crypto/heimdal-0.6.3/admin/rename.c

   1 /*
   2  * Copyright (c) 2001 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "ktutil_locl.h"
  35
  36 RCSID("$Id: rename.c,v 1.1 2001/07/23 10:17:32 joda Exp $");
  37
  38 int
  39 kt_rename(int argc, char **argv)
  40 {
  41     krb5_error_code ret = 0;
  42     krb5_keytab_entry entry;
  43     krb5_keytab keytab;
  44     krb5_kt_cursor cursor;
  45     krb5_principal from_princ, to_princ;
  46     int help_flag = 0;
  47
  48     struct getargs args[] = {
  49         { "help", 'h', arg_flag, NULL }
  50     };
  51     int num_args = sizeof(args) / sizeof(args[0]);
  52     int optind = 0;
  53     int i = 0;
  54
  55     args[i++].value = &help_flag;
  56     if(getarg(args, num_args, argc, argv, &optind)) {
  57         arg_printusage(args, num_args, "ktutil rename", "from to");
  58         return 1;
  59     }
  60     if(help_flag) {
  61         arg_printusage(args, num_args, "ktutil rename", "from to");
  62         return 0;
  63     }
  64     argv += optind;
  65     argc -= optind;
  66     if(argc != 2) {
  67         arg_printusage(args, num_args, "ktutil rename", "from to");
  68         return 0;
  69     }
  70
  71     ret = krb5_parse_name(context, argv[0], &from_princ);
  72     if(ret != 0) {
  73         krb5_warn(context, ret, "%s", argv[0]);
  74         return 0;
  75     }
  76
  77     ret = krb5_parse_name(context, argv[1], &to_princ);
  78     if(ret != 0) {
  79         krb5_free_principal(context, from_princ);
  80         krb5_warn(context, ret, "%s", argv[1]);
  81         return 0;
  82     }
  83
  84     if((keytab = ktutil_open_keytab()) == NULL) {
  85         krb5_free_principal(context, from_princ);
  86         krb5_free_principal(context, to_princ);
  87         return 1;
  88     }
  89
  90     ret = krb5_kt_start_seq_get(context, keytab, &cursor);
  91     if(ret) {
  92         krb5_kt_close(context, keytab);
  93         krb5_free_principal(context, from_princ);
  94         krb5_free_principal(context, to_princ);
  95         return 1;
  96     }
  97     while(1) {
  98         ret = krb5_kt_next_entry(context, keytab, &entry, &cursor);
  99         if(ret != 0) {
 100             if(ret != KRB5_CC_END && ret != KRB5_KT_END)
 101                 krb5_warn(context, ret, "getting entry from keytab");
 102             break;
 103         }
 104         if(krb5_principal_compare(context, entry.principal, from_princ)) {
 105             krb5_free_principal(context, entry.principal);
 106             entry.principal = to_princ;
 107             ret = krb5_kt_add_entry(context, keytab, &entry);
 108             if(ret) {
 109                 entry.principal = NULL;
 110                 krb5_kt_free_entry(context, &entry);
 111                 krb5_warn(context, ret, "adding entry");
 112                 break;
 113             }
 114             entry.principal = from_princ;
 115             ret = krb5_kt_remove_entry(context, keytab, &entry);
 116             if(ret) {
 117                 entry.principal = NULL;
 118                 krb5_kt_free_entry(context, &entry);
 119                 krb5_warn(context, ret, "removing entry");
 120                 break;
 121             }
 122             entry.principal = NULL;
 123         }
 124         krb5_kt_free_entry(context, &entry);
 125     }
 126     krb5_kt_end_seq_get(context, keytab, &cursor);
 127
 128     krb5_free_principal(context, from_princ);
 129     krb5_free_principal(context, to_princ);
 130
 131     return 0;
 132 }
 133