rename.c revision 178826 
1/*
2 * Copyright (c) 2001-2004 Kungliga Tekniska H�gskolan
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
36RCSID("$Id: rename.c 14260 2004-09-23 14:45:29Z joda $");
37
38int
39kt_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
112