kdc/default_config.c

   1 /*
   2  * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "kdc_locl.h"
  37 #include <getarg.h>
  38 #include <parse_bytes.h>
  39
  40 krb5_error_code
  41 krb5_kdc_get_config(krb5_context context, krb5_kdc_configuration **config)
  42 {
  43     krb5_kdc_configuration *c;
  44
  45     c = calloc(1, sizeof(*c));
  46     if (c == NULL) {
  47         krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
  48         return ENOMEM;
  49     }
  50
  51     c->require_preauth = TRUE;
  52     c->kdc_warn_pwexpire = 0;
  53     c->encode_as_rep_as_tgs_rep = FALSE;
  54     c->as_use_strongest_session_key = FALSE;
  55     c->preauth_use_strongest_session_key = FALSE;
  56     c->tgs_use_strongest_session_key = FALSE;
  57     c->use_strongest_server_key = TRUE;
  58     c->check_ticket_addresses = TRUE;
  59     c->allow_null_ticket_addresses = TRUE;
  60     c->allow_anonymous = FALSE;
  61     c->trpolicy = TRPOLICY_ALWAYS_CHECK;
  62     c->enable_pkinit = FALSE;
  63     c->pkinit_princ_in_cert = TRUE;
  64     c->pkinit_require_binding = TRUE;
  65     c->db = NULL;
  66     c->num_db = 0;
  67     c->logf = NULL;
  68
  69     c->require_preauth =
  70         krb5_config_get_bool_default(context, NULL,
  71                                      c->require_preauth,
  72                                      "kdc", "require-preauth", NULL);
  73 #ifdef DIGEST
  74     c->enable_digest =
  75         krb5_config_get_bool_default(context, NULL,
  76                                      FALSE,
  77                                      "kdc", "enable-digest", NULL);
  78
  79     {
  80         const char *digests;
  81
  82         digests = krb5_config_get_string(context, NULL,
  83                                          "kdc",
  84                                          "digests_allowed", NULL);
  85         if (digests == NULL)
  86             digests = "ntlm-v2";
  87         c->digests_allowed = parse_flags(digests,_kdc_digestunits, 0);
  88         if (c->digests_allowed == -1) {
  89             kdc_log(context, c, 0,
  90                     "unparsable digest units (%s), turning off digest",
  91                     digests);
  92             c->enable_digest = 0;
  93         } else if (c->digests_allowed == 0) {
  94             kdc_log(context, c, 0,
  95                     "no digest enable, turning digest off",
  96                     digests);
  97             c->enable_digest = 0;
  98         }
  99     }
 100 #endif
 101
 102 #ifdef KX509
 103     c->enable_kx509 =
 104         krb5_config_get_bool_default(context, NULL,
 105                                      FALSE,
 106                                      "kdc", "enable-kx509", NULL);
 107
 108     if (c->enable_kx509) {
 109         c->kx509_template =
 110             krb5_config_get_string(context, NULL,
 111                                    "kdc", "kx509_template", NULL);
 112         c->kx509_ca =
 113             krb5_config_get_string(context, NULL,
 114                                    "kdc", "kx509_ca", NULL);
 115         if (c->kx509_ca == NULL || c->kx509_template == NULL) {
 116             kdc_log(context, c, 0,
 117                     "missing kx509 configuration, turning off");
 118             c->enable_kx509 = FALSE;
 119         }
 120     }
 121 #endif
 122
 123     c->as_use_strongest_session_key =
 124         krb5_config_get_bool_default(context, NULL,
 125                                      c->as_use_strongest_session_key,
 126                                      "kdc",
 127                                      "as-use-strongest-session-key", NULL);
 128     c->preauth_use_strongest_session_key =
 129         krb5_config_get_bool_default(context, NULL,
 130                                      c->preauth_use_strongest_session_key,
 131                                      "kdc",
 132                                      "preauth-use-strongest-session-key", NULL);
 133     c->tgs_use_strongest_session_key =
 134         krb5_config_get_bool_default(context, NULL,
 135                                      c->tgs_use_strongest_session_key,
 136                                      "kdc",
 137                                      "tgs-use-strongest-session-key", NULL);
 138     c->use_strongest_server_key =
 139         krb5_config_get_bool_default(context, NULL,
 140                                      c->use_strongest_server_key,
 141                                      "kdc",
 142                                      "use-strongest-server-key", NULL);
 143
 144     c->check_ticket_addresses =
 145         krb5_config_get_bool_default(context, NULL,
 146                                      c->check_ticket_addresses,
 147                                      "kdc",
 148                                      "check-ticket-addresses", NULL);
 149     c->allow_null_ticket_addresses =
 150         krb5_config_get_bool_default(context, NULL,
 151                                      c->allow_null_ticket_addresses,
 152                                      "kdc",
 153                                      "allow-null-ticket-addresses", NULL);
 154
 155     c->allow_anonymous =
 156         krb5_config_get_bool_default(context, NULL,
 157                                      c->allow_anonymous,
 158                                      "kdc",
 159                                      "allow-anonymous", NULL);
 160
 161     c->max_datagram_reply_length =
 162         krb5_config_get_int_default(context,
 163                                     NULL,
 164                                     1400,
 165                                     "kdc",
 166                                     "max-kdc-datagram-reply-length",
 167                                     NULL);
 168
 169     {
 170         const char *trpolicy_str;
 171
 172         trpolicy_str =
 173             krb5_config_get_string_default(context, NULL, "DEFAULT", "kdc",
 174                                            "transited-policy", NULL);
 175         if(strcasecmp(trpolicy_str, "always-check") == 0) {
 176             c->trpolicy = TRPOLICY_ALWAYS_CHECK;
 177         } else if(strcasecmp(trpolicy_str, "allow-per-principal") == 0) {
 178             c->trpolicy = TRPOLICY_ALLOW_PER_PRINCIPAL;
 179         } else if(strcasecmp(trpolicy_str, "always-honour-request") == 0) {
 180             c->trpolicy = TRPOLICY_ALWAYS_HONOUR_REQUEST;
 181         } else if(strcasecmp(trpolicy_str, "DEFAULT") == 0) {
 182             /* default */
 183         } else {
 184             kdc_log(context, c, 0,
 185                     "unknown transited-policy: %s, "
 186                     "reverting to default (always-check)",
 187                     trpolicy_str);
 188         }
 189     }
 190
 191     c->encode_as_rep_as_tgs_rep =
 192         krb5_config_get_bool_default(context, NULL,
 193                                      c->encode_as_rep_as_tgs_rep,
 194                                      "kdc",
 195                                      "encode_as_rep_as_tgs_rep", NULL);
 196
 197     c->kdc_warn_pwexpire =
 198         krb5_config_get_time_default (context, NULL,
 199                                       c->kdc_warn_pwexpire,
 200                                       "kdc", "kdc_warn_pwexpire", NULL);
 201
 202
 203     c->enable_pkinit =
 204         krb5_config_get_bool_default(context,
 205                                      NULL,
 206                                      c->enable_pkinit,
 207                                      "kdc",
 208                                      "enable-pkinit",
 209                                      NULL);
 210
 211
 212     c->pkinit_kdc_identity =
 213         krb5_config_get_string(context, NULL,
 214                                "kdc", "pkinit_identity", NULL);
 215     c->pkinit_kdc_anchors =
 216         krb5_config_get_string(context, NULL,
 217                                "kdc", "pkinit_anchors", NULL);
 218     c->pkinit_kdc_cert_pool =
 219         krb5_config_get_strings(context, NULL,
 220                                 "kdc", "pkinit_pool", NULL);
 221     c->pkinit_kdc_revoke =
 222         krb5_config_get_strings(context, NULL,
 223                                 "kdc", "pkinit_revoke", NULL);
 224     c->pkinit_kdc_ocsp_file =
 225         krb5_config_get_string(context, NULL,
 226                                "kdc", "pkinit_kdc_ocsp", NULL);
 227     c->pkinit_kdc_friendly_name =
 228         krb5_config_get_string(context, NULL,
 229                                "kdc", "pkinit_kdc_friendly_name", NULL);
 230     c->pkinit_princ_in_cert =
 231         krb5_config_get_bool_default(context, NULL,
 232                                      c->pkinit_princ_in_cert,
 233                                      "kdc",
 234                                      "pkinit_principal_in_certificate",
 235                                      NULL);
 236     c->pkinit_require_binding =
 237         krb5_config_get_bool_default(context, NULL,
 238                                      c->pkinit_require_binding,
 239                                      "kdc",
 240                                      "pkinit_win2k_require_binding",
 241                                      NULL);
 242     c->pkinit_dh_min_bits =
 243         krb5_config_get_int_default(context, NULL,
 244                                     0,
 245                                     "kdc", "pkinit_dh_min_bits", NULL);
 246
 247     *config = c;
 248
 249     return 0;
 250 }
 251
 252 krb5_error_code
 253 krb5_kdc_pkinit_config(krb5_context context, krb5_kdc_configuration *config)
 254 {
 255 #ifdef PKINIT
 256 #ifdef __APPLE__
 257     config->enable_pkinit = 1;
 258
 259     if (config->pkinit_kdc_identity == NULL) {
 260         if (config->pkinit_kdc_friendly_name == NULL)
 261             config->pkinit_kdc_friendly_name =
 262                 strdup("O=System Identity,CN=com.apple.kerberos.kdc");
 263         config->pkinit_kdc_identity = strdup("KEYCHAIN:");
 264     }
 265     if (config->pkinit_kdc_anchors == NULL)
 266         config->pkinit_kdc_anchors = strdup("KEYCHAIN:");
 267
 268 #endif /* __APPLE__ */
 269
 270     if (config->enable_pkinit) {
 271         if (config->pkinit_kdc_identity == NULL)
 272             krb5_errx(context, 1, "pkinit enabled but no identity");
 273
 274         if (config->pkinit_kdc_anchors == NULL)
 275             krb5_errx(context, 1, "pkinit enabled but no X509 anchors");
 276
 277         krb5_kdc_pk_initialize(context, config,
 278                                config->pkinit_kdc_identity,
 279                                config->pkinit_kdc_anchors,
 280                                config->pkinit_kdc_cert_pool,
 281                                config->pkinit_kdc_revoke);
 282
 283     }
 284
 285     return 0;
 286 #endif /* PKINIT */
 287 }