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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
* Copyright (c) 2003 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 KTH 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 KTH AND ITS 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 KTH OR ITS 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 "krb5_locl.h"
#include <getarg.h>
#include <err.h>
char localname[1024];
static size_t lname_size = sizeof (localname);
static int lname_size_arg = 0;
static int simple_flag = 0;
static int verbose_flag = 0;
static int version_flag = 0;
static int help_flag = 0;
static struct getargs args[] = {
{"lname-size", 0, arg_integer, &lname_size_arg,
"set localname size (0 means use default, must be 0..1023)", "integer" },
{"simple", 0, arg_flag, &simple_flag, /* Used for scripting */
"map the given principal and print the resulting localname", NULL },
{"verbose", 0, arg_flag, &verbose_flag,
"print the actual principal name as well as the localname", NULL },
{"version", 0, arg_flag, &version_flag,
"print version", NULL },
{"help", 0, arg_flag, &help_flag,
NULL, NULL }
};
static void
test_alname(krb5_context context, krb5_const_realm realm,
const char *user, const char *inst,
const char *localuser, int ok)
{
krb5_principal p;
krb5_error_code ret;
char *princ;
ret = krb5_make_principal(context, &p, realm, user, inst, NULL);
if (ret)
krb5_err(context, 1, ret, "krb5_build_principal");
ret = krb5_unparse_name(context, p, &princ);
if (ret)
krb5_err(context, 1, ret, "krb5_unparse_name");
ret = krb5_aname_to_localname(context, p, lname_size, localname);
krb5_free_principal(context, p);
if (ret) {
if (!ok) {
free(princ);
return;
}
krb5_err(context, 1, ret, "krb5_aname_to_localname: %s -> %s",
princ, localuser);
}
free(princ);
if (strcmp(localname, localuser) != 0) {
if (ok)
errx(1, "compared failed %s != %s (should have succeded)",
localname, localuser);
} else {
if (!ok)
errx(1, "compared failed %s == %s (should have failed)",
localname, localuser);
}
}
static void
usage (int ret)
{
arg_printusage (args,
sizeof(args)/sizeof(*args),
NULL,
"");
exit (ret);
}
int
main(int argc, char **argv)
{
krb5_context context;
krb5_error_code ret;
krb5_realm realm;
int optidx = 0;
char *user;
setprogname(argv[0]);
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
usage(1);
if (help_flag)
usage (0);
if(version_flag){
print_version(NULL);
exit(0);
}
argc -= optidx;
argv += optidx;
ret = krb5_init_context(&context);
if (ret)
errx (1, "krb5_init_context failed: %d", ret);
if (simple_flag) {
krb5_principal princ;
char *unparsed;
int status = 0;
/* Map then print the result and exit */
if (argc != 1)
errx(1, "One argument is required and it must be a principal name");
ret = krb5_parse_name(context, argv[0], &princ);
if (ret)
krb5_err(context, 1, ret, "krb5_build_principal");
ret = krb5_unparse_name(context, princ, &unparsed);
if (ret)
krb5_err(context, 1, ret, "krb5_unparse_name");
if (lname_size_arg > 0 && lname_size_arg < 1024)
lname_size = lname_size_arg;
else if (lname_size_arg != 0)
errx(1, "local name size must be between 0 and 1023 (inclusive)");
ret = krb5_aname_to_localname(context, princ, lname_size, localname);
if (ret == KRB5_NO_LOCALNAME) {
if (verbose_flag)
fprintf(stderr, "No mapping obtained for %s\n", unparsed);
exit(1);
}
switch (ret) {
case KRB5_PLUGIN_NO_HANDLE:
fprintf(stderr, "Error: KRB5_PLUGIN_NO_HANDLE leaked!\n");
status = 2;
break;
case KRB5_CONFIG_NOTENUFSPACE:
fprintf(stderr, "Error: lname-size (%lu) too small\n",
(long unsigned)lname_size);
status = 3;
break;
case 0:
if (verbose_flag)
printf("%s ", unparsed);
printf("%s\n", localname);
break;
default:
krb5_err(context, 4, ret, "krb5_aname_to_localname");
break;
}
free(unparsed);
krb5_free_principal(context, princ);
krb5_free_context(context);
exit(status);
}
if (argc != 1)
errx(1, "first argument should be a local user that is in root .k5login");
user = argv[0];
ret = krb5_get_default_realm(context, &realm);
if (ret)
krb5_err(context, 1, ret, "krb5_get_default_realm");
test_alname(context, realm, user, NULL, user, 1);
test_alname(context, realm, user, "root", "root", 1);
test_alname(context, "FOO.BAR.BAZ.KAKA", user, NULL, user, 0);
test_alname(context, "FOO.BAR.BAZ.KAKA", user, "root", "root", 0);
test_alname(context, realm, user, NULL,
"not-same-as-user", 0);
test_alname(context, realm, user, "root",
"not-same-as-user", 0);
test_alname(context, "FOO.BAR.BAZ.KAKA", user, NULL,
"not-same-as-user", 0);
test_alname(context, "FOO.BAR.BAZ.KAKA", user, "root",
"not-same-as-user", 0);
krb5_free_context(context);
return 0;
}
|
