323 lines
8.7 KiB
C
323 lines
8.7 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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*
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* 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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RCSID("$Id: config.c 22248 2007-12-08 23:52:12Z lha $");
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struct dbinfo {
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char *realm;
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char *dbname;
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char *mkey_file;
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struct dbinfo *next;
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};
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static char *config_file; /* location of kdc config file */
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static int require_preauth = -1; /* 1 == require preauth for all principals */
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static char *max_request_str; /* `max_request' as a string */
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static int disable_des = -1;
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static int enable_v4 = -1;
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static int enable_kaserver = -1;
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static int enable_524 = -1;
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static int enable_v4_cross_realm = -1;
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static int builtin_hdb_flag;
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static int help_flag;
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static int version_flag;
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static struct getarg_strings addresses_str; /* addresses to listen on */
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static char *v4_realm;
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static struct getargs args[] = {
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{
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"config-file", 'c', arg_string, &config_file,
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"location of config file", "file"
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},
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{
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"require-preauth", 'p', arg_negative_flag, &require_preauth,
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"don't require pa-data in as-reqs"
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},
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{
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"max-request", 0, arg_string, &max_request,
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"max size for a kdc-request", "size"
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},
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{ "enable-http", 'H', arg_flag, &enable_http, "turn on HTTP support" },
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{ "524", 0, arg_negative_flag, &enable_524,
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"don't respond to 524 requests"
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},
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{
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"kaserver", 'K', arg_flag, &enable_kaserver,
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"enable kaserver support"
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},
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{ "kerberos4", 0, arg_flag, &enable_v4,
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"respond to kerberos 4 requests"
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},
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{
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"v4-realm", 'r', arg_string, &v4_realm,
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"realm to serve v4-requests for"
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},
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{ "kerberos4-cross-realm", 0, arg_flag,
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&enable_v4_cross_realm,
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"respond to kerberos 4 requests from foreign realms"
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},
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{ "ports", 'P', arg_string, &port_str,
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"ports to listen to", "portspec"
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},
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#if DETACH_IS_DEFAULT
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{
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"detach", 'D', arg_negative_flag, &detach_from_console,
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"don't detach from console"
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},
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#else
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{
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"detach", 0 , arg_flag, &detach_from_console,
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"detach from console"
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},
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#endif
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{ "addresses", 0, arg_strings, &addresses_str,
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"addresses to listen on", "list of addresses" },
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{ "disable-des", 0, arg_flag, &disable_des,
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"disable DES" },
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{ "builtin-hdb", 0, arg_flag, &builtin_hdb_flag,
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"list builtin hdb backends"},
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{ "help", 'h', arg_flag, &help_flag },
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{ "version", 'v', arg_flag, &version_flag }
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};
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static int num_args = sizeof(args) / sizeof(args[0]);
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static void
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usage(int ret)
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{
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arg_printusage (args, num_args, NULL, "");
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exit (ret);
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}
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static void
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add_one_address (krb5_context context, const char *str, int first)
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{
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krb5_error_code ret;
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krb5_addresses tmp;
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ret = krb5_parse_address (context, str, &tmp);
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if (ret)
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krb5_err (context, 1, ret, "parse_address `%s'", str);
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if (first)
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krb5_copy_addresses(context, &tmp, &explicit_addresses);
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else
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krb5_append_addresses(context, &explicit_addresses, &tmp);
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krb5_free_addresses (context, &tmp);
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}
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krb5_kdc_configuration *
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configure(krb5_context context, int argc, char **argv)
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{
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krb5_kdc_configuration *config;
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krb5_error_code ret;
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int optidx = 0;
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const char *p;
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while(getarg(args, num_args, argc, argv, &optidx))
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warnx("error at argument `%s'", argv[optidx]);
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if(help_flag)
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usage (0);
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if (version_flag) {
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print_version(NULL);
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exit(0);
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}
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if (builtin_hdb_flag) {
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char *list;
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ret = hdb_list_builtin(context, &list);
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if (ret)
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krb5_err(context, 1, ret, "listing builtin hdb backends");
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printf("builtin hdb backends: %s\n", list);
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free(list);
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exit(0);
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}
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argc -= optidx;
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argv += optidx;
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if (argc != 0)
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usage(1);
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{
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char **files;
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if (config_file == NULL) {
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asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context));
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if (config_file == NULL)
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errx(1, "out of memory");
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}
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ret = krb5_prepend_config_files_default(config_file, &files);
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if (ret)
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krb5_err(context, 1, ret, "getting configuration files");
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ret = krb5_set_config_files(context, files);
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krb5_free_config_files(files);
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if(ret)
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krb5_err(context, 1, ret, "reading configuration files");
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}
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ret = krb5_kdc_get_config(context, &config);
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if (ret)
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krb5_err(context, 1, ret, "krb5_kdc_default_config");
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kdc_openlog(context, config);
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ret = krb5_kdc_set_dbinfo(context, config);
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if (ret)
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krb5_err(context, 1, ret, "krb5_kdc_set_dbinfo");
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if(max_request_str)
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max_request = parse_bytes(max_request_str, NULL);
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if(max_request == 0){
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p = krb5_config_get_string (context,
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NULL,
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"kdc",
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"max-request",
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NULL);
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if(p)
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max_request = parse_bytes(p, NULL);
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}
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if(require_preauth != -1)
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config->require_preauth = require_preauth;
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if(port_str == NULL){
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p = krb5_config_get_string(context, NULL, "kdc", "ports", NULL);
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if (p != NULL)
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port_str = strdup(p);
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}
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explicit_addresses.len = 0;
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if (addresses_str.num_strings) {
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int i;
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for (i = 0; i < addresses_str.num_strings; ++i)
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add_one_address (context, addresses_str.strings[i], i == 0);
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free_getarg_strings (&addresses_str);
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} else {
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char **foo = krb5_config_get_strings (context, NULL,
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"kdc", "addresses", NULL);
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if (foo != NULL) {
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add_one_address (context, *foo++, TRUE);
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while (*foo)
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add_one_address (context, *foo++, FALSE);
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}
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}
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if(enable_v4 != -1)
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config->enable_v4 = enable_v4;
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if(enable_v4_cross_realm != -1)
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config->enable_v4_cross_realm = enable_v4_cross_realm;
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if(enable_524 != -1)
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config->enable_524 = enable_524;
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if(enable_http == -1)
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enable_http = krb5_config_get_bool(context, NULL, "kdc",
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"enable-http", NULL);
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if(request_log == NULL)
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request_log = krb5_config_get_string(context, NULL,
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"kdc",
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"kdc-request-log",
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NULL);
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if (krb5_config_get_string(context, NULL, "kdc",
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"enforce-transited-policy", NULL))
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krb5_errx(context, 1, "enforce-transited-policy deprecated, "
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"use [kdc]transited-policy instead");
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if (enable_kaserver != -1)
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config->enable_kaserver = enable_kaserver;
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if(detach_from_console == -1)
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detach_from_console = krb5_config_get_bool_default(context, NULL,
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DETACH_IS_DEFAULT,
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"kdc",
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"detach", NULL);
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if(max_request == 0)
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max_request = 64 * 1024;
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if (port_str == NULL)
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port_str = "+";
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if (v4_realm)
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config->v4_realm = v4_realm;
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if(config->v4_realm == NULL && (config->enable_kaserver || config->enable_v4))
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krb5_errx(context, 1, "Kerberos 4 enabled but no realm configured");
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if(disable_des == -1)
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disable_des = krb5_config_get_bool_default(context, NULL,
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FALSE,
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"kdc",
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"disable-des", NULL);
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if(disable_des) {
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krb5_enctype_disable(context, ETYPE_DES_CBC_CRC);
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krb5_enctype_disable(context, ETYPE_DES_CBC_MD4);
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krb5_enctype_disable(context, ETYPE_DES_CBC_MD5);
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krb5_enctype_disable(context, ETYPE_DES_CBC_NONE);
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krb5_enctype_disable(context, ETYPE_DES_CFB64_NONE);
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krb5_enctype_disable(context, ETYPE_DES_PCBC_NONE);
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kdc_log(context, config,
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0, "DES was disabled, turned off Kerberos V4, 524 "
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"and kaserver");
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config->enable_v4 = 0;
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config->enable_524 = 0;
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config->enable_kaserver = 0;
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}
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krb5_kdc_windc_init(context);
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return config;
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}
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