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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/krb5/krb/princ_comp.c - Compare two principals for equality */
/*
* Copyright 1990,1991,2007 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
#include "k5-int.h"
#include "k5-unicode.h"
static krb5_boolean
realm_compare_flags(krb5_context context,
krb5_const_principal princ1,
krb5_const_principal princ2,
int flags)
{
const krb5_data *realm1 = &princ1->realm;
const krb5_data *realm2 = &princ2->realm;
if (realm1->length != realm2->length)
return FALSE;
if (realm1->length == 0)
return TRUE;
return (flags & KRB5_PRINCIPAL_COMPARE_CASEFOLD) ?
(strncasecmp(realm1->data, realm2->data, realm2->length) == 0) :
(memcmp(realm1->data, realm2->data, realm2->length) == 0);
}
krb5_boolean KRB5_CALLCONV
krb5_realm_compare(krb5_context context, krb5_const_principal princ1, krb5_const_principal princ2)
{
return realm_compare_flags(context, princ1, princ2, 0);
}
static krb5_error_code
upn_to_principal(krb5_context context,
krb5_const_principal princ,
krb5_principal *upn)
{
char *unparsed_name;
krb5_error_code code;
code = krb5_unparse_name_flags(context, princ,
KRB5_PRINCIPAL_UNPARSE_NO_REALM,
&unparsed_name);
if (code) {
*upn = NULL;
return code;
}
code = krb5_parse_name(context, unparsed_name, upn);
free(unparsed_name);
return code;
}
krb5_boolean KRB5_CALLCONV
krb5_principal_compare_flags(krb5_context context,
krb5_const_principal princ1,
krb5_const_principal princ2,
int flags)
{
krb5_int32 i;
unsigned int utf8 = (flags & KRB5_PRINCIPAL_COMPARE_UTF8) != 0;
unsigned int casefold = (flags & KRB5_PRINCIPAL_COMPARE_CASEFOLD) != 0;
krb5_principal upn1 = NULL;
krb5_principal upn2 = NULL;
krb5_boolean ret = FALSE;
if (flags & KRB5_PRINCIPAL_COMPARE_ENTERPRISE) {
/* Treat UPNs as if they were real principals */
if (princ1->type == KRB5_NT_ENTERPRISE_PRINCIPAL) {
if (upn_to_principal(context, princ1, &upn1) == 0)
princ1 = upn1;
}
if (princ2->type == KRB5_NT_ENTERPRISE_PRINCIPAL) {
if (upn_to_principal(context, princ2, &upn2) == 0)
princ2 = upn2;
}
}
if (princ1->length != princ2->length)
goto out;
if ((flags & KRB5_PRINCIPAL_COMPARE_IGNORE_REALM) == 0 &&
!realm_compare_flags(context, princ1, princ2, flags))
goto out;
for (i = 0; i < princ1->length; i++) {
const krb5_data *p1 = &princ1->data[i];
const krb5_data *p2 = &princ2->data[i];
krb5_boolean eq;
if (casefold) {
if (utf8)
eq = (krb5int_utf8_normcmp(p1, p2, KRB5_UTF8_CASEFOLD) == 0);
else
eq = (p1->length == p2->length
&& strncasecmp(p1->data, p2->data, p2->length) == 0);
} else
eq = data_eq(*p1, *p2);
if (!eq)
goto out;
}
ret = TRUE;
out:
if (upn1 != NULL)
krb5_free_principal(context, upn1);
if (upn2 != NULL)
krb5_free_principal(context, upn2);
return ret;
}
krb5_boolean KRB5_CALLCONV krb5_is_referral_realm(const krb5_data *r)
{
/*
* Check for a match with KRB5_REFERRAL_REALM. Currently this relies
* on that string constant being zero-length. (Unlike principal realm
* names, KRB5_REFERRAL_REALM is known to be a string.)
*/
assert(strlen(KRB5_REFERRAL_REALM)==0);
if (r->length==0)
return TRUE;
else
return FALSE;
}
krb5_boolean KRB5_CALLCONV
krb5_principal_compare(krb5_context context,
krb5_const_principal princ1,
krb5_const_principal princ2)
{
return krb5_principal_compare_flags(context, princ1, princ2, 0);
}
krb5_boolean KRB5_CALLCONV
krb5_principal_compare_any_realm(krb5_context context,
krb5_const_principal princ1,
krb5_const_principal princ2)
{
return krb5_principal_compare_flags(context, princ1, princ2, KRB5_PRINCIPAL_COMPARE_IGNORE_REALM);
}
|
