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
|
/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/krb5/os/hostream_profile.c - profile hostrealm module */
/*
* Copyright (C) 1990,1991,2002,2008,2009,2013 by the Massachusetts Institute
* of Technology. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDER 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.
*/
/*
* This file implements the built-in profile module for the hostrealm
* interface, which uses profile configuration to determine the local default
* realm or the authoritative realm of a host.
*/
#include "k5-int.h"
#include "os-proto.h"
#include <krb5/hostrealm_plugin.h>
/*
* Search progressively shorter suffixes of host in the [domain_realms] section
* of the profile to find the realm. For example, given a host a.b.c, try to
* match a.b.c, then .b.c, then b.c, then .c, then c. If we don't find a
* match, return success but set *realm_out to NULL.
*/
static krb5_error_code
profile_host_realm(krb5_context context, krb5_hostrealm_moddata data,
const char *host, char ***realms_out)
{
krb5_error_code ret;
const char *p;
char *prof_realm;
*realms_out = NULL;
/* Don't look up IP addresses in [domain_realms]. */
if (k5_is_numeric_address(host))
return KRB5_PLUGIN_NO_HANDLE;
/* Look for the host and each suffix in the [domain_realms] section. */
for (p = host; p != NULL; p = (*p == '.') ? p + 1 : strchr(p, '.')) {
ret = profile_get_string(context->profile, KRB5_CONF_DOMAIN_REALM, p,
NULL, NULL, &prof_realm);
if (ret)
return ret;
if (prof_realm != NULL) {
ret = k5_make_realmlist(prof_realm, realms_out);
profile_release_string(prof_realm);
return ret;
}
}
return KRB5_PLUGIN_NO_HANDLE;
}
/* Look up the default_realm variable in the [libdefaults] section of the
* profile. */
static krb5_error_code
profile_default_realm(krb5_context context, krb5_hostrealm_moddata data,
char ***realms_out)
{
krb5_error_code ret;
char *prof_realm;
*realms_out = NULL;
ret = profile_get_string(context->profile, KRB5_CONF_LIBDEFAULTS,
KRB5_CONF_DEFAULT_REALM, NULL, NULL, &prof_realm);
if (ret)
return ret;
if (prof_realm == NULL)
return KRB5_PLUGIN_NO_HANDLE;
ret = k5_make_realmlist(prof_realm, realms_out);
profile_release_string(prof_realm);
return ret;
}
static void
profile_free_realmlist(krb5_context context, krb5_hostrealm_moddata data,
char **list)
{
krb5_free_host_realm(context, list);
}
krb5_error_code
hostrealm_profile_initvt(krb5_context context, int maj_ver, int min_ver,
krb5_plugin_vtable vtable)
{
krb5_hostrealm_vtable vt = (krb5_hostrealm_vtable)vtable;
vt->name = "profile";
vt->host_realm = profile_host_realm;
vt->default_realm = profile_default_realm;
vt->free_list = profile_free_realmlist;
return 0;
}
|
