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) 2015 Cryptonector LLC.
* 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. The name Cryptonector LLC may not 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <roken.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <gssapi.h>
#include <err.h>
#include <getarg.h>
static void
print_gss_err(OM_uint32 stat, int status_type, gss_OID mech)
{
gss_buffer_desc str;
OM_uint32 maj;
OM_uint32 min;
OM_uint32 msg_ctx = 0;
int first = 1;
do {
maj = gss_display_status(&min, stat, status_type, mech, &msg_ctx,
&str);
if (maj != GSS_S_COMPLETE) {
fprintf(stderr, "Error displaying GSS %s error (%lu): %lu, %lu",
status_type == GSS_C_GSS_CODE ? "major" : "minor",
(unsigned long)stat, (unsigned long)maj,
(unsigned long)min);
return;
}
if (first) {
fprintf(stderr, "GSS %s error: %.*s\n",
status_type == GSS_C_GSS_CODE ? "major" : "minor",
(int)str.length, (char *)str.value);
first = 0;
} else {
fprintf(stderr, "\t%.*s\n", (int)str.length, (char *)str.value);
}
gss_release_buffer(&min, &str);
} while (msg_ctx != 0);
}
static void
print_gss_errs(OM_uint32 major, OM_uint32 minor, gss_OID mech)
{
print_gss_err(major, GSS_C_GSS_CODE, GSS_C_NO_OID);
print_gss_err(major, GSS_C_MECH_CODE, mech);
}
static void
gss_err(int exitval, OM_uint32 major, OM_uint32 minor, gss_OID mech,
const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vwarnx(fmt, args);
va_end(args);
print_gss_errs(major, minor, mech);
exit(exitval);
}
static int version_flag = 0;
static int help_flag = 0;
static int env_flag = 0;
static int def_flag = 0;
static int overwrite_flag = 0;
static struct getargs args[] = {
{"version", 0, arg_flag, &version_flag, "print version", NULL },
{"help", 0, arg_flag, &help_flag, NULL, NULL },
{"env", 'e', arg_flag, &env_flag,
"output env settings", NULL },
{"default", 0, arg_flag, &def_flag,
"switch credential store default principal", NULL },
{"overwrite", 0, arg_flag, &overwrite_flag,
"overwrite matching credential", NULL },
};
static void
usage(int ret)
{
arg_printusage(args, sizeof(args)/sizeof(*args),
NULL, "from_ccache to_ccache");
exit(ret);
}
int
main(int argc, char **argv)
{
OM_uint32 major, minor;
gss_cred_id_t from_cred = GSS_C_NO_CREDENTIAL;
gss_cred_id_t to_cred = GSS_C_NO_CREDENTIAL;
gss_cred_id_t cred = GSS_C_NO_CREDENTIAL;
gss_key_value_element_desc from_elements, to_elements;
gss_key_value_set_desc from, to;
gss_buffer_set_t env = GSS_C_NO_BUFFER_SET;
OM_uint32 store_flags = 0;
int optidx = 0;
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);
}
if (def_flag)
store_flags |= GSS_C_STORE_CRED_DEFAULT;
if (overwrite_flag)
store_flags |= GSS_C_STORE_CRED_OVERWRITE;
argc -= optidx;
argv += optidx;
if (argc < 2)
errx(1, "required arguments missing");
if (argc > 2)
errx(1, "too many arguments");
from_elements.key = "ccache";
from_elements.value = argv[0];
from.count = 1;
from.elements = &from_elements;
to_elements.key = "ccache";
to_elements.value = argv[1];
to.count = 1;
to.elements = &to_elements;
major = gss_add_cred_from(&minor, GSS_C_NO_CREDENTIAL, GSS_C_NO_NAME,
GSS_KRB5_MECHANISM, GSS_C_INITIATE,
GSS_C_INDEFINITE, GSS_C_INDEFINITE,
&from, &from_cred, NULL, NULL, NULL);
if (major != GSS_S_COMPLETE)
gss_err(1, major, minor, GSS_KRB5_MECHANISM,
"failed to acquire creds from %s", argv[0]);
major = gss_store_cred_into2(&minor, from_cred, GSS_C_INITIATE,
GSS_KRB5_MECHANISM, store_flags, &to, NULL,
NULL, env_flag ? &env : NULL);
if (major != GSS_S_COMPLETE)
gss_err(1, major, minor, GSS_KRB5_MECHANISM,
"failed to store creds into %s", argv[1]);
if (env_flag) {
size_t i;
int got_krb5ccname = 0;
if (env == GSS_C_NO_BUFFER_SET)
warnx("No environment settings");
for (i = 0; env != GSS_C_NO_BUFFER_SET && i < env->count; i++) {
got_krb5ccname = got_krb5ccname ||
(env->elements[i].length > sizeof("KRB5CCNAME=") &&
strncmp((const char *)env->elements[i].value, "KRB5CCNAME=",
sizeof("KRB5CCNAME=") - 1) == 0);
printf("%.*s\n", (int)env->elements[i].length,
(const char *)env->elements[i].value);
}
(void) gss_release_buffer_set(&minor, &env);
if (!got_krb5ccname)
errx(1, "KRB5CCNAME environment variable not set by "
"gss_store_cred_into2()");
}
(void) gss_release_cred(&minor, &from_cred);
(void) gss_release_cred(&minor, &to_cred);
major = gss_add_cred(&minor, GSS_C_NO_CREDENTIAL, GSS_C_NO_NAME,
GSS_KRB5_MECHANISM, GSS_C_INITIATE, GSS_C_INDEFINITE,
GSS_C_INDEFINITE, &cred, NULL, NULL, NULL);
if (major != GSS_S_COMPLETE)
gss_err(1, major, minor, GSS_KRB5_MECHANISM,
"failed to acquire creds from %s", argv[1]);
(void) gss_release_cred(&minor, &cred);
return 0;
}
|
