default_config.c revision 178826 
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
39RCSID("$Id: default_config.c 21405 2007-07-04 10:35:45Z lha $");
40
41krb5_error_code
42krb5_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