third_party/heimdal/lib/kadm5/ent_setup.c

   1 /*
   2  * Copyright (c) 1997 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "kadm5_locl.h"
  37
  38 RCSID("$Id$");
  39
  40 #define set_value(X, V) do { if((X) == NULL) (X) = malloc(sizeof(*(X))); *(X) = V; } while(0)
  41 #define set_null(X)     do { if((X) != NULL) free((X)); (X) = NULL; } while (0)
  42
  43 static void
  44 attr_to_flags(unsigned attr, HDBFlags *flags)
  45 {
  46     flags->postdate =           !(attr & KRB5_KDB_DISALLOW_POSTDATED);
  47     flags->forwardable =        !(attr & KRB5_KDB_DISALLOW_FORWARDABLE);
  48     flags->initial =           !!(attr & KRB5_KDB_DISALLOW_TGT_BASED);
  49     flags->renewable =          !(attr & KRB5_KDB_DISALLOW_RENEWABLE);
  50     flags->proxiable =          !(attr & KRB5_KDB_DISALLOW_PROXIABLE);
  51     /* DUP_SKEY */
  52     flags->invalid =           !!(attr & KRB5_KDB_DISALLOW_ALL_TIX);
  53     flags->require_preauth =   !!(attr & KRB5_KDB_REQUIRES_PRE_AUTH);
  54     flags->require_pwchange =  !!(attr & KRB5_KDB_REQUIRES_PWCHANGE);
  55     /* HW_AUTH */
  56     flags->server =             !(attr & KRB5_KDB_DISALLOW_SVR);
  57     flags->change_pw =         !!(attr & KRB5_KDB_PWCHANGE_SERVICE);
  58     flags->client =             !(attr & KRB5_KDB_DISALLOW_CLIENT);
  59     flags->ok_as_delegate =    !!(attr & KRB5_KDB_OK_AS_DELEGATE);
  60     flags->trusted_for_delegation = !!(attr & KRB5_KDB_TRUSTED_FOR_DELEGATION);
  61     flags->allow_kerberos4 =   !!(attr & KRB5_KDB_ALLOW_KERBEROS4);
  62     flags->allow_digest =      !!(attr & KRB5_KDB_ALLOW_DIGEST);
  63     flags->materialize =       !!(attr & KRB5_KDB_MATERIALIZE);
  64     flags->virtual_keys =      !!(attr & KRB5_KDB_VIRTUAL_KEYS);
  65     flags->virtual =           !!(attr & KRB5_KDB_VIRTUAL);
  66     flags->no_auth_data_reqd = !!(attr & KRB5_KDB_NO_AUTH_DATA_REQUIRED);
  67 }
  68
  69 /*
  70  * Modify the `ent' according to `tl_data'.
  71  */
  72
  73 static kadm5_ret_t
  74 perform_tl_data(krb5_context context,
  75                 HDB *db,
  76                 hdb_entry_ex *ent,
  77                 const krb5_tl_data *tl_data)
  78 {
  79     kadm5_ret_t ret = 0;
  80
  81     if (tl_data->tl_data_type == KRB5_TL_PASSWORD) {
  82         heim_utf8_string pw = tl_data->tl_data_contents;
  83
  84         if (pw[tl_data->tl_data_length] != '\0')
  85             return KADM5_BAD_TL_TYPE;
  86
  87         ret = hdb_entry_set_password(context, db, &ent->entry, pw);
  88
  89     } else if (tl_data->tl_data_type == KRB5_TL_LAST_PWD_CHANGE) {
  90         unsigned long t;
  91         unsigned char *s;
  92
  93         if (tl_data->tl_data_length != 4)
  94             return KADM5_BAD_TL_TYPE;
  95
  96         s = tl_data->tl_data_contents;
  97
  98         (void) _krb5_get_int(s, &t, tl_data->tl_data_length);
  99         ret = hdb_entry_set_pw_change_time(context, &ent->entry, t);
 100
 101     } else if (tl_data->tl_data_type == KRB5_TL_KEY_ROTATION) {
 102         HDB_Ext_KeyRotation *prev_kr = 0;
 103         HDB_extension *prev_ext;
 104         HDB_extension ext;
 105
 106         ext.mandatory = 0;
 107         ext.data.element = choice_HDB_extension_data_key_rotation;
 108         prev_ext = hdb_find_extension(&ent->entry, ext.data.element);
 109         if (prev_ext)
 110             prev_kr = &prev_ext->data.u.key_rotation;
 111         ret = decode_HDB_Ext_KeyRotation(tl_data->tl_data_contents,
 112                                          tl_data->tl_data_length,
 113                                          &ext.data.u.key_rotation, NULL);
 114         if (ret == 0)
 115             ret = hdb_validate_key_rotations(context, prev_kr,
 116                                              &ext.data.u.key_rotation);
 117         if (ret == 0)
 118             ret = hdb_replace_extension(context, &ent->entry, &ext);
 119         free_HDB_extension(&ext);
 120     } else if (tl_data->tl_data_type == KRB5_TL_EXTENSION) {
 121         HDB_extension ext;
 122
 123         ret = decode_HDB_extension(tl_data->tl_data_contents,
 124                                    tl_data->tl_data_length,
 125                                    &ext,
 126                                    NULL);
 127         if (ret)
 128             return KADM5_BAD_TL_TYPE;
 129
 130         if (ext.data.element == choice_HDB_extension_data_key_rotation) {
 131             HDB_extension *prev_ext = hdb_find_extension(&ent->entry,
 132                                                          ext.data.element);
 133             HDB_Ext_KeyRotation *prev_kr = 0;
 134
 135             if (prev_ext)
 136                 prev_kr = &prev_ext->data.u.key_rotation;
 137             ret = hdb_validate_key_rotations(context, prev_kr,
 138                                              &ext.data.u.key_rotation);
 139         }
 140         if (ret)
 141             ret = KADM5_BAD_TL_TYPE; /* XXX Need new error code */
 142         if (ret == 0)
 143             ret = hdb_replace_extension(context, &ent->entry, &ext);
 144         free_HDB_extension(&ext);
 145     } else if (tl_data->tl_data_type == KRB5_TL_ETYPES) {
 146         if (!ent->entry.etypes &&
 147             (ent->entry.etypes = calloc(1,
 148                                         sizeof(ent->entry.etypes[0]))) == NULL)
 149             ret = krb5_enomem(context);
 150         if (ent->entry.etypes)
 151             free_HDB_EncTypeList(ent->entry.etypes);
 152         if (ret == 0)
 153             ret = decode_HDB_EncTypeList(tl_data->tl_data_contents,
 154                                          tl_data->tl_data_length,
 155                                          ent->entry.etypes, NULL);
 156         if (ret)
 157             return KADM5_BAD_TL_TYPE;
 158     } else if (tl_data->tl_data_type == KRB5_TL_ALIASES) {
 159         return 0;
 160     } else {
 161         return KADM5_BAD_TL_TYPE;
 162     }
 163     return ret;
 164 }
 165
 166 static void
 167 default_flags(hdb_entry_ex *ent)
 168 {
 169     ent->entry.flags.client      = 1;
 170     ent->entry.flags.server      = 1;
 171     ent->entry.flags.forwardable = 1;
 172     ent->entry.flags.proxiable   = 1;
 173     ent->entry.flags.renewable   = 1;
 174     ent->entry.flags.postdate    = 1;
 175 }
 176
 177
 178 /*
 179  * Create the hdb entry `ent' based on data from `princ' with
 180  * `princ_mask' specifying what fields to be gotten from there and
 181  * `mask' specifying what fields we want filled in.
 182  */
 183
 184 kadm5_ret_t
 185 _kadm5_setup_entry(kadm5_server_context *context,
 186                    hdb_entry_ex *ent,
 187                    uint32_t mask,
 188                    kadm5_principal_ent_t princ,
 189                    uint32_t princ_mask,
 190                    kadm5_principal_ent_t def,
 191                    uint32_t def_mask)
 192 {
 193     if(mask & KADM5_PRINC_EXPIRE_TIME
 194        && princ_mask & KADM5_PRINC_EXPIRE_TIME) {
 195         if (princ->princ_expire_time)
 196             set_value(ent->entry.valid_end, princ->princ_expire_time);
 197         else
 198             set_null(ent->entry.valid_end);
 199     }
 200     if(mask & KADM5_PW_EXPIRATION
 201        && princ_mask & KADM5_PW_EXPIRATION) {
 202         if (princ->pw_expiration)
 203             set_value(ent->entry.pw_end, princ->pw_expiration);
 204         else
 205             set_null(ent->entry.pw_end);
 206     }
 207     if(mask & KADM5_ATTRIBUTES) {
 208         if (princ_mask & KADM5_ATTRIBUTES) {
 209             attr_to_flags(princ->attributes, &ent->entry.flags);
 210         } else if(def_mask & KADM5_ATTRIBUTES) {
 211             attr_to_flags(def->attributes, &ent->entry.flags);
 212             ent->entry.flags.invalid = 0;
 213         } else {
 214             default_flags(ent);
 215         }
 216     }
 217
 218     if(mask & KADM5_MAX_LIFE) {
 219         if(princ_mask & KADM5_MAX_LIFE) {
 220             if(princ->max_life)
 221               set_value(ent->entry.max_life, princ->max_life);
 222             else
 223               set_null(ent->entry.max_life);
 224         } else if(def_mask & KADM5_MAX_LIFE) {
 225             if(def->max_life)
 226               set_value(ent->entry.max_life, def->max_life);
 227             else
 228               set_null(ent->entry.max_life);
 229         }
 230     }
 231     if(mask & KADM5_KVNO
 232        && (princ_mask & KADM5_KVNO)) {
 233         krb5_error_code ret;
 234
 235         ret = hdb_change_kvno(context->context, princ->kvno, &ent->entry);
 236         if (ret && ret != HDB_ERR_KVNO_NOT_FOUND)
 237             return ret;
 238         ent->entry.kvno = princ->kvno; /* force it */
 239     }
 240     if(mask & KADM5_MAX_RLIFE) {
 241         if(princ_mask & KADM5_MAX_RLIFE) {
 242           if(princ->max_renewable_life)
 243             set_value(ent->entry.max_renew, princ->max_renewable_life);
 244           else
 245             set_null(ent->entry.max_renew);
 246         } else if(def_mask & KADM5_MAX_RLIFE) {
 247           if(def->max_renewable_life)
 248             set_value(ent->entry.max_renew, def->max_renewable_life);
 249           else
 250             set_null(ent->entry.max_renew);
 251         }
 252     }
 253     if(mask & KADM5_KEY_DATA
 254        && princ_mask & KADM5_KEY_DATA) {
 255         _kadm5_set_keys2(context, &ent->entry,
 256                          princ->n_key_data, princ->key_data);
 257     }
 258     if(mask & KADM5_TL_DATA) {
 259         krb5_tl_data *tl;
 260
 261         for (tl = princ->tl_data; tl != NULL; tl = tl->tl_data_next) {
 262             kadm5_ret_t ret;
 263             ret = perform_tl_data(context->context, context->db, ent, tl);
 264             if (ret)
 265                 return ret;
 266         }
 267     }
 268     if(mask & KADM5_FAIL_AUTH_COUNT) {
 269         /* XXX */
 270     }
 271     return 0;
 272 }