1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/*
* Copyright (c) 1997, 1998, 1999 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "ktutil_locl.h"
RCSID("$Id: srvcreate.c,v 1.3 1999/12/02 17:04:53 joda Exp $");
/* convert a version 5 keytab to a version 4 srvtab */
#ifndef KEYFILE
#define KEYFILE "/etc/srvtab"
#endif
static char *srvtab = KEYFILE;
static int help_flag;
static int verbose;
static struct getargs args[] = {
{ "srvtab", 's', arg_string, &srvtab, "srvtab to create", "file" },
{ "help", 'h', arg_flag, &help_flag },
{ "verbose", 'v', arg_flag, &verbose },
};
static int num_args = sizeof(args) / sizeof(args[0]);
int
srvcreate(int argc, char **argv)
{
krb5_error_code ret;
int optind = 0;
int fd;
krb5_kt_cursor cursor;
krb5_keytab_entry entry;
char service[100], instance[100], realm[100];
int8_t kvno;
if(getarg(args, num_args, argc, argv, &optind)){
arg_printusage(args, num_args, "ktutil srvcreate", "");
return 1;
}
if(help_flag){
arg_printusage(args, num_args, "ktutil srvcreate", "");
return 0;
}
argc -= optind;
argv += optind;
if (argc != 0) {
arg_printusage(args, num_args, "ktutil srvcreate", "");
return 1;
}
ret = krb5_kt_start_seq_get(context, keytab, &cursor);
if(ret){
krb5_warn(context, ret, "krb5_kt_start_seq_get");
return 1;
}
fd = open(srvtab, O_WRONLY |O_APPEND |O_CREAT, 0600);
if(fd < 0){
krb5_warn(context, errno, "%s", srvtab);
return 1;
}
while((ret = krb5_kt_next_entry(context, keytab, &entry, &cursor)) == 0){
ret = krb5_524_conv_principal(context, entry.principal,
service, instance, realm);
if(ret) {
krb5_warn(context, ret, "krb5_524_conv_principal");
close(fd);
return 1;
}
if ( (entry.keyblock.keyvalue.length == 8) &&
(entry.keyblock.keytype == ETYPE_DES_CBC_MD5) ) {
if (verbose) {
printf ("%s.%s@%s vno %d\n", service, instance, realm,
entry.vno);
}
write(fd, service, strlen(service)+1);
write(fd, instance, strlen(instance)+1);
write(fd, realm, strlen(realm)+1);
kvno = entry.vno;
write(fd, &kvno, sizeof(kvno));
write(fd, entry.keyblock. keyvalue.data, 8);
}
krb5_kt_free_entry(context, &entry);
}
close(fd);
ret = krb5_kt_end_seq_get(context, keytab, &cursor);
return ret;
}
|
