kdc/default_config.c

   1 /*
   2  * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
   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("$Id$");
  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_message(context, ENOMEM, "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 #ifdef DIGEST
  88     c->enable_digest =
  89         krb5_config_get_bool_default(context, NULL,
  90                                      FALSE,
  91                                      "kdc", "enable-digest", NULL);
  92
  93     {
  94         const char *digests;
  95
  96         digests = krb5_config_get_string(context, NULL,
  97                                          "kdc",
  98                                          "digests_allowed", NULL);
  99         if (digests == NULL)
 100             digests = "ntlm-v2";
 101         c->digests_allowed = parse_flags(digests,_kdc_digestunits, 0);
 102         if (c->digests_allowed == -1) {
 103             kdc_log(context, c, 0,
 104                     "unparsable digest units (%s), turning off digest",
 105                     digests);
 106             c->enable_digest = 0;
 107         } else if (c->digests_allowed == 0) {
 108             kdc_log(context, c, 0,
 109                     "no digest enable, turning digest off",
 110                     digests);
 111             c->enable_digest = 0;
 112         }
 113     }
 114 #endif
 115
 116 #ifdef KX509
 117     c->enable_kx509 =
 118         krb5_config_get_bool_default(context, NULL,
 119                                      FALSE,
 120                                      "kdc", "enable-kx509", NULL);
 121
 122     if (c->enable_kx509) {
 123         c->kx509_template =
 124             krb5_config_get_string(context, NULL,
 125                                    "kdc", "kx509_template", NULL);
 126         c->kx509_ca =
 127             krb5_config_get_string(context, NULL,
 128                                    "kdc", "kx509_ca", NULL);
 129         if (c->kx509_ca == NULL || c->kx509_template == NULL) {
 130             kdc_log(context, c, 0,
 131                     "missing kx509 configuration, turning off");
 132             c->enable_kx509 = FALSE;
 133         }
 134     }
 135 #endif
 136
 137     c->check_ticket_addresses =
 138         krb5_config_get_bool_default(context, NULL,
 139                                      c->check_ticket_addresses,
 140                                      "kdc",
 141                                      "check-ticket-addresses", NULL);
 142     c->allow_null_ticket_addresses =
 143         krb5_config_get_bool_default(context, NULL,
 144                                      c->allow_null_ticket_addresses,
 145                                      "kdc",
 146                                      "allow-null-ticket-addresses", NULL);
 147
 148     c->allow_anonymous =
 149         krb5_config_get_bool_default(context, NULL,
 150                                      c->allow_anonymous,
 151                                      "kdc",
 152                                      "allow-anonymous", NULL);
 153
 154     c->max_datagram_reply_length =
 155         krb5_config_get_int_default(context,
 156                                     NULL,
 157                                     1400,
 158                                     "kdc",
 159                                     "max-kdc-datagram-reply-length",
 160                                     NULL);
 161
 162     {
 163         const char *trpolicy_str;
 164
 165         trpolicy_str =
 166             krb5_config_get_string_default(context, NULL, "DEFAULT", "kdc",
 167                                            "transited-policy", NULL);
 168         if(strcasecmp(trpolicy_str, "always-check") == 0) {
 169             c->trpolicy = TRPOLICY_ALWAYS_CHECK;
 170         } else if(strcasecmp(trpolicy_str, "allow-per-principal") == 0) {
 171             c->trpolicy = TRPOLICY_ALLOW_PER_PRINCIPAL;
 172         } else if(strcasecmp(trpolicy_str, "always-honour-request") == 0) {
 173             c->trpolicy = TRPOLICY_ALWAYS_HONOUR_REQUEST;
 174         } else if(strcasecmp(trpolicy_str, "DEFAULT") == 0) {
 175             /* default */
 176         } else {
 177             kdc_log(context, c, 0,
 178                     "unknown transited-policy: %s, "
 179                     "reverting to default (always-check)",
 180                     trpolicy_str);
 181         }
 182     }
 183
 184     {
 185         const char *p;
 186         p = krb5_config_get_string (context, NULL,
 187                                     "kdc",
 188                                     "v4-realm",
 189                                     NULL);
 190         if(p != NULL) {
 191             c->v4_realm = strdup(p);
 192             if (c->v4_realm == NULL)
 193                 krb5_errx(context, 1, "out of memory");
 194         } else {
 195             c->v4_realm = NULL;
 196         }
 197     }
 198
 199     c->enable_kaserver =
 200         krb5_config_get_bool_default(context,
 201                                      NULL,
 202                                      c->enable_kaserver,
 203                                      "kdc", "enable-kaserver", NULL);
 204
 205
 206     c->encode_as_rep_as_tgs_rep =
 207         krb5_config_get_bool_default(context, NULL,
 208                                      c->encode_as_rep_as_tgs_rep,
 209                                      "kdc",
 210                                      "encode_as_rep_as_tgs_rep", NULL);
 211
 212     c->kdc_warn_pwexpire =
 213         krb5_config_get_time_default (context, NULL,
 214                                       c->kdc_warn_pwexpire,
 215                                       "kdc", "kdc_warn_pwexpire", NULL);
 216
 217
 218 #ifdef PKINIT
 219     c->enable_pkinit =
 220         krb5_config_get_bool_default(context,
 221                                      NULL,
 222                                      c->enable_pkinit,
 223                                      "kdc",
 224                                      "enable-pkinit",
 225                                      NULL);
 226     if (c->enable_pkinit) {
 227         const char *user_id, *anchors, *file;
 228         char **pool_list, **revoke_list;
 229
 230         user_id =
 231             krb5_config_get_string(context, NULL,
 232                                    "kdc", "pkinit_identity", NULL);
 233         if (user_id == NULL)
 234             krb5_errx(context, 1, "pkinit enabled but no identity");
 235
 236         anchors = krb5_config_get_string(context, NULL,
 237                                          "kdc", "pkinit_anchors", NULL);
 238         if (anchors == NULL)
 239             krb5_errx(context, 1, "pkinit enabled but no X509 anchors");
 240
 241         pool_list =
 242             krb5_config_get_strings(context, NULL,
 243                                     "kdc", "pkinit_pool", NULL);
 244
 245         revoke_list =
 246             krb5_config_get_strings(context, NULL,
 247                                     "kdc", "pkinit_revoke", NULL);
 248
 249         file = krb5_config_get_string(context, NULL,
 250                                       "kdc", "pkinit_kdc_ocsp", NULL);
 251         if (file) {
 252             c->pkinit_kdc_ocsp_file = strdup(file);
 253             if (c->pkinit_kdc_ocsp_file == NULL)
 254                 krb5_errx(context, 1, "out of memory");
 255         }
 256
 257         file = krb5_config_get_string(context, NULL,
 258                                       "kdc", "pkinit_kdc_friendly_name", NULL);
 259         if (file) {
 260             c->pkinit_kdc_friendly_name = strdup(file);
 261             if (c->pkinit_kdc_friendly_name == NULL)
 262                 krb5_errx(context, 1, "out of memory");
 263         }
 264
 265
 266         _kdc_pk_initialize(context, c, user_id, anchors,
 267                            pool_list, revoke_list);
 268
 269         krb5_config_free_strings(pool_list);
 270         krb5_config_free_strings(revoke_list);
 271
 272         c->pkinit_princ_in_cert =
 273             krb5_config_get_bool_default(context, NULL,
 274                                          c->pkinit_princ_in_cert,
 275                                          "kdc",
 276                                          "pkinit_principal_in_certificate",
 277                                          NULL);
 278
 279         c->pkinit_require_binding =
 280             krb5_config_get_bool_default(context, NULL,
 281                                          c->pkinit_require_binding,
 282                                          "kdc",
 283                                          "pkinit_win2k_require_binding",
 284                                          NULL);
 285     }
 286
 287     c->pkinit_dh_min_bits =
 288         krb5_config_get_int_default(context, NULL,
 289                                     0,
 290                                     "kdc", "pkinit_dh_min_bits", NULL);
 291
 292 #endif
 293
 294     *config = c;
 295
 296     return 0;
 297 }