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     /* HW_AUTH */
  55     flags->server =             !(attr & KRB5_KDB_DISALLOW_SVR);
  56     flags->change_pw =         !!(attr & KRB5_KDB_PWCHANGE_SERVICE);
  57     flags->client =             1; /* XXX */
  58     flags->ok_as_delegate =    !!(attr & KRB5_KDB_OK_AS_DELEGATE);
  59     flags->trusted_for_delegation = !!(attr & KRB5_KDB_TRUSTED_FOR_DELEGATION);
  60     flags->allow_kerberos4 =   !!(attr & KRB5_KDB_ALLOW_KERBEROS4);
  61     flags->allow_digest =      !!(attr & KRB5_KDB_ALLOW_DIGEST);
  62 }
  63
  64 /*
  65  * Modify the `ent' according to `tl_data'.
  66  */
  67
  68 static kadm5_ret_t
  69 perform_tl_data(krb5_context context,
  70                 HDB *db,
  71                 hdb_entry_ex *ent,
  72                 const krb5_tl_data *tl_data)
  73 {
  74     kadm5_ret_t ret = 0;
  75
  76     if (tl_data->tl_data_type == KRB5_TL_PASSWORD) {
  77         heim_utf8_string pw = tl_data->tl_data_contents;
  78
  79         if (pw[tl_data->tl_data_length] != '\0')
  80             return KADM5_BAD_TL_TYPE;
  81
  82         ret = hdb_entry_set_password(context, db, &ent->entry, pw);
  83
  84     } else if (tl_data->tl_data_type == KRB5_TL_LAST_PWD_CHANGE) {
  85         unsigned char *s;
  86         time_t t;
  87
  88         if (tl_data->tl_data_length != 4)
  89             return KADM5_BAD_TL_TYPE;
  90
  91         s = tl_data->tl_data_contents;
  92
  93         t = s[0] | (s[1] << 8) | (s[2] << 16) | (s[3] << 24);
  94
  95         ret = hdb_entry_set_pw_change_time(context, &ent->entry, t);
  96
  97     } else if (tl_data->tl_data_type == KRB5_TL_EXTENSION) {
  98         HDB_extension ext;
  99
 100         ret = decode_HDB_extension(tl_data->tl_data_contents,
 101                                    tl_data->tl_data_length,
 102                                    &ext,
 103                                    NULL);
 104         if (ret)
 105             return KADM5_BAD_TL_TYPE;
 106
 107         ret = hdb_replace_extension(context, &ent->entry, &ext);
 108         free_HDB_extension(&ext);
 109     } else {
 110         return KADM5_BAD_TL_TYPE;
 111     }
 112     return ret;
 113 }
 114
 115 static void
 116 default_flags(hdb_entry_ex *ent, int server)
 117 {
 118     ent->entry.flags.client      = 1;
 119     ent->entry.flags.server      = !!server;
 120     ent->entry.flags.forwardable = 1;
 121     ent->entry.flags.proxiable   = 1;
 122     ent->entry.flags.renewable   = 1;
 123     ent->entry.flags.postdate    = 1;
 124 }
 125
 126
 127 /*
 128  * Create the hdb entry `ent' based on data from `princ' with
 129  * `princ_mask' specifying what fields to be gotten from there and
 130  * `mask' specifying what fields we want filled in.
 131  */
 132
 133 kadm5_ret_t
 134 _kadm5_setup_entry(kadm5_server_context *context,
 135                    hdb_entry_ex *ent,
 136                    uint32_t mask,
 137                    kadm5_principal_ent_t princ,
 138                    uint32_t princ_mask,
 139                    kadm5_principal_ent_t def,
 140                    uint32_t def_mask)
 141 {
 142     if(mask & KADM5_PRINC_EXPIRE_TIME
 143        && princ_mask & KADM5_PRINC_EXPIRE_TIME) {
 144         if (princ->princ_expire_time)
 145             set_value(ent->entry.valid_end, princ->princ_expire_time);
 146         else
 147             set_null(ent->entry.valid_end);
 148     }
 149     if(mask & KADM5_PW_EXPIRATION
 150        && princ_mask & KADM5_PW_EXPIRATION) {
 151         if (princ->pw_expiration)
 152             set_value(ent->entry.pw_end, princ->pw_expiration);
 153         else
 154             set_null(ent->entry.pw_end);
 155     }
 156     if(mask & KADM5_ATTRIBUTES) {
 157         if (princ_mask & KADM5_ATTRIBUTES) {
 158             attr_to_flags(princ->attributes, &ent->entry.flags);
 159         } else if(def_mask & KADM5_ATTRIBUTES) {
 160             attr_to_flags(def->attributes, &ent->entry.flags);
 161             ent->entry.flags.invalid = 0;
 162         } else {
 163             default_flags(ent, 1);
 164         }
 165     }
 166
 167     if(mask & KADM5_MAX_LIFE) {
 168         if(princ_mask & KADM5_MAX_LIFE) {
 169             if(princ->max_life)
 170               set_value(ent->entry.max_life, princ->max_life);
 171             else
 172               set_null(ent->entry.max_life);
 173         } else if(def_mask & KADM5_MAX_LIFE) {
 174             if(def->max_life)
 175               set_value(ent->entry.max_life, def->max_life);
 176             else
 177               set_null(ent->entry.max_life);
 178         }
 179     }
 180     if(mask & KADM5_KVNO
 181        && princ_mask & KADM5_KVNO)
 182         ent->entry.kvno = princ->kvno;
 183     if(mask & KADM5_MAX_RLIFE) {
 184         if(princ_mask & KADM5_MAX_RLIFE) {
 185           if(princ->max_renewable_life)
 186             set_value(ent->entry.max_renew, princ->max_renewable_life);
 187           else
 188             set_null(ent->entry.max_renew);
 189         } else if(def_mask & KADM5_MAX_RLIFE) {
 190           if(def->max_renewable_life)
 191             set_value(ent->entry.max_renew, def->max_renewable_life);
 192           else
 193             set_null(ent->entry.max_renew);
 194         }
 195     }
 196     if(mask & KADM5_KEY_DATA
 197        && princ_mask & KADM5_KEY_DATA) {
 198         _kadm5_set_keys2(context, &ent->entry,
 199                          princ->n_key_data, princ->key_data);
 200     }
 201     if(mask & KADM5_TL_DATA) {
 202         krb5_tl_data *tl;
 203
 204         for (tl = princ->tl_data; tl != NULL; tl = tl->tl_data_next) {
 205             kadm5_ret_t ret;
 206             ret = perform_tl_data(context->context, context->db, ent, tl);
 207             if (ret)
 208                 return ret;
 209         }
 210     }
 211     if(mask & KADM5_FAIL_AUTH_COUNT) {
 212         /* XXX */
 213     }
 214     return 0;
 215 }