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->num_kdc_processes = -1;
  52     c->require_preauth = TRUE;
  53     c->kdc_warn_pwexpire = 0;
  54     c->encode_as_rep_as_tgs_rep = FALSE;
  55     c->tgt_use_strongest_session_key = FALSE;
  56     c->preauth_use_strongest_session_key = FALSE;
  57     c->svc_use_strongest_session_key = FALSE;
  58     c->use_strongest_server_key = TRUE;
  59     c->check_ticket_addresses = TRUE;
  60     c->allow_null_ticket_addresses = TRUE;
  61     c->allow_anonymous = FALSE;
  62     c->trpolicy = TRPOLICY_ALWAYS_CHECK;
  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->num_kdc_processes =
  71         krb5_config_get_int_default(context, NULL, c->num_kdc_processes,
  72                                     "kdc", "num-kdc-processes", NULL);
  73
  74     c->require_preauth =
  75         krb5_config_get_bool_default(context, NULL,
  76                                      c->require_preauth,
  77                                      "kdc", "require-preauth", NULL);
  78 #ifdef DIGEST
  79     c->enable_digest =
  80         krb5_config_get_bool_default(context, NULL,
  81                                      FALSE,
  82                                      "kdc", "enable-digest", NULL);
  83
  84     {
  85         const char *digests;
  86
  87         digests = krb5_config_get_string(context, NULL,
  88                                          "kdc",
  89                                          "digests_allowed", NULL);
  90         if (digests == NULL)
  91             digests = "ntlm-v2";
  92         c->digests_allowed = parse_flags(digests,_kdc_digestunits, 0);
  93         if (c->digests_allowed == -1) {
  94             kdc_log(context, c, 0,
  95                     "unparsable digest units (%s), turning off digest",
  96                     digests);
  97             c->enable_digest = 0;
  98         } else if (c->digests_allowed == 0) {
  99             kdc_log(context, c, 0,
 100                     "no digest enable, turning digest off",
 101                     digests);
 102             c->enable_digest = 0;
 103         }
 104     }
 105 #endif
 106
 107 #ifdef KX509
 108     c->enable_kx509 =
 109         krb5_config_get_bool_default(context, NULL,
 110                                      FALSE,
 111                                      "kdc", "enable-kx509", NULL);
 112
 113     if (c->enable_kx509) {
 114         c->kx509_template =
 115             krb5_config_get_string(context, NULL,
 116                                    "kdc", "kx509_template", NULL);
 117         c->kx509_ca =
 118             krb5_config_get_string(context, NULL,
 119                                    "kdc", "kx509_ca", NULL);
 120         if (c->kx509_ca == NULL || c->kx509_template == NULL) {
 121             kdc_log(context, c, 0,
 122                     "missing kx509 configuration, turning off");
 123             c->enable_kx509 = FALSE;
 124         }
 125     }
 126 #endif
 127
 128     c->tgt_use_strongest_session_key =
 129         krb5_config_get_bool_default(context, NULL,
 130                                      c->tgt_use_strongest_session_key,
 131                                      "kdc",
 132                                      "tgt-use-strongest-session-key", NULL);
 133     c->preauth_use_strongest_session_key =
 134         krb5_config_get_bool_default(context, NULL,
 135                                      c->preauth_use_strongest_session_key,
 136                                      "kdc",
 137                                      "preauth-use-strongest-session-key", NULL);
 138     c->svc_use_strongest_session_key =
 139         krb5_config_get_bool_default(context, NULL,
 140                                      c->svc_use_strongest_session_key,
 141                                      "kdc",
 142                                      "svc-use-strongest-session-key", NULL);
 143     c->use_strongest_server_key =
 144         krb5_config_get_bool_default(context, NULL,
 145                                      c->use_strongest_server_key,
 146                                      "kdc",
 147                                      "use-strongest-server-key", NULL);
 148
 149     c->check_ticket_addresses =
 150         krb5_config_get_bool_default(context, NULL,
 151                                      c->check_ticket_addresses,
 152                                      "kdc",
 153                                      "check-ticket-addresses", NULL);
 154     c->allow_null_ticket_addresses =
 155         krb5_config_get_bool_default(context, NULL,
 156                                      c->allow_null_ticket_addresses,
 157                                      "kdc",
 158                                      "allow-null-ticket-addresses", NULL);
 159
 160     c->allow_anonymous =
 161         krb5_config_get_bool_default(context, NULL,
 162                                      c->allow_anonymous,
 163                                      "kdc",
 164                                      "allow-anonymous", NULL);
 165
 166     c->max_datagram_reply_length =
 167         krb5_config_get_int_default(context,
 168                                     NULL,
 169                                     1400,
 170                                     "kdc",
 171                                     "max-kdc-datagram-reply-length",
 172                                     NULL);
 173
 174     {
 175         const char *trpolicy_str;
 176
 177         trpolicy_str =
 178             krb5_config_get_string_default(context, NULL, "DEFAULT", "kdc",
 179                                            "transited-policy", NULL);
 180         if(strcasecmp(trpolicy_str, "always-check") == 0) {
 181             c->trpolicy = TRPOLICY_ALWAYS_CHECK;
 182         } else if(strcasecmp(trpolicy_str, "allow-per-principal") == 0) {
 183             c->trpolicy = TRPOLICY_ALLOW_PER_PRINCIPAL;
 184         } else if(strcasecmp(trpolicy_str, "always-honour-request") == 0) {
 185             c->trpolicy = TRPOLICY_ALWAYS_HONOUR_REQUEST;
 186         } else if(strcasecmp(trpolicy_str, "DEFAULT") == 0) {
 187             /* default */
 188         } else {
 189             kdc_log(context, c, 0,
 190                     "unknown transited-policy: %s, "
 191                     "reverting to default (always-check)",
 192                     trpolicy_str);
 193         }
 194     }
 195
 196     c->encode_as_rep_as_tgs_rep =
 197         krb5_config_get_bool_default(context, NULL,
 198                                      c->encode_as_rep_as_tgs_rep,
 199                                      "kdc",
 200                                      "encode_as_rep_as_tgs_rep", NULL);
 201
 202     c->kdc_warn_pwexpire =
 203         krb5_config_get_time_default (context, NULL,
 204                                       c->kdc_warn_pwexpire,
 205                                       "kdc", "kdc_warn_pwexpire", NULL);
 206
 207
 208     c->enable_pkinit =
 209         krb5_config_get_bool_default(context,
 210                                      NULL,
 211                                      c->enable_pkinit,
 212                                      "kdc",
 213                                      "enable-pkinit",
 214                                      NULL);
 215
 216
 217     c->pkinit_kdc_identity =
 218         krb5_config_get_string(context, NULL,
 219                                "kdc", "pkinit_identity", NULL);
 220     c->pkinit_kdc_anchors =
 221         krb5_config_get_string(context, NULL,
 222                                "kdc", "pkinit_anchors", NULL);
 223     c->pkinit_kdc_cert_pool =
 224         krb5_config_get_strings(context, NULL,
 225                                 "kdc", "pkinit_pool", NULL);
 226     c->pkinit_kdc_revoke =
 227         krb5_config_get_strings(context, NULL,
 228                                 "kdc", "pkinit_revoke", NULL);
 229     c->pkinit_kdc_ocsp_file =
 230         krb5_config_get_string(context, NULL,
 231                                "kdc", "pkinit_kdc_ocsp", NULL);
 232     c->pkinit_kdc_friendly_name =
 233         krb5_config_get_string(context, NULL,
 234                                "kdc", "pkinit_kdc_friendly_name", NULL);
 235     c->pkinit_princ_in_cert =
 236         krb5_config_get_bool_default(context, NULL,
 237                                      c->pkinit_princ_in_cert,
 238                                      "kdc",
 239                                      "pkinit_principal_in_certificate",
 240                                      NULL);
 241     c->pkinit_require_binding =
 242         krb5_config_get_bool_default(context, NULL,
 243                                      c->pkinit_require_binding,
 244                                      "kdc",
 245                                      "pkinit_win2k_require_binding",
 246                                      NULL);
 247     c->pkinit_dh_min_bits =
 248         krb5_config_get_int_default(context, NULL,
 249                                     0,
 250                                     "kdc", "pkinit_dh_min_bits", NULL);
 251
 252     *config = c;
 253
 254     return 0;
 255 }
 256
 257 krb5_error_code
 258 krb5_kdc_pkinit_config(krb5_context context, krb5_kdc_configuration *config)
 259 {
 260 #ifdef PKINIT
 261 #ifdef __APPLE__
 262     config->enable_pkinit = 1;
 263
 264     if (config->pkinit_kdc_identity == NULL) {
 265         if (config->pkinit_kdc_friendly_name == NULL)
 266             config->pkinit_kdc_friendly_name =
 267                 strdup("O=System Identity,CN=com.apple.kerberos.kdc");
 268         config->pkinit_kdc_identity = strdup("KEYCHAIN:");
 269     }
 270     if (config->pkinit_kdc_anchors == NULL)
 271         config->pkinit_kdc_anchors = strdup("KEYCHAIN:");
 272
 273 #endif /* __APPLE__ */
 274
 275     if (config->enable_pkinit) {
 276         if (config->pkinit_kdc_identity == NULL)
 277             krb5_errx(context, 1, "pkinit enabled but no identity");
 278
 279         if (config->pkinit_kdc_anchors == NULL)
 280             krb5_errx(context, 1, "pkinit enabled but no X509 anchors");
 281
 282         krb5_kdc_pk_initialize(context, config,
 283                                config->pkinit_kdc_identity,
 284                                config->pkinit_kdc_anchors,
 285                                config->pkinit_kdc_cert_pool,
 286                                config->pkinit_kdc_revoke);
 287
 288     }
 289
 290     return 0;
 291 #endif /* PKINIT */
 292 }