xref: /freebsd/crypto/heimdal/kdc/default_config.c (revision 884a2a699669ec61e2366e3e358342dbc94be24a) 
1 /*
2  * Copyright (c) 1997-2007 Kungliga Tekniska H�gskolan
3  * (Royal Institute of Technology, Stockholm, Sweden).
4  *
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  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  *
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * 3. Neither the name of the Institute nor the names of its contributors
19  *    may be used to endorse or promote products derived from this software
20  *    without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  */
34 
35 #include "kdc_locl.h"
36 #include <getarg.h>
37 #include <parse_bytes.h>
38 
39 RCSID("$Id: default_config.c 21405 2007-07-04 10:35:45Z lha $");
40 
41 krb5_error_code
42 krb5_kdc_get_config(krb5_context context, krb5_kdc_configuration **config)
43 {
44     krb5_kdc_configuration *c;
45 
46     c = calloc(1, sizeof(*c));
47     if (c == NULL) {
48 	krb5_set_error_string(context, "malloc: out of memory");
49 	return ENOMEM;
50     }
51 
52     c->require_preauth = TRUE;
53     c->kdc_warn_pwexpire = 0;
54     c->encode_as_rep_as_tgs_rep = FALSE;
55     c->check_ticket_addresses = TRUE;
56     c->allow_null_ticket_addresses = TRUE;
57     c->allow_anonymous = FALSE;
58     c->trpolicy = TRPOLICY_ALWAYS_CHECK;
59     c->enable_v4 = FALSE;
60     c->enable_kaserver = FALSE;
61     c->enable_524 = FALSE;
62     c->enable_v4_cross_realm = FALSE;
63     c->enable_pkinit = FALSE;
64     c->pkinit_princ_in_cert = TRUE;
65     c->pkinit_require_binding = TRUE;
66     c->db = NULL;
67     c->num_db = 0;
68     c->logf = NULL;
69 
70     c->require_preauth =
71 	krb5_config_get_bool_default(context, NULL,
72 				     c->require_preauth,
73 				     "kdc", "require-preauth", NULL);
74     c->enable_v4 =
75 	krb5_config_get_bool_default(context, NULL,
76 				     c->enable_v4,
77 				     "kdc", "enable-kerberos4", NULL);
78     c->enable_v4_cross_realm =
79 	krb5_config_get_bool_default(context, NULL,
80 				     c->enable_v4_cross_realm,
81 				     "kdc",
82 				     "enable-kerberos4-cross-realm", NULL);
83     c->enable_524 =
84 	krb5_config_get_bool_default(context, NULL,
85 				     c->enable_v4,
86 				     "kdc", "enable-524", NULL);
87     c->enable_digest =
88 	krb5_config_get_bool_default(context, NULL,
89 				     FALSE,
90 				     "kdc", "enable-digest", NULL);
91 
92     {
93 	const char *digests;
94 
95 	digests = krb5_config_get_string(context, NULL,
96 					 "kdc",
97 					 "digests_allowed", NULL);
98 	if (digests == NULL)
99 	    digests = "ntlm-v2";
100 	c->digests_allowed = parse_flags(digests,_kdc_digestunits, 0);
101 	if (c->digests_allowed == -1) {
102 	    kdc_log(context, c, 0,
103 		    "unparsable digest units (%s), turning off digest",
104 		    digests);
105 	    c->enable_digest = 0;
106 	} else if (c->digests_allowed == 0) {
107 	    kdc_log(context, c, 0,
108 		    "no digest enable, turning digest off",
109 		    digests);
110 	    c->enable_digest = 0;
111 	}
112     }
113 
114     c->enable_kx509 =
115 	krb5_config_get_bool_default(context, NULL,
116 				     FALSE,
117 				     "kdc", "enable-kx509", NULL);
118 
119     if (c->enable_kx509) {
120 	c->kx509_template =
121 	    krb5_config_get_string(context, NULL,
122 				   "kdc", "kx509_template", NULL);
123 	c->kx509_ca =
124 	    krb5_config_get_string(context, NULL,
125 				   "kdc", "kx509_ca", NULL);
126 	if (c->kx509_ca == NULL || c->kx509_template == NULL) {
127 	    kdc_log(context, c, 0,
128 		    "missing kx509 configuration, turning off");
129 	    c->enable_kx509 = FALSE;
130 	}
131     }
132 
133     c->check_ticket_addresses =
134 	krb5_config_get_bool_default(context, NULL,
135 				     c->check_ticket_addresses,
136 				     "kdc",
137 				     "check-ticket-addresses", NULL);
138     c->allow_null_ticket_addresses =
139 	krb5_config_get_bool_default(context, NULL,
140 				     c->allow_null_ticket_addresses,
141 				     "kdc",
142 				     "allow-null-ticket-addresses", NULL);
143 
144     c->allow_anonymous =
145 	krb5_config_get_bool_default(context, NULL,
146 				     c->allow_anonymous,
147 				     "kdc",
148 				     "allow-anonymous", NULL);
149 
150     c->max_datagram_reply_length =
151 	krb5_config_get_int_default(context,
152 				    NULL,
153 				    1400,
154 				    "kdc",
155 				    "max-kdc-datagram-reply-length",
156 				    NULL);
157 
158     {
159 	const char *trpolicy_str;
160 
161 	trpolicy_str =
162 	    krb5_config_get_string_default(context, NULL, "DEFAULT", "kdc",
163 					   "transited-policy", NULL);
164 	if(strcasecmp(trpolicy_str, "always-check") == 0) {
165 	    c->trpolicy = TRPOLICY_ALWAYS_CHECK;
166 	} else if(strcasecmp(trpolicy_str, "allow-per-principal") == 0) {
167 	    c->trpolicy = TRPOLICY_ALLOW_PER_PRINCIPAL;
168 	} else if(strcasecmp(trpolicy_str, "always-honour-request") == 0) {
169 	    c->trpolicy = TRPOLICY_ALWAYS_HONOUR_REQUEST;
170 	} else if(strcasecmp(trpolicy_str, "DEFAULT") == 0) {
171 	    /* default */
172 	} else {
173 	    kdc_log(context, c, 0,
174 		    "unknown transited-policy: %s, "
175 		    "reverting to default (always-check)",
176 		    trpolicy_str);
177 	}
178     }
179 
180     {
181 	const char *p;
182 	p = krb5_config_get_string (context, NULL,
183 				    "kdc",
184 				    "v4-realm",
185 				    NULL);
186 	if(p != NULL) {
187 	    c->v4_realm = strdup(p);
188 	    if (c->v4_realm == NULL)
189 		krb5_errx(context, 1, "out of memory");
190 	} else {
191 	    c->v4_realm = NULL;
192 	}
193     }
194 
195     c->enable_kaserver =
196 	krb5_config_get_bool_default(context,
197 				     NULL,
198 				     c->enable_kaserver,
199 				     "kdc", "enable-kaserver", NULL);
200 
201 
202     c->encode_as_rep_as_tgs_rep =
203 	krb5_config_get_bool_default(context, NULL,
204 				     c->encode_as_rep_as_tgs_rep,
205 				     "kdc",
206 				     "encode_as_rep_as_tgs_rep", NULL);
207 
208     c->kdc_warn_pwexpire =
209 	krb5_config_get_time_default (context, NULL,
210 				      c->kdc_warn_pwexpire,
211 				      "kdc", "kdc_warn_pwexpire", NULL);
212 
213 
214 #ifdef PKINIT
215     c->enable_pkinit =
216 	krb5_config_get_bool_default(context,
217 				     NULL,
218 				     c->enable_pkinit,
219 				     "kdc",
220 				     "enable-pkinit",
221 				     NULL);
222     if (c->enable_pkinit) {
223 	const char *user_id, *anchors, *ocsp_file;
224 	char **pool_list, **revoke_list;
225 
226 	user_id =
227 	    krb5_config_get_string(context, NULL,
228 				   "kdc", "pkinit_identity", NULL);
229 	if (user_id == NULL)
230 	    krb5_errx(context, 1, "pkinit enabled but no identity");
231 
232 	anchors = krb5_config_get_string(context, NULL,
233 					 "kdc", "pkinit_anchors", NULL);
234 	if (anchors == NULL)
235 	    krb5_errx(context, 1, "pkinit enabled but no X509 anchors");
236 
237 	pool_list =
238 	    krb5_config_get_strings(context, NULL,
239 				    "kdc", "pkinit_pool", NULL);
240 
241 	revoke_list =
242 	    krb5_config_get_strings(context, NULL,
243 				    "kdc", "pkinit_revoke", NULL);
244 
245 	ocsp_file =
246 	    krb5_config_get_string(context, NULL,
247 				   "kdc", "pkinit_kdc_ocsp", NULL);
248 	if (ocsp_file) {
249 	    c->pkinit_kdc_ocsp_file = strdup(ocsp_file);
250 	    if (c->pkinit_kdc_ocsp_file == NULL)
251 		krb5_errx(context, 1, "out of memory");
252 	}
253 
254 	_kdc_pk_initialize(context, c, user_id, anchors,
255 			   pool_list, revoke_list);
256 
257 	krb5_config_free_strings(pool_list);
258 	krb5_config_free_strings(revoke_list);
259 
260 	c->pkinit_princ_in_cert =
261 	    krb5_config_get_bool_default(context, NULL,
262 					 c->pkinit_princ_in_cert,
263 					 "kdc",
264 					 "pkinit_principal_in_certificate",
265 					 NULL);
266 
267 	c->pkinit_require_binding =
268 	    krb5_config_get_bool_default(context, NULL,
269 					 c->pkinit_require_binding,
270 					 "kdc",
271 					 "pkinit_win2k_require_binding",
272 					 NULL);
273     }
274 
275     c->pkinit_dh_min_bits =
276 	krb5_config_get_int_default(context, NULL,
277 				    0,
278 				    "kdc", "pkinit_dh_min_bits", NULL);
279 
280 #endif
281 
282     *config = c;
283 
284     return 0;
285 }
286