admin/rename.c

   1 /*
   2  * Copyright (c) 2001-2004 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("$Id$");
  37
  38 int
  39 kt_rename(void *opt, 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
  47     ret = krb5_parse_name(context, argv[0], &from_princ);
  48     if(ret != 0) {
  49         krb5_warn(context, ret, "%s", argv[0]);
  50         return 1;
  51     }
  52
  53     ret = krb5_parse_name(context, argv[1], &to_princ);
  54     if(ret != 0) {
  55         krb5_free_principal(context, from_princ);
  56         krb5_warn(context, ret, "%s", argv[1]);
  57         return 1;
  58     }
  59
  60     if((keytab = ktutil_open_keytab()) == NULL) {
  61         krb5_free_principal(context, from_princ);
  62         krb5_free_principal(context, to_princ);
  63         return 1;
  64     }
  65
  66     ret = krb5_kt_start_seq_get(context, keytab, &cursor);
  67     if(ret) {
  68         krb5_kt_close(context, keytab);
  69         krb5_free_principal(context, from_princ);
  70         krb5_free_principal(context, to_princ);
  71         return 1;
  72     }
  73     while(1) {
  74         ret = krb5_kt_next_entry(context, keytab, &entry, &cursor);
  75         if(ret != 0) {
  76             if(ret != KRB5_CC_END && ret != KRB5_KT_END)
  77                 krb5_warn(context, ret, "getting entry from keytab");
  78             else
  79                 ret = 0;
  80             break;
  81         }
  82         if(krb5_principal_compare(context, entry.principal, from_princ)) {
  83             krb5_free_principal(context, entry.principal);
  84             entry.principal = to_princ;
  85             ret = krb5_kt_add_entry(context, keytab, &entry);
  86             if(ret) {
  87                 entry.principal = NULL;
  88                 krb5_kt_free_entry(context, &entry);
  89                 krb5_warn(context, ret, "adding entry");
  90                 break;
  91             }
  92             entry.principal = from_princ;
  93             ret = krb5_kt_remove_entry(context, keytab, &entry);
  94             if(ret) {
  95                 entry.principal = NULL;
  96                 krb5_kt_free_entry(context, &entry);
  97                 krb5_warn(context, ret, "removing entry");
  98                 break;
  99             }
 100             entry.principal = NULL;
 101         }
 102         krb5_kt_free_entry(context, &entry);
 103     }
 104     krb5_kt_end_seq_get(context, keytab, &cursor);
 105
 106     krb5_free_principal(context, from_princ);
 107     krb5_free_principal(context, to_princ);
 108
 109     return ret != 0;
 110 }
 111