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     flags->auth_data_reqd =    !!(attr & KRB5_KDB_AUTH_DATA_REQUIRED);
  68
  69     if (flags->no_auth_data_reqd && flags->auth_data_reqd)
  70         flags->auth_data_reqd = 0;
  71 }
  72
  73 /*
  74  * Modify the `ent' according to `tl_data'.
  75  */
  76
  77 static kadm5_ret_t
  78 perform_tl_data(krb5_context context,
  79                 HDB *db,
  80                 hdb_entry *ent,
  81                 const krb5_tl_data *tl_data)
  82 {
  83     kadm5_ret_t ret = 0;
  84
  85     if (tl_data->tl_data_type == KRB5_TL_PASSWORD) {
  86         heim_utf8_string pw = tl_data->tl_data_contents;
  87
  88         if (pw[tl_data->tl_data_length] != '\0')
  89             return KADM5_BAD_TL_TYPE;
  90
  91         ret = hdb_entry_set_password(context, db, ent, pw);
  92
  93     } else if (tl_data->tl_data_type == KRB5_TL_LAST_PWD_CHANGE) {
  94         unsigned long t;
  95         unsigned char *s;
  96
  97         if (tl_data->tl_data_length != 4)
  98             return KADM5_BAD_TL_TYPE;
  99
 100         s = tl_data->tl_data_contents;
 101
 102         (void) _krb5_get_int(s, &t, tl_data->tl_data_length);
 103         ret = hdb_entry_set_pw_change_time(context, ent, t);
 104
 105     } else if (tl_data->tl_data_type == KRB5_TL_KEY_ROTATION) {
 106         HDB_Ext_KeyRotation *prev_kr = 0;
 107         HDB_extension *prev_ext;
 108         HDB_extension ext;
 109
 110         ext.mandatory = 0;
 111         ext.data.element = choice_HDB_extension_data_key_rotation;
 112         prev_ext = hdb_find_extension(ent, ext.data.element);
 113         if (prev_ext)
 114             prev_kr = &prev_ext->data.u.key_rotation;
 115         ret = decode_HDB_Ext_KeyRotation(tl_data->tl_data_contents,
 116                                          tl_data->tl_data_length,
 117                                          &ext.data.u.key_rotation, NULL);
 118         if (ret == 0)
 119             ret = hdb_validate_key_rotations(context, prev_kr,
 120                                              &ext.data.u.key_rotation);
 121         if (ret == 0)
 122             ret = hdb_replace_extension(context, ent, &ext);
 123         free_HDB_extension(&ext);
 124     } else if (tl_data->tl_data_type == KRB5_TL_EXTENSION) {
 125         HDB_extension ext;
 126
 127         ret = decode_HDB_extension(tl_data->tl_data_contents,
 128                                    tl_data->tl_data_length,
 129                                    &ext,
 130                                    NULL);
 131         if (ret)
 132             return KADM5_BAD_TL_TYPE;
 133
 134         if (ext.data.element == choice_HDB_extension_data_key_rotation) {
 135             HDB_extension *prev_ext = hdb_find_extension(ent,
 136                                                          ext.data.element);
 137             HDB_Ext_KeyRotation *prev_kr = 0;
 138
 139             if (prev_ext)
 140                 prev_kr = &prev_ext->data.u.key_rotation;
 141             ret = hdb_validate_key_rotations(context, prev_kr,
 142                                              &ext.data.u.key_rotation);
 143         }
 144         if (ret)
 145             ret = KADM5_BAD_TL_TYPE; /* XXX Need new error code */
 146         if (ret == 0)
 147             ret = hdb_replace_extension(context, ent, &ext);
 148         free_HDB_extension(&ext);
 149     } else if (tl_data->tl_data_type == KRB5_TL_ETYPES) {
 150         if (!ent->etypes &&
 151             (ent->etypes = calloc(1,
 152                                         sizeof(ent->etypes[0]))) == NULL)
 153             ret = krb5_enomem(context);
 154         if (ent->etypes)
 155             free_HDB_EncTypeList(ent->etypes);
 156         if (ret == 0)
 157             ret = decode_HDB_EncTypeList(tl_data->tl_data_contents,
 158                                          tl_data->tl_data_length,
 159                                          ent->etypes, NULL);
 160         if (ret)
 161             return KADM5_BAD_TL_TYPE;
 162     } else if (tl_data->tl_data_type == KRB5_TL_ALIASES) {
 163         return 0;
 164     } else {
 165         return KADM5_BAD_TL_TYPE;
 166     }
 167     return ret;
 168 }
 169
 170 static void
 171 default_flags(hdb_entry *ent)
 172 {
 173     ent->flags.client      = 1;
 174     ent->flags.server      = 1;
 175     ent->flags.forwardable = 1;
 176     ent->flags.proxiable   = 1;
 177     ent->flags.renewable   = 1;
 178     ent->flags.postdate    = 1;
 179 }
 180
 181
 182 /*
 183  * Create the hdb entry `ent' based on data from `princ' with
 184  * `princ_mask' specifying what fields to be gotten from there and
 185  * `mask' specifying what fields we want filled in.
 186  */
 187
 188 kadm5_ret_t
 189 _kadm5_setup_entry(kadm5_server_context *context,
 190                    hdb_entry *ent,
 191                    uint32_t mask,
 192                    kadm5_principal_ent_t princ,
 193                    uint32_t princ_mask,
 194                    kadm5_principal_ent_t def,
 195                    uint32_t def_mask)
 196 {
 197     if(mask & KADM5_PRINC_EXPIRE_TIME
 198        && princ_mask & KADM5_PRINC_EXPIRE_TIME) {
 199         if (princ->princ_expire_time)
 200             set_value(ent->valid_end, princ->princ_expire_time);
 201         else
 202             set_null(ent->valid_end);
 203     }
 204     if(mask & KADM5_PW_EXPIRATION
 205        && princ_mask & KADM5_PW_EXPIRATION) {
 206         if (princ->pw_expiration)
 207             set_value(ent->pw_end, princ->pw_expiration);
 208         else
 209             set_null(ent->pw_end);
 210     }
 211     if(mask & KADM5_ATTRIBUTES) {
 212         if (princ_mask & KADM5_ATTRIBUTES) {
 213             attr_to_flags(princ->attributes, &ent->flags);
 214         } else if(def_mask & KADM5_ATTRIBUTES) {
 215             attr_to_flags(def->attributes, &ent->flags);
 216             ent->flags.invalid = 0;
 217         } else {
 218             default_flags(ent);
 219         }
 220     }
 221
 222     if(mask & KADM5_MAX_LIFE) {
 223         if(princ_mask & KADM5_MAX_LIFE) {
 224             if(princ->max_life)
 225               set_value(ent->max_life, princ->max_life);
 226             else
 227               set_null(ent->max_life);
 228         } else if(def_mask & KADM5_MAX_LIFE) {
 229             if(def->max_life)
 230               set_value(ent->max_life, def->max_life);
 231             else
 232               set_null(ent->max_life);
 233         }
 234     }
 235     if(mask & KADM5_KVNO
 236        && (princ_mask & KADM5_KVNO)) {
 237         krb5_error_code ret;
 238
 239         ret = hdb_change_kvno(context->context, princ->kvno, ent);
 240         if (ret && ret != HDB_ERR_KVNO_NOT_FOUND)
 241             return ret;
 242         ent->kvno = princ->kvno; /* force it */
 243     }
 244     if(mask & KADM5_MAX_RLIFE) {
 245         if(princ_mask & KADM5_MAX_RLIFE) {
 246           if(princ->max_renewable_life)
 247             set_value(ent->max_renew, princ->max_renewable_life);
 248           else
 249             set_null(ent->max_renew);
 250         } else if(def_mask & KADM5_MAX_RLIFE) {
 251           if(def->max_renewable_life)
 252             set_value(ent->max_renew, def->max_renewable_life);
 253           else
 254             set_null(ent->max_renew);
 255         }
 256     }
 257     if(mask & KADM5_KEY_DATA
 258        && princ_mask & KADM5_KEY_DATA) {
 259         _kadm5_set_keys2(context, ent,
 260                          princ->n_key_data, princ->key_data);
 261     }
 262     if(mask & KADM5_TL_DATA) {
 263         krb5_tl_data *tl;
 264
 265         for (tl = princ->tl_data; tl != NULL; tl = tl->tl_data_next) {
 266             kadm5_ret_t ret;
 267             ret = perform_tl_data(context->context, context->db, ent, tl);
 268             if (ret)
 269                 return ret;
 270         }
 271     }
 272     if(mask & KADM5_FAIL_AUTH_COUNT) {
 273         /* XXX */
 274     }
 275     return 0;
 276 }