352a7e94a3
We now fork(2) a number of separate KDC processes rather than a single process. By default, the number is selected by asking how many CPUs the machine has. We also have a master process which monitors all of the children (which do the actual work) and it will restart kids who die for any reason. The children will die when the parent dies. In the case of MacOS X, we also move the bonjour code into another separate child as it creates threads and this is known to play rather poorly with fork(2). We could move this logic into a designated child at some point in the future. We slow down the spawning to one every 25ms to prevent instant crashes and restarts from consuming all available system time. This approach may want to be revisited in the future.
293 lines
8.9 KiB
C
293 lines
8.9 KiB
C
/*
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* Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Portions Copyright (c) 2009 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "kdc_locl.h"
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#include <getarg.h>
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#include <parse_bytes.h>
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krb5_error_code
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krb5_kdc_get_config(krb5_context context, krb5_kdc_configuration **config)
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{
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krb5_kdc_configuration *c;
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c = calloc(1, sizeof(*c));
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if (c == NULL) {
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krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
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return ENOMEM;
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}
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c->num_kdc_processes = -1;
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c->require_preauth = TRUE;
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c->kdc_warn_pwexpire = 0;
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c->encode_as_rep_as_tgs_rep = FALSE;
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c->tgt_use_strongest_session_key = FALSE;
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c->preauth_use_strongest_session_key = FALSE;
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c->svc_use_strongest_session_key = FALSE;
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c->use_strongest_server_key = TRUE;
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c->check_ticket_addresses = TRUE;
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c->allow_null_ticket_addresses = TRUE;
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c->allow_anonymous = FALSE;
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c->trpolicy = TRPOLICY_ALWAYS_CHECK;
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c->enable_pkinit = FALSE;
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c->pkinit_princ_in_cert = TRUE;
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c->pkinit_require_binding = TRUE;
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c->db = NULL;
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c->num_db = 0;
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c->logf = NULL;
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c->num_kdc_processes =
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krb5_config_get_int_default(context, NULL, c->num_kdc_processes,
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"kdc", "num-kdc-processes", NULL);
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c->require_preauth =
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krb5_config_get_bool_default(context, NULL,
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c->require_preauth,
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"kdc", "require-preauth", NULL);
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#ifdef DIGEST
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c->enable_digest =
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krb5_config_get_bool_default(context, NULL,
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FALSE,
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"kdc", "enable-digest", NULL);
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{
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const char *digests;
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digests = krb5_config_get_string(context, NULL,
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"kdc",
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"digests_allowed", NULL);
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if (digests == NULL)
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digests = "ntlm-v2";
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c->digests_allowed = parse_flags(digests,_kdc_digestunits, 0);
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if (c->digests_allowed == -1) {
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kdc_log(context, c, 0,
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"unparsable digest units (%s), turning off digest",
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digests);
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c->enable_digest = 0;
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} else if (c->digests_allowed == 0) {
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kdc_log(context, c, 0,
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"no digest enable, turning digest off",
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digests);
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c->enable_digest = 0;
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}
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}
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#endif
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#ifdef KX509
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c->enable_kx509 =
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krb5_config_get_bool_default(context, NULL,
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FALSE,
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"kdc", "enable-kx509", NULL);
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if (c->enable_kx509) {
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c->kx509_template =
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krb5_config_get_string(context, NULL,
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"kdc", "kx509_template", NULL);
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c->kx509_ca =
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krb5_config_get_string(context, NULL,
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"kdc", "kx509_ca", NULL);
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if (c->kx509_ca == NULL || c->kx509_template == NULL) {
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kdc_log(context, c, 0,
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"missing kx509 configuration, turning off");
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c->enable_kx509 = FALSE;
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}
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}
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#endif
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c->tgt_use_strongest_session_key =
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krb5_config_get_bool_default(context, NULL,
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c->tgt_use_strongest_session_key,
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"kdc",
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"tgt-use-strongest-session-key", NULL);
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c->preauth_use_strongest_session_key =
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krb5_config_get_bool_default(context, NULL,
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c->preauth_use_strongest_session_key,
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"kdc",
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"preauth-use-strongest-session-key", NULL);
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c->svc_use_strongest_session_key =
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krb5_config_get_bool_default(context, NULL,
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c->svc_use_strongest_session_key,
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"kdc",
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"svc-use-strongest-session-key", NULL);
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c->use_strongest_server_key =
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krb5_config_get_bool_default(context, NULL,
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c->use_strongest_server_key,
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"kdc",
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"use-strongest-server-key", NULL);
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c->check_ticket_addresses =
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krb5_config_get_bool_default(context, NULL,
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c->check_ticket_addresses,
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"kdc",
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"check-ticket-addresses", NULL);
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c->allow_null_ticket_addresses =
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krb5_config_get_bool_default(context, NULL,
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c->allow_null_ticket_addresses,
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"kdc",
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"allow-null-ticket-addresses", NULL);
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c->allow_anonymous =
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krb5_config_get_bool_default(context, NULL,
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c->allow_anonymous,
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"kdc",
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"allow-anonymous", NULL);
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c->max_datagram_reply_length =
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krb5_config_get_int_default(context,
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NULL,
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1400,
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"kdc",
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"max-kdc-datagram-reply-length",
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NULL);
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{
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const char *trpolicy_str;
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trpolicy_str =
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krb5_config_get_string_default(context, NULL, "DEFAULT", "kdc",
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"transited-policy", NULL);
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if(strcasecmp(trpolicy_str, "always-check") == 0) {
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c->trpolicy = TRPOLICY_ALWAYS_CHECK;
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} else if(strcasecmp(trpolicy_str, "allow-per-principal") == 0) {
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c->trpolicy = TRPOLICY_ALLOW_PER_PRINCIPAL;
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} else if(strcasecmp(trpolicy_str, "always-honour-request") == 0) {
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c->trpolicy = TRPOLICY_ALWAYS_HONOUR_REQUEST;
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} else if(strcasecmp(trpolicy_str, "DEFAULT") == 0) {
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/* default */
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} else {
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kdc_log(context, c, 0,
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"unknown transited-policy: %s, "
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"reverting to default (always-check)",
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trpolicy_str);
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}
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}
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c->encode_as_rep_as_tgs_rep =
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krb5_config_get_bool_default(context, NULL,
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c->encode_as_rep_as_tgs_rep,
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"kdc",
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"encode_as_rep_as_tgs_rep", NULL);
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c->kdc_warn_pwexpire =
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krb5_config_get_time_default (context, NULL,
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c->kdc_warn_pwexpire,
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"kdc", "kdc_warn_pwexpire", NULL);
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c->enable_pkinit =
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krb5_config_get_bool_default(context,
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NULL,
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c->enable_pkinit,
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"kdc",
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"enable-pkinit",
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NULL);
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c->pkinit_kdc_identity =
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krb5_config_get_string(context, NULL,
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"kdc", "pkinit_identity", NULL);
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c->pkinit_kdc_anchors =
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krb5_config_get_string(context, NULL,
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"kdc", "pkinit_anchors", NULL);
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c->pkinit_kdc_cert_pool =
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krb5_config_get_strings(context, NULL,
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"kdc", "pkinit_pool", NULL);
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c->pkinit_kdc_revoke =
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krb5_config_get_strings(context, NULL,
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"kdc", "pkinit_revoke", NULL);
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c->pkinit_kdc_ocsp_file =
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krb5_config_get_string(context, NULL,
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"kdc", "pkinit_kdc_ocsp", NULL);
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c->pkinit_kdc_friendly_name =
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krb5_config_get_string(context, NULL,
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"kdc", "pkinit_kdc_friendly_name", NULL);
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c->pkinit_princ_in_cert =
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krb5_config_get_bool_default(context, NULL,
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c->pkinit_princ_in_cert,
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"kdc",
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"pkinit_principal_in_certificate",
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NULL);
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c->pkinit_require_binding =
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krb5_config_get_bool_default(context, NULL,
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c->pkinit_require_binding,
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"kdc",
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"pkinit_win2k_require_binding",
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NULL);
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c->pkinit_dh_min_bits =
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krb5_config_get_int_default(context, NULL,
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0,
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"kdc", "pkinit_dh_min_bits", NULL);
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*config = c;
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return 0;
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}
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krb5_error_code
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krb5_kdc_pkinit_config(krb5_context context, krb5_kdc_configuration *config)
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{
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#ifdef PKINIT
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#ifdef __APPLE__
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config->enable_pkinit = 1;
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if (config->pkinit_kdc_identity == NULL) {
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if (config->pkinit_kdc_friendly_name == NULL)
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config->pkinit_kdc_friendly_name =
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strdup("O=System Identity,CN=com.apple.kerberos.kdc");
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config->pkinit_kdc_identity = strdup("KEYCHAIN:");
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}
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if (config->pkinit_kdc_anchors == NULL)
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config->pkinit_kdc_anchors = strdup("KEYCHAIN:");
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#endif /* __APPLE__ */
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if (config->enable_pkinit) {
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if (config->pkinit_kdc_identity == NULL)
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krb5_errx(context, 1, "pkinit enabled but no identity");
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if (config->pkinit_kdc_anchors == NULL)
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krb5_errx(context, 1, "pkinit enabled but no X509 anchors");
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krb5_kdc_pk_initialize(context, config,
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config->pkinit_kdc_identity,
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config->pkinit_kdc_anchors,
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config->pkinit_kdc_cert_pool,
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config->pkinit_kdc_revoke);
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}
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return 0;
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#endif /* PKINIT */
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}
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