == 0){
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ret = krb5_524_conv_principal(context, entry.principal,
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service, instance, realm);
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if(ret) {
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krb5_warn(context, ret, "krb5_524_conv_principal");
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close(fd);
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return 1;
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}
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if ( (entry.keyblock.keyvalue.length == 8) &&
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(entry.keyblock.keytype == ETYPE_DES_CBC_MD5) ) {
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if (verbose) {
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printf ("%s.%s@%s vno %d\n", service, instance, realm,
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entry.vno);
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}
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write(fd, service, strlen(service)+1);
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write(fd, instance, strlen(instance)+1);
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write(fd, realm, strlen(realm)+1);
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kvno = entry.vno;
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write(fd, &kvno, sizeof(kvno));
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write(fd, entry.keyblock. keyvalue.data, 8);
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}
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krb5_kt_free_entry(context, &entry);
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}
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close(fd);
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ret = krb5_kt_end_seq_get(context, keytab, &cursor);
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return ret;
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}
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