crypto/external/bsd/heimdal/dist/kdc/config.c

   1 /*      $NetBSD: config.c,v 1.1.1.2 2014/04/24 12:45:27 pettai Exp $    */
   2
   3 /*
   4  * Copyright (c) 1997-2007 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  *
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * 3. Neither the name of the Institute nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #include "kdc_locl.h"
  39 #include <krb5/getarg.h>
  40 #include <krb5/parse_bytes.h>
  41
  42 struct dbinfo {
  43     char *realm;
  44     char *dbname;
  45     char *mkey_file;
  46     struct dbinfo *next;
  47 };
  48
  49 static char *config_file;       /* location of kdc config file */
  50
  51 static int require_preauth = -1; /* 1 == require preauth for all principals */
  52 static char *max_request_str;   /* `max_request' as a string */
  53
  54 static int disable_des = -1;
  55
  56 static int builtin_hdb_flag;
  57 static int help_flag;
  58 static int version_flag;
  59
  60 static struct getarg_strings addresses_str;     /* addresses to listen on */
  61
  62 char *runas_string;
  63 char *chroot_string;
  64
  65
  66 static struct getargs args[] = {
  67     {
  68         "config-file",  'c',    arg_string,     &config_file,
  69         "location of config file",      "file"
  70     },
  71     {
  72         "require-preauth",      'p',    arg_negative_flag, &require_preauth,
  73         "don't require pa-data in as-reqs", NULL
  74     },
  75     {
  76         "max-request",  0,      arg_string, &max_request_str,
  77         "max size for a kdc-request", "size"
  78     },
  79     { "enable-http", 'H', arg_flag, &enable_http, "turn on HTTP support",
  80          NULL },
  81     {   "ports",        'P',    arg_string, rk_UNCONST(&port_str),
  82         "ports to listen to", "portspec"
  83     },
  84 #ifdef SUPPORT_DETACH
  85 #if DETACH_IS_DEFAULT
  86     {
  87         "detach",       'D',      arg_negative_flag, &detach_from_console,
  88         "don't detach from console", NULL
  89     },
  90 #else
  91     {
  92         "detach",       0 ,      arg_flag, &detach_from_console,
  93         "detach from console", NULL
  94     },
  95 #endif
  96 #endif
  97     {   "addresses",    0,      arg_strings, &addresses_str,
  98         "addresses to listen on", "list of addresses" },
  99     {   "disable-des",  0,      arg_flag, &disable_des,
 100         "disable DES", NULL },
 101     {   "builtin-hdb",  0,      arg_flag,   &builtin_hdb_flag,
 102         "list builtin hdb backends", NULL},
 103     {   "runas-user",   0,      arg_string, &runas_string,
 104         "run as this user when connected to network", NULL
 105     },
 106     {   "chroot",       0,      arg_string, &chroot_string,
 107         "chroot directory to run in", NULL
 108     },
 109     {   "help",         'h',    arg_flag,   &help_flag, NULL, NULL },
 110     {   "version",      'v',    arg_flag,   &version_flag, NULL, NULL }
 111 };
 112
 113 static int num_args = sizeof(args) / sizeof(args[0]);
 114
 115 static void
 116 usage(int ret)
 117 {
 118     arg_printusage (args, num_args, NULL, "");
 119     exit (ret);
 120 }
 121
 122 static void
 123 add_one_address (krb5_context context, const char *str, int first)
 124 {
 125     krb5_error_code ret;
 126     krb5_addresses tmp;
 127
 128     ret = krb5_parse_address (context, str, &tmp);
 129     if (ret)
 130         krb5_err (context, 1, ret, "parse_address `%s'", str);
 131     if (first)
 132         krb5_copy_addresses(context, &tmp, &explicit_addresses);
 133     else
 134         krb5_append_addresses(context, &explicit_addresses, &tmp);
 135     krb5_free_addresses (context, &tmp);
 136 }
 137
 138 krb5_kdc_configuration *
 139 configure(krb5_context context, int argc, char **argv)
 140 {
 141     krb5_kdc_configuration *config;
 142     krb5_error_code ret;
 143     int optidx = 0;
 144     const char *p;
 145
 146     while(getarg(args, num_args, argc, argv, &optidx))
 147         warnx("error at argument `%s'", argv[optidx]);
 148
 149     if(help_flag)
 150         usage (0);
 151
 152     if (version_flag) {
 153         print_version(NULL);
 154         exit(0);
 155     }
 156
 157     if (builtin_hdb_flag) {
 158         char *list;
 159         ret = hdb_list_builtin(context, &list);
 160         if (ret)
 161             krb5_err(context, 1, ret, "listing builtin hdb backends");
 162         printf("builtin hdb backends: %s\n", list);
 163         free(list);
 164         exit(0);
 165     }
 166
 167     argc -= optidx;
 168     argv += optidx;
 169
 170     if (argc != 0)
 171         usage(1);
 172
 173     {
 174         char **files;
 175
 176         if (config_file == NULL) {
 177             asprintf(&config_file, "%s/kdc.conf", hdb_db_dir(context));
 178             if (config_file == NULL)
 179                 errx(1, "out of memory");
 180         }
 181
 182         ret = krb5_prepend_config_files_default(config_file, &files);
 183         if (ret)
 184             krb5_err(context, 1, ret, "getting configuration files");
 185
 186         ret = krb5_set_config_files(context, files);
 187         krb5_free_config_files(files);
 188         if(ret)
 189             krb5_err(context, 1, ret, "reading configuration files");
 190     }
 191
 192     ret = krb5_kdc_get_config(context, &config);
 193     if (ret)
 194         krb5_err(context, 1, ret, "krb5_kdc_default_config");
 195
 196     kdc_openlog(context, "kdc", config);
 197
 198     ret = krb5_kdc_set_dbinfo(context, config);
 199     if (ret)
 200         krb5_err(context, 1, ret, "krb5_kdc_set_dbinfo");
 201
 202     if(max_request_str)
 203         max_request_tcp = max_request_udp = parse_bytes(max_request_str, NULL);
 204
 205     if(max_request_tcp == 0){
 206         p = krb5_config_get_string (context,
 207                                     NULL,
 208                                     "kdc",
 209                                     "max-request",
 210                                     NULL);
 211         if(p)
 212             max_request_tcp = max_request_udp = parse_bytes(p, NULL);
 213     }
 214
 215     if(require_preauth != -1)
 216         config->require_preauth = require_preauth;
 217
 218     if(port_str == NULL){
 219         p = krb5_config_get_string(context, NULL, "kdc", "ports", NULL);
 220         if (p != NULL)
 221             port_str = strdup(p);
 222     }
 223
 224     explicit_addresses.len = 0;
 225
 226     if (addresses_str.num_strings) {
 227         int i;
 228
 229         for (i = 0; i < addresses_str.num_strings; ++i)
 230             add_one_address (context, addresses_str.strings[i], i == 0);
 231         free_getarg_strings (&addresses_str);
 232     } else {
 233         char **foo = krb5_config_get_strings (context, NULL,
 234                                               "kdc", "addresses", NULL);
 235
 236         if (foo != NULL) {
 237             add_one_address (context, *foo++, TRUE);
 238             while (*foo)
 239                 add_one_address (context, *foo++, FALSE);
 240         }
 241     }
 242
 243     if(enable_http == -1)
 244         enable_http = krb5_config_get_bool(context, NULL, "kdc",
 245                                            "enable-http", NULL);
 246
 247     if(request_log == NULL)
 248         request_log = krb5_config_get_string(context, NULL,
 249                                              "kdc",
 250                                              "kdc-request-log",
 251                                              NULL);
 252
 253     if (krb5_config_get_string(context, NULL, "kdc",
 254                                "enforce-transited-policy", NULL))
 255         krb5_errx(context, 1, "enforce-transited-policy deprecated, "
 256                   "use [kdc]transited-policy instead");
 257
 258 #ifdef SUPPORT_DETACH
 259     if(detach_from_console == -1)
 260         detach_from_console = krb5_config_get_bool_default(context, NULL,
 261                                                            DETACH_IS_DEFAULT,
 262                                                            "kdc",
 263                                                            "detach", NULL);
 264 #endif /* SUPPORT_DETACH */
 265
 266     if(max_request_tcp == 0)
 267         max_request_tcp = 64 * 1024;
 268     if(max_request_udp == 0)
 269         max_request_udp = 64 * 1024;
 270
 271     if (port_str == NULL)
 272         port_str = "+";
 273
 274     if(disable_des == -1)
 275         disable_des = krb5_config_get_bool_default(context, NULL,
 276                                                    FALSE,
 277                                                    "kdc",
 278                                                    "disable-des", NULL);
 279     if(disable_des) {
 280         krb5_enctype_disable(context, ETYPE_DES_CBC_CRC);
 281         krb5_enctype_disable(context, ETYPE_DES_CBC_MD4);
 282         krb5_enctype_disable(context, ETYPE_DES_CBC_MD5);
 283         krb5_enctype_disable(context, ETYPE_DES_CBC_NONE);
 284         krb5_enctype_disable(context, ETYPE_DES_CFB64_NONE);
 285         krb5_enctype_disable(context, ETYPE_DES_PCBC_NONE);
 286     }
 287
 288     krb5_kdc_windc_init(context);
 289
 290     krb5_kdc_pkinit_config(context, config);
 291
 292     return config;
 293 }