/* $NetBSD: config.c,v 1.2 2017/01/28 21:31:44 christos Exp $ */
/*
* Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Portions Copyright (c) 2009 Apple Inc. 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 <krb5/getarg.h>
#include <krb5/parse_bytes.h>
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 builtin_hdb_flag;
int testing_flag;
static int help_flag;
static int version_flag;
/* Should we enable the HTTP hack? */
int enable_http = -1;
/* Log over requests to the KDC */
const char *request_log;
/* A string describing on what ports to listen */
const char *port_str;
krb5_addresses explicit_addresses;
size_t max_request_udp;
size_t max_request_tcp;
static struct getarg_strings addresses_str; /* addresses to listen on */
char *runas_string;
char *chroot_string;
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", NULL
},
{
"max-request", 0, arg_string, &max_request_str,
"max size for a kdc-request", "size"
},
{ "enable-http", 'H', arg_flag, &enable_http, "turn on HTTP support",
NULL },
{ "ports", 'P', arg_string, rk_UNCONST(&port_str),
"ports to listen to", "portspec"
},
{
"detach", 0 , arg_flag, &detach_from_console,
"detach from console", NULL
},
{
"daemon-child", 0 , arg_flag, &daemon_child,
"private argument, do not use", NULL
},
#ifdef __APPLE__
{
"bonjour", 0 , arg_flag, &do_bonjour,
"private argument, do not use", NULL
},
#endif
{ "addresses", 0, arg_strings, &addresses_str,
"addresses to listen on", "list of addresses" },
{ "disable-des", 0, arg_flag, &disable_des,
"disable DES", NULL },
{ "builtin-hdb", 0, arg_flag, &builtin_hdb_flag,
"list builtin hdb backends", NULL},
{ "runas-user", 0, arg_string, &runas_string,
"run as this user when connected to network", NULL
},
{ "chroot", 0, arg_string, &chroot_string,
"chroot directory to run in", NULL
},
{ "testing", 0, arg_flag, &testing_flag, NULL, NULL },
{ "help", 'h', arg_flag, &help_flag, NULL, NULL },
{ "version", 'v', arg_flag, &version_flag, NULL, NULL }
};
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, int *optidx)
{
krb5_kdc_configuration *config;
krb5_error_code ret;
const char *p;
*optidx = 0;
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);
}
if(detach_from_console == -1)
detach_from_console = krb5_config_get_bool_default(context, NULL,
FALSE,
"kdc",
"detach", NULL);
if (detach_from_console && daemon_child == -1)
roken_detach_prep(argc, argv, "--daemon-child");
{
char **files;
int aret;
if (config_file == NULL) {
aret = asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context));
if (aret == -1 || 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, "kdc", 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_tcp = max_request_udp = parse_bytes(max_request_str, NULL);
if(max_request_tcp == 0){
p = krb5_config_get_string (context,
NULL,
"kdc",
"max-request",
NULL);
if(p)
max_request_tcp = max_request_udp = 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_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(max_request_tcp == 0)
max_request_tcp = 64 * 1024;
if(max_request_udp == 0)
max_request_udp = 64 * 1024;
if (port_str == NULL)
port_str = "+";
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);
}
krb5_kdc_windc_init(context);
krb5_kdc_pkinit_config(context, config);
return config;
}