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->check_ticket_addresses = TRUE;
  55     c->allow_null_ticket_addresses = TRUE;
  56     c->allow_anonymous = FALSE;
  57     c->trpolicy = TRPOLICY_ALWAYS_CHECK;
  58     c->enable_pkinit = FALSE;
  59     c->pkinit_princ_in_cert = TRUE;
  60     c->pkinit_require_binding = TRUE;
  61     c->db = NULL;
  62     c->num_db = 0;
  63     c->logf = NULL;
  64
  65     c->require_preauth =
  66         krb5_config_get_bool_default(context, NULL,
  67                                      c->require_preauth,
  68                                      "kdc", "require-preauth", NULL);
  69 #ifdef DIGEST
  70     c->enable_digest =
  71         krb5_config_get_bool_default(context, NULL,
  72                                      FALSE,
  73                                      "kdc", "enable-digest", NULL);
  74
  75     {
  76         const char *digests;
  77
  78         digests = krb5_config_get_string(context, NULL,
  79                                          "kdc",
  80                                          "digests_allowed", NULL);
  81         if (digests == NULL)
  82             digests = "ntlm-v2";
  83         c->digests_allowed = parse_flags(digests,_kdc_digestunits, 0);
  84         if (c->digests_allowed == -1) {
  85             kdc_log(context, c, 0,
  86                     "unparsable digest units (%s), turning off digest",
  87                     digests);
  88             c->enable_digest = 0;
  89         } else if (c->digests_allowed == 0) {
  90             kdc_log(context, c, 0,
  91                     "no digest enable, turning digest off",
  92                     digests);
  93             c->enable_digest = 0;
  94         }
  95     }
  96 #endif
  97
  98 #ifdef KX509
  99     c->enable_kx509 =
 100         krb5_config_get_bool_default(context, NULL,
 101                                      FALSE,
 102                                      "kdc", "enable-kx509", NULL);
 103
 104     if (c->enable_kx509) {
 105         c->kx509_template =
 106             krb5_config_get_string(context, NULL,
 107                                    "kdc", "kx509_template", NULL);
 108         c->kx509_ca =
 109             krb5_config_get_string(context, NULL,
 110                                    "kdc", "kx509_ca", NULL);
 111         if (c->kx509_ca == NULL || c->kx509_template == NULL) {
 112             kdc_log(context, c, 0,
 113                     "missing kx509 configuration, turning off");
 114             c->enable_kx509 = FALSE;
 115         }
 116     }
 117 #endif
 118
 119     c->check_ticket_addresses =
 120         krb5_config_get_bool_default(context, NULL,
 121                                      c->check_ticket_addresses,
 122                                      "kdc",
 123                                      "check-ticket-addresses", NULL);
 124     c->allow_null_ticket_addresses =
 125         krb5_config_get_bool_default(context, NULL,
 126                                      c->allow_null_ticket_addresses,
 127                                      "kdc",
 128                                      "allow-null-ticket-addresses", NULL);
 129
 130     c->allow_anonymous =
 131         krb5_config_get_bool_default(context, NULL,
 132                                      c->allow_anonymous,
 133                                      "kdc",
 134                                      "allow-anonymous", NULL);
 135
 136     c->max_datagram_reply_length =
 137         krb5_config_get_int_default(context,
 138                                     NULL,
 139                                     1400,
 140                                     "kdc",
 141                                     "max-kdc-datagram-reply-length",
 142                                     NULL);
 143
 144     {
 145         const char *trpolicy_str;
 146
 147         trpolicy_str =
 148             krb5_config_get_string_default(context, NULL, "DEFAULT", "kdc",
 149                                            "transited-policy", NULL);
 150         if(strcasecmp(trpolicy_str, "always-check") == 0) {
 151             c->trpolicy = TRPOLICY_ALWAYS_CHECK;
 152         } else if(strcasecmp(trpolicy_str, "allow-per-principal") == 0) {
 153             c->trpolicy = TRPOLICY_ALLOW_PER_PRINCIPAL;
 154         } else if(strcasecmp(trpolicy_str, "always-honour-request") == 0) {
 155             c->trpolicy = TRPOLICY_ALWAYS_HONOUR_REQUEST;
 156         } else if(strcasecmp(trpolicy_str, "DEFAULT") == 0) {
 157             /* default */
 158         } else {
 159             kdc_log(context, c, 0,
 160                     "unknown transited-policy: %s, "
 161                     "reverting to default (always-check)",
 162                     trpolicy_str);
 163         }
 164     }
 165
 166     c->encode_as_rep_as_tgs_rep =
 167         krb5_config_get_bool_default(context, NULL,
 168                                      c->encode_as_rep_as_tgs_rep,
 169                                      "kdc",
 170                                      "encode_as_rep_as_tgs_rep", NULL);
 171
 172     c->kdc_warn_pwexpire =
 173         krb5_config_get_time_default (context, NULL,
 174                                       c->kdc_warn_pwexpire,
 175                                       "kdc", "kdc_warn_pwexpire", NULL);
 176
 177
 178     c->enable_pkinit =
 179         krb5_config_get_bool_default(context,
 180                                      NULL,
 181                                      c->enable_pkinit,
 182                                      "kdc",
 183                                      "enable-pkinit",
 184                                      NULL);
 185
 186
 187     c->pkinit_kdc_identity =
 188         krb5_config_get_string(context, NULL,
 189                                "kdc", "pkinit_identity", NULL);
 190     c->pkinit_kdc_anchors =
 191         krb5_config_get_string(context, NULL,
 192                                "kdc", "pkinit_anchors", NULL);
 193     c->pkinit_kdc_cert_pool =
 194         krb5_config_get_strings(context, NULL,
 195                                 "kdc", "pkinit_pool", NULL);
 196     c->pkinit_kdc_revoke =
 197         krb5_config_get_strings(context, NULL,
 198                                 "kdc", "pkinit_revoke", NULL);
 199     c->pkinit_kdc_ocsp_file =
 200         krb5_config_get_string(context, NULL,
 201                                "kdc", "pkinit_kdc_ocsp", NULL);
 202     c->pkinit_kdc_friendly_name =
 203         krb5_config_get_string(context, NULL,
 204                                "kdc", "pkinit_kdc_friendly_name", NULL);
 205     c->pkinit_princ_in_cert =
 206         krb5_config_get_bool_default(context, NULL,
 207                                      c->pkinit_princ_in_cert,
 208                                      "kdc",
 209                                      "pkinit_principal_in_certificate",
 210                                      NULL);
 211     c->pkinit_require_binding =
 212         krb5_config_get_bool_default(context, NULL,
 213                                      c->pkinit_require_binding,
 214                                      "kdc",
 215                                      "pkinit_win2k_require_binding",
 216                                      NULL);
 217     c->pkinit_dh_min_bits =
 218         krb5_config_get_int_default(context, NULL,
 219                                     0,
 220                                     "kdc", "pkinit_dh_min_bits", NULL);
 221
 222     *config = c;
 223
 224     return 0;
 225 }
 226
 227 krb5_error_code
 228 krb5_kdc_pkinit_config(krb5_context context, krb5_kdc_configuration *config)
 229 {
 230 #ifdef PKINIT
 231 #ifdef __APPLE__
 232     config->enable_pkinit = 1;
 233
 234     if (config->pkinit_kdc_identity == NULL) {
 235         if (config->pkinit_kdc_friendly_name == NULL)
 236             config->pkinit_kdc_friendly_name =
 237                 strdup("O=System Identity,CN=com.apple.kerberos.kdc");
 238         config->pkinit_kdc_identity = strdup("KEYCHAIN:");
 239     }
 240     if (config->pkinit_kdc_anchors == NULL)
 241         config->pkinit_kdc_anchors = strdup("KEYCHAIN:");
 242
 243 #endif /* __APPLE__ */
 244
 245     if (config->enable_pkinit) {
 246         if (config->pkinit_kdc_identity == NULL)
 247             krb5_errx(context, 1, "pkinit enabled but no identity");
 248
 249         if (config->pkinit_kdc_anchors == NULL)
 250             krb5_errx(context, 1, "pkinit enabled but no X509 anchors");
 251
 252         krb5_kdc_pk_initialize(context, config,
 253                                config->pkinit_kdc_identity,
 254                                config->pkinit_kdc_anchors,
 255                                config->pkinit_kdc_cert_pool,
 256                                config->pkinit_kdc_revoke);
 257
 258     }
 259
 260     return 0;
 261 #endif /* PKINIT */
 262 }