rename.c revision 90926 
1/*
2 * Copyright (c) 2001 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,v 1.1 2001/07/23 10:17:32 joda Exp $");
37
38int
39kt_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
134