1 /* $NetBSD: copy.c,v 1.2 2017/01/28 21:31:44 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "ktutil_locl.h"
37
38 __RCSID("$NetBSD: copy.c,v 1.2 2017/01/28 21:31:44 christos Exp $");
39
40
41 static krb5_boolean
compare_keyblock(const krb5_keyblock * a,const krb5_keyblock * b)42 compare_keyblock(const krb5_keyblock *a, const krb5_keyblock *b)
43 {
44 if(a->keytype != b->keytype ||
45 a->keyvalue.length != b->keyvalue.length ||
46 memcmp(a->keyvalue.data, b->keyvalue.data, a->keyvalue.length) != 0)
47 return FALSE;
48 return TRUE;
49 }
50
51 int
kt_copy(void * opt,int argc,char ** argv)52 kt_copy (void *opt, int argc, char **argv)
53 {
54 krb5_error_code ret;
55 krb5_keytab src_keytab, dst_keytab;
56 krb5_kt_cursor cursor;
57 krb5_keytab_entry entry, dummy;
58 const char *from = argv[0];
59 const char *to = argv[1];
60
61 ret = krb5_kt_resolve (context, from, &src_keytab);
62 if (ret) {
63 krb5_warn (context, ret, "resolving src keytab `%s'", from);
64 return 1;
65 }
66
67 ret = krb5_kt_resolve (context, to, &dst_keytab);
68 if (ret) {
69 krb5_kt_close (context, src_keytab);
70 krb5_warn (context, ret, "resolving dst keytab `%s'", to);
71 return 1;
72 }
73
74 ret = krb5_kt_start_seq_get (context, src_keytab, &cursor);
75 if (ret) {
76 krb5_warn (context, ret, "krb5_kt_start_seq_get %s", keytab_string);
77 goto out;
78 }
79
80 if (verbose_flag)
81 fprintf(stderr, "copying %s to %s\n", from, to);
82
83 while((ret = krb5_kt_next_entry(context, src_keytab,
84 &entry, &cursor)) == 0) {
85 char *name_str;
86 char *etype_str;
87 ret = krb5_unparse_name (context, entry.principal, &name_str);
88 if(ret) {
89 krb5_warn(context, ret, "krb5_unparse_name");
90 name_str = NULL; /* XXX */
91 }
92 ret = krb5_enctype_to_string(context, entry.keyblock.keytype, &etype_str);
93 if(ret) {
94 krb5_warn(context, ret, "krb5_enctype_to_string");
95 etype_str = NULL; /* XXX */
96 }
97 ret = krb5_kt_get_entry(context, dst_keytab,
98 entry.principal,
99 entry.vno,
100 entry.keyblock.keytype,
101 &dummy);
102 if(ret == 0) {
103 /* this entry is already in the new keytab, so no need to
104 copy it; if the keyblocks are not the same, something
105 is weird, so complain about that */
106 if(!compare_keyblock(&entry.keyblock, &dummy.keyblock)) {
107 krb5_warnx(context, "entry with different keyvalue "
108 "already exists for %s, keytype %s, kvno %d",
109 name_str, etype_str, entry.vno);
110 }
111 krb5_kt_free_entry(context, &dummy);
112 krb5_kt_free_entry (context, &entry);
113 free(name_str);
114 free(etype_str);
115 continue;
116 } else if(ret != KRB5_KT_NOTFOUND) {
117 krb5_warn (context, ret, "%s: fetching %s/%s/%u",
118 to, name_str, etype_str, entry.vno);
119 krb5_kt_free_entry (context, &entry);
120 free(name_str);
121 free(etype_str);
122 break;
123 }
124 if (verbose_flag)
125 fprintf (stderr, "copying %s, keytype %s, kvno %d\n", name_str,
126 etype_str, entry.vno);
127 ret = krb5_kt_add_entry (context, dst_keytab, &entry);
128 krb5_kt_free_entry (context, &entry);
129 if (ret) {
130 krb5_warn (context, ret, "%s: adding %s/%s/%u",
131 to, name_str, etype_str, entry.vno);
132 free(name_str);
133 free(etype_str);
134 break;
135 }
136 free(name_str);
137 free(etype_str);
138 }
139 krb5_kt_end_seq_get (context, src_keytab, &cursor);
140
141 out:
142 krb5_kt_close (context, src_keytab);
143 krb5_kt_close (context, dst_keytab);
144 return ret != 0;
145 }
146