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-rw-r--r--kdc/config.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/kdc/config.c b/kdc/config.c
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+++ b/kdc/config.c
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+/*
+ * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "kdc_locl.h"
+#include <getarg.h>
+#include <parse_bytes.h>
+
+RCSID("$Id: config.c 22248 2007-12-08 23:52:12Z lha $");
+
+struct dbinfo {
+ char *realm;
+ char *dbname;
+ char *mkey_file;
+ struct dbinfo *next;
+};
+
+static char *config_file; /* location of kdc config file */
+
+static int require_preauth = -1; /* 1 == require preauth for all principals */
+static char *max_request_str; /* `max_request' as a string */
+
+static int disable_des = -1;
+static int enable_v4 = -1;
+static int enable_kaserver = -1;
+static int enable_524 = -1;
+static int enable_v4_cross_realm = -1;
+
+static int builtin_hdb_flag;
+static int help_flag;
+static int version_flag;
+
+static struct getarg_strings addresses_str; /* addresses to listen on */
+
+static char *v4_realm;
+
+static struct getargs args[] = {
+ {
+ "config-file", 'c', arg_string, &config_file,
+ "location of config file", "file"
+ },
+ {
+ "require-preauth", 'p', arg_negative_flag, &require_preauth,
+ "don't require pa-data in as-reqs"
+ },
+ {
+ "max-request", 0, arg_string, &max_request,
+ "max size for a kdc-request", "size"
+ },
+ { "enable-http", 'H', arg_flag, &enable_http, "turn on HTTP support" },
+ { "524", 0, arg_negative_flag, &enable_524,
+ "don't respond to 524 requests"
+ },
+ {
+ "kaserver", 'K', arg_flag, &enable_kaserver,
+ "enable kaserver support"
+ },
+ { "kerberos4", 0, arg_flag, &enable_v4,
+ "respond to kerberos 4 requests"
+ },
+ {
+ "v4-realm", 'r', arg_string, &v4_realm,
+ "realm to serve v4-requests for"
+ },
+ { "kerberos4-cross-realm", 0, arg_flag,
+ &enable_v4_cross_realm,
+ "respond to kerberos 4 requests from foreign realms"
+ },
+ { "ports", 'P', arg_string, &port_str,
+ "ports to listen to", "portspec"
+ },
+#if DETACH_IS_DEFAULT
+ {
+ "detach", 'D', arg_negative_flag, &detach_from_console,
+ "don't detach from console"
+ },
+#else
+ {
+ "detach", 0 , arg_flag, &detach_from_console,
+ "detach from console"
+ },
+#endif
+ { "addresses", 0, arg_strings, &addresses_str,
+ "addresses to listen on", "list of addresses" },
+ { "disable-des", 0, arg_flag, &disable_des,
+ "disable DES" },
+ { "builtin-hdb", 0, arg_flag, &builtin_hdb_flag,
+ "list builtin hdb backends"},
+ { "help", 'h', arg_flag, &help_flag },
+ { "version", 'v', arg_flag, &version_flag }
+};
+
+static int num_args = sizeof(args) / sizeof(args[0]);
+
+static void
+usage(int ret)
+{
+ arg_printusage (args, num_args, NULL, "");
+ exit (ret);
+}
+
+static void
+add_one_address (krb5_context context, const char *str, int first)
+{
+ krb5_error_code ret;
+ krb5_addresses tmp;
+
+ ret = krb5_parse_address (context, str, &tmp);
+ if (ret)
+ krb5_err (context, 1, ret, "parse_address `%s'", str);
+ if (first)
+ krb5_copy_addresses(context, &tmp, &explicit_addresses);
+ else
+ krb5_append_addresses(context, &explicit_addresses, &tmp);
+ krb5_free_addresses (context, &tmp);
+}
+
+krb5_kdc_configuration *
+configure(krb5_context context, int argc, char **argv)
+{
+ krb5_kdc_configuration *config;
+ krb5_error_code ret;
+ int optidx = 0;
+ const char *p;
+
+ while(getarg(args, num_args, argc, argv, &optidx))
+ warnx("error at argument `%s'", argv[optidx]);
+
+ if(help_flag)
+ usage (0);
+
+ if (version_flag) {
+ print_version(NULL);
+ exit(0);
+ }
+
+ if (builtin_hdb_flag) {
+ char *list;
+ ret = hdb_list_builtin(context, &list);
+ if (ret)
+ krb5_err(context, 1, ret, "listing builtin hdb backends");
+ printf("builtin hdb backends: %s\n", list);
+ free(list);
+ exit(0);
+ }
+
+ argc -= optidx;
+ argv += optidx;
+
+ if (argc != 0)
+ usage(1);
+
+ {
+ char **files;
+
+ if (config_file == NULL) {
+ asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context));
+ if (config_file == NULL)
+ errx(1, "out of memory");
+ }
+
+ ret = krb5_prepend_config_files_default(config_file, &files);
+ if (ret)
+ krb5_err(context, 1, ret, "getting configuration files");
+
+ ret = krb5_set_config_files(context, files);
+ krb5_free_config_files(files);
+ if(ret)
+ krb5_err(context, 1, ret, "reading configuration files");
+ }
+
+ ret = krb5_kdc_get_config(context, &config);
+ if (ret)
+ krb5_err(context, 1, ret, "krb5_kdc_default_config");
+
+ kdc_openlog(context, config);
+
+ ret = krb5_kdc_set_dbinfo(context, config);
+ if (ret)
+ krb5_err(context, 1, ret, "krb5_kdc_set_dbinfo");
+
+ if(max_request_str)
+ max_request = parse_bytes(max_request_str, NULL);
+
+ if(max_request == 0){
+ p = krb5_config_get_string (context,
+ NULL,
+ "kdc",
+ "max-request",
+ NULL);
+ if(p)
+ max_request = parse_bytes(p, NULL);
+ }
+
+ if(require_preauth != -1)
+ config->require_preauth = require_preauth;
+
+ if(port_str == NULL){
+ p = krb5_config_get_string(context, NULL, "kdc", "ports", NULL);
+ if (p != NULL)
+ port_str = strdup(p);
+ }
+
+ explicit_addresses.len = 0;
+
+ if (addresses_str.num_strings) {
+ int i;
+
+ for (i = 0; i < addresses_str.num_strings; ++i)
+ add_one_address (context, addresses_str.strings[i], i == 0);
+ free_getarg_strings (&addresses_str);
+ } else {
+ char **foo = krb5_config_get_strings (context, NULL,
+ "kdc", "addresses", NULL);
+
+ if (foo != NULL) {
+ add_one_address (context, *foo++, TRUE);
+ while (*foo)
+ add_one_address (context, *foo++, FALSE);
+ }
+ }
+
+ if(enable_v4 != -1)
+ config->enable_v4 = enable_v4;
+
+ if(enable_v4_cross_realm != -1)
+ config->enable_v4_cross_realm = enable_v4_cross_realm;
+
+ if(enable_524 != -1)
+ config->enable_524 = enable_524;
+
+ if(enable_http == -1)
+ enable_http = krb5_config_get_bool(context, NULL, "kdc",
+ "enable-http", NULL);
+
+ if(request_log == NULL)
+ request_log = krb5_config_get_string(context, NULL,
+ "kdc",
+ "kdc-request-log",
+ NULL);
+
+ if (krb5_config_get_string(context, NULL, "kdc",
+ "enforce-transited-policy", NULL))
+ krb5_errx(context, 1, "enforce-transited-policy deprecated, "
+ "use [kdc]transited-policy instead");
+
+ if (enable_kaserver != -1)
+ config->enable_kaserver = enable_kaserver;
+
+ if(detach_from_console == -1)
+ detach_from_console = krb5_config_get_bool_default(context, NULL,
+ DETACH_IS_DEFAULT,
+ "kdc",
+ "detach", NULL);
+
+ if(max_request == 0)
+ max_request = 64 * 1024;
+
+ if (port_str == NULL)
+ port_str = "+";
+
+ if (v4_realm)
+ config->v4_realm = v4_realm;
+
+ if(config->v4_realm == NULL && (config->enable_kaserver || config->enable_v4))
+ krb5_errx(context, 1, "Kerberos 4 enabled but no realm configured");
+
+ if(disable_des == -1)
+ disable_des = krb5_config_get_bool_default(context, NULL,
+ FALSE,
+ "kdc",
+ "disable-des", NULL);
+ if(disable_des) {
+ krb5_enctype_disable(context, ETYPE_DES_CBC_CRC);
+ krb5_enctype_disable(context, ETYPE_DES_CBC_MD4);
+ krb5_enctype_disable(context, ETYPE_DES_CBC_MD5);
+ krb5_enctype_disable(context, ETYPE_DES_CBC_NONE);
+ krb5_enctype_disable(context, ETYPE_DES_CFB64_NONE);
+ krb5_enctype_disable(context, ETYPE_DES_PCBC_NONE);
+
+ kdc_log(context, config,
+ 0, "DES was disabled, turned off Kerberos V4, 524 "
+ "and kaserver");
+ config->enable_v4 = 0;
+ config->enable_524 = 0;
+ config->enable_kaserver = 0;
+ }
+
+ krb5_kdc_windc_init(context);
+
+ return config;
+}
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