1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* include/krb5/kdcpolicy_plugin.h - KDC policy plugin interface */
3 /*
4 * Copyright (C) 2017 by Red Hat, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * * Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
22 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
23 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
24 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
25 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
26 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
28 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
30 * OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "k5-int.h"
34 #include "kdb.h"
35 #include <krb5/kdcpolicy_plugin.h>
36
37 static krb5_error_code
output_from_indicator(const char * const * auth_indicators,int divisor,krb5_deltat * lifetime_out,krb5_deltat * renew_lifetime_out,const char ** status)38 output_from_indicator(const char *const *auth_indicators, int divisor,
39 krb5_deltat *lifetime_out,
40 krb5_deltat *renew_lifetime_out,
41 const char **status)
42 {
43 if (auth_indicators[0] == NULL) {
44 *status = NULL;
45 return 0;
46 }
47
48 if (strcmp(auth_indicators[0], "ONE_HOUR") == 0) {
49 *lifetime_out = 3600 / divisor;
50 *renew_lifetime_out = *lifetime_out * 2;
51 return 0;
52 } else if (strcmp(auth_indicators[0], "SEVEN_HOURS") == 0) {
53 *lifetime_out = 7 * 3600 / divisor;
54 *renew_lifetime_out = *lifetime_out * 2;
55 return 0;
56 }
57
58 *status = "LOCAL_POLICY";
59 return KRB5KDC_ERR_POLICY;
60 }
61
62 static krb5_error_code
test_check_as(krb5_context context,krb5_kdcpolicy_moddata moddata,const krb5_kdc_req * request,const krb5_db_entry * client,const krb5_db_entry * server,const char * const * auth_indicators,const char ** status,krb5_deltat * lifetime_out,krb5_deltat * renew_lifetime_out)63 test_check_as(krb5_context context, krb5_kdcpolicy_moddata moddata,
64 const krb5_kdc_req *request, const krb5_db_entry *client,
65 const krb5_db_entry *server, const char *const *auth_indicators,
66 const char **status, krb5_deltat *lifetime_out,
67 krb5_deltat *renew_lifetime_out)
68 {
69 if (request->client != NULL && request->client->length >= 1 &&
70 data_eq_string(request->client->data[0], "fail")) {
71 *status = "LOCAL_POLICY";
72 return KRB5KDC_ERR_POLICY;
73 }
74 return output_from_indicator(auth_indicators, 1, lifetime_out,
75 renew_lifetime_out, status);
76 }
77
78 static krb5_error_code
test_check_tgs(krb5_context context,krb5_kdcpolicy_moddata moddata,const krb5_kdc_req * request,const krb5_db_entry * server,const krb5_ticket * ticket,const char * const * auth_indicators,const char ** status,krb5_deltat * lifetime_out,krb5_deltat * renew_lifetime_out)79 test_check_tgs(krb5_context context, krb5_kdcpolicy_moddata moddata,
80 const krb5_kdc_req *request, const krb5_db_entry *server,
81 const krb5_ticket *ticket, const char *const *auth_indicators,
82 const char **status, krb5_deltat *lifetime_out,
83 krb5_deltat *renew_lifetime_out)
84 {
85 if (request->server != NULL && request->server->length >= 1 &&
86 data_eq_string(request->server->data[0], "fail")) {
87 *status = "LOCAL_POLICY";
88 return KRB5KDC_ERR_POLICY;
89 }
90 return output_from_indicator(auth_indicators, 2, lifetime_out,
91 renew_lifetime_out, status);
92 }
93
94 krb5_error_code
95 kdcpolicy_test_initvt(krb5_context context, int maj_ver, int min_ver,
96 krb5_plugin_vtable vtable);
97 krb5_error_code
kdcpolicy_test_initvt(krb5_context context,int maj_ver,int min_ver,krb5_plugin_vtable vtable)98 kdcpolicy_test_initvt(krb5_context context, int maj_ver, int min_ver,
99 krb5_plugin_vtable vtable)
100 {
101 krb5_kdcpolicy_vtable vt;
102
103 if (maj_ver != 1)
104 return KRB5_PLUGIN_VER_NOTSUPP;
105
106 vt = (krb5_kdcpolicy_vtable)vtable;
107 vt->name = "test";
108 vt->check_as = test_check_as;
109 vt->check_tgs = test_check_tgs;
110 return 0;
111 }
112