crypto/dist/heimdal/kadmin/init.c

   1 /*
   2  * Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "kadmin_locl.h"
  35 #include "kadmin-commands.h"
  36 #include <kadm5/private.h>
  37
  38 __RCSID("$Heimdal: init.c 17447 2006-05-05 10:52:01Z lha $"
  39         "$NetBSD$");
  40
  41 static kadm5_ret_t
  42 create_random_entry(krb5_principal princ,
  43                     unsigned max_life,
  44                     unsigned max_rlife,
  45                     uint32_t attributes)
  46 {
  47     kadm5_principal_ent_rec ent;
  48     kadm5_ret_t ret;
  49     int mask = 0;
  50     krb5_keyblock *keys;
  51     int n_keys, i;
  52     char *name;
  53     const char *password;
  54     char pwbuf[512];
  55
  56     random_password(pwbuf, sizeof(pwbuf));
  57     password = pwbuf;
  58
  59     ret = krb5_unparse_name(context, princ, &name);
  60     if (ret) {
  61         krb5_warn(context, ret, "failed to unparse principal name");
  62         return ret;
  63     }
  64
  65     memset(&ent, 0, sizeof(ent));
  66     ent.principal = princ;
  67     mask |= KADM5_PRINCIPAL;
  68     if (max_life) {
  69         ent.max_life = max_life;
  70         mask |= KADM5_MAX_LIFE;
  71     }
  72     if (max_rlife) {
  73         ent.max_renewable_life = max_rlife;
  74         mask |= KADM5_MAX_RLIFE;
  75     }
  76     ent.attributes |= attributes | KRB5_KDB_DISALLOW_ALL_TIX;
  77     mask |= KADM5_ATTRIBUTES;
  78
  79     /* Create the entry with a random password */
  80     ret = kadm5_create_principal(kadm_handle, &ent, mask, password);
  81     if(ret) {
  82         krb5_warn(context, ret, "create_random_entry(%s): randkey failed",
  83                   name);
  84         goto out;
  85     }
  86
  87     /* Replace the string2key based keys with real random bytes */
  88     ret = kadm5_randkey_principal(kadm_handle, princ, &keys, &n_keys);
  89     if(ret) {
  90         krb5_warn(context, ret, "create_random_entry*%s): randkey failed",
  91                   name);
  92         goto out;
  93     }
  94     for(i = 0; i < n_keys; i++)
  95         krb5_free_keyblock_contents(context, &keys[i]);
  96     free(keys);
  97     ret = kadm5_get_principal(kadm_handle, princ, &ent,
  98                               KADM5_PRINCIPAL | KADM5_ATTRIBUTES);
  99     if(ret) {
 100         krb5_warn(context, ret, "create_random_entry(%s): "
 101                   "unable to get principal", name);
 102         goto out;
 103     }
 104     ent.attributes &= (~KRB5_KDB_DISALLOW_ALL_TIX);
 105     ent.kvno = 1;
 106     ret = kadm5_modify_principal(kadm_handle, &ent,
 107                                  KADM5_ATTRIBUTES|KADM5_KVNO);
 108     kadm5_free_principal_ent (kadm_handle, &ent);
 109     if(ret) {
 110         krb5_warn(context, ret, "create_random_entry(%s): "
 111                   "unable to modify principal", name);
 112         goto out;
 113     }
 114  out:
 115     free(name);
 116     return ret;
 117 }
 118
 119 extern int local_flag;
 120
 121 int
 122 init(struct init_options *opt, int argc, char **argv)
 123 {
 124     kadm5_ret_t ret;
 125     int i;
 126     HDB *db;
 127     krb5_deltat max_life, max_rlife;
 128
 129     if(!local_flag) {
 130         krb5_warnx(context, "init is only available in local (-l) mode");
 131         return 0;
 132     }
 133
 134     if (opt->realm_max_ticket_life_string) {
 135         if (str2deltat (opt->realm_max_ticket_life_string, &max_life) != 0) {
 136             krb5_warnx (context, "unable to parse \"%s\"",
 137                         opt->realm_max_ticket_life_string);
 138             return 0;
 139         }
 140     }
 141     if (opt->realm_max_renewable_life_string) {
 142         if (str2deltat (opt->realm_max_renewable_life_string, &max_rlife) != 0) {
 143             krb5_warnx (context, "unable to parse \"%s\"",
 144                         opt->realm_max_renewable_life_string);
 145             return 0;
 146         }
 147     }
 148
 149     db = _kadm5_s_get_db(kadm_handle);
 150
 151     ret = db->hdb_open(context, db, O_RDWR | O_CREAT, 0600);
 152     if(ret){
 153         krb5_warn(context, ret, "hdb_open");
 154         return 0;
 155     }
 156     db->hdb_close(context, db);
 157     for(i = 0; i < argc; i++){
 158         krb5_principal princ;
 159         const char *realm = argv[i];
 160
 161         /* Create `krbtgt/REALM' */
 162         ret = krb5_make_principal(context, &princ, realm,
 163                                   KRB5_TGS_NAME, realm, NULL);
 164         if(ret)
 165             return 0;
 166         if (opt->realm_max_ticket_life_string == NULL) {
 167             max_life = 0;
 168             if(edit_deltat ("Realm max ticket life", &max_life, NULL, 0)) {
 169                 krb5_free_principal(context, princ);
 170                 return 0;
 171             }
 172         }
 173         if (opt->realm_max_renewable_life_string == NULL) {
 174             max_rlife = 0;
 175             if(edit_deltat("Realm max renewable ticket life", &max_rlife,
 176                            NULL, 0)) {
 177                 krb5_free_principal(context, princ);
 178                 return 0;
 179             }
 180         }
 181         create_random_entry(princ, max_life, max_rlife, 0);
 182         krb5_free_principal(context, princ);
 183
 184         /* Create `kadmin/changepw' */
 185         krb5_make_principal(context, &princ, realm,
 186                             "kadmin", "changepw", NULL);
 187         /*
 188          * The Windows XP (at least) password changing protocol
 189          * request the `kadmin/changepw' ticket with `renewable_ok,
 190          * renewable, forwardable' and so fails if we disallow
 191          * forwardable here.
 192          */
 193         create_random_entry(princ, 5*60, 5*60,
 194                             KRB5_KDB_DISALLOW_TGT_BASED|
 195                             KRB5_KDB_PWCHANGE_SERVICE|
 196                             KRB5_KDB_DISALLOW_POSTDATED|
 197                             KRB5_KDB_DISALLOW_RENEWABLE|
 198                             KRB5_KDB_DISALLOW_PROXIABLE|
 199                             KRB5_KDB_REQUIRES_PRE_AUTH);
 200         krb5_free_principal(context, princ);
 201
 202         /* Create `kadmin/admin' */
 203         krb5_make_principal(context, &princ, realm,
 204                             "kadmin", "admin", NULL);
 205         create_random_entry(princ, 60*60, 60*60, KRB5_KDB_REQUIRES_PRE_AUTH);
 206         krb5_free_principal(context, princ);
 207
 208         /* Create `changepw/kerberos' (for v4 compat) */
 209         krb5_make_principal(context, &princ, realm,
 210                             "changepw", "kerberos", NULL);
 211         create_random_entry(princ, 60*60, 60*60,
 212                             KRB5_KDB_DISALLOW_TGT_BASED|
 213                             KRB5_KDB_PWCHANGE_SERVICE);
 214
 215         krb5_free_principal(context, princ);
 216
 217         /* Create `kadmin/hprop' for database propagation */
 218         krb5_make_principal(context, &princ, realm,
 219                             "kadmin", "hprop", NULL);
 220         create_random_entry(princ, 60*60, 60*60,
 221                             KRB5_KDB_REQUIRES_PRE_AUTH|
 222                             KRB5_KDB_DISALLOW_TGT_BASED);
 223         krb5_free_principal(context, princ);
 224
 225         /* Create `default' */
 226         {
 227             kadm5_principal_ent_rec ent;
 228             int mask = 0;
 229
 230             memset (&ent, 0, sizeof(ent));
 231             mask |= KADM5_PRINCIPAL;
 232             krb5_make_principal(context, &ent.principal, realm,
 233                                 "default", NULL);
 234             mask |= KADM5_MAX_LIFE;
 235             ent.max_life = 24 * 60 * 60;
 236             mask |= KADM5_MAX_RLIFE;
 237             ent.max_renewable_life = 7 * ent.max_life;
 238             ent.attributes = KRB5_KDB_DISALLOW_ALL_TIX;
 239             mask |= KADM5_ATTRIBUTES;
 240
 241             ret = kadm5_create_principal(kadm_handle, &ent, mask, "");
 242             if (ret)
 243                 krb5_err (context, 1, ret, "kadm5_create_principal");
 244
 245             krb5_free_principal(context, ent.principal);
 246         }
 247     }
 248     return 0;
 249 }