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 =             1; /* XXX */
  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 }
  64
  65 /*
  66  * Modify the `ent' according to `tl_data'.
  67  */
  68
  69 static kadm5_ret_t
  70 perform_tl_data(krb5_context context,
  71                 HDB *db,
  72                 hdb_entry_ex *ent,
  73                 const krb5_tl_data *tl_data)
  74 {
  75     kadm5_ret_t ret = 0;
  76
  77     if (tl_data->tl_data_type == KRB5_TL_PASSWORD) {
  78         heim_utf8_string pw = tl_data->tl_data_contents;
  79
  80         if (pw[tl_data->tl_data_length] != '\0')
  81             return KADM5_BAD_TL_TYPE;
  82
  83         ret = hdb_entry_set_password(context, db, &ent->entry, pw);
  84
  85     } else if (tl_data->tl_data_type == KRB5_TL_LAST_PWD_CHANGE) {
  86         unsigned char *s;
  87         time_t t;
  88
  89         if (tl_data->tl_data_length != 4)
  90             return KADM5_BAD_TL_TYPE;
  91
  92         s = tl_data->tl_data_contents;
  93
  94         t = s[0] | (s[1] << 8) | (s[2] << 16) | (s[3] << 24);
  95
  96         ret = hdb_entry_set_pw_change_time(context, &ent->entry, t);
  97
  98     } else if (tl_data->tl_data_type == KRB5_TL_EXTENSION) {
  99         HDB_extension ext;
 100
 101         ret = decode_HDB_extension(tl_data->tl_data_contents,
 102                                    tl_data->tl_data_length,
 103                                    &ext,
 104                                    NULL);
 105         if (ret)
 106             return KADM5_BAD_TL_TYPE;
 107
 108         ret = hdb_replace_extension(context, &ent->entry, &ext);
 109         free_HDB_extension(&ext);
 110     } else {
 111         return KADM5_BAD_TL_TYPE;
 112     }
 113     return ret;
 114 }
 115
 116 static void
 117 default_flags(hdb_entry_ex *ent, int server)
 118 {
 119     ent->entry.flags.client      = 1;
 120     ent->entry.flags.server      = !!server;
 121     ent->entry.flags.forwardable = 1;
 122     ent->entry.flags.proxiable   = 1;
 123     ent->entry.flags.renewable   = 1;
 124     ent->entry.flags.postdate    = 1;
 125 }
 126
 127
 128 /*
 129  * Create the hdb entry `ent' based on data from `princ' with
 130  * `princ_mask' specifying what fields to be gotten from there and
 131  * `mask' specifying what fields we want filled in.
 132  */
 133
 134 kadm5_ret_t
 135 _kadm5_setup_entry(kadm5_server_context *context,
 136                    hdb_entry_ex *ent,
 137                    uint32_t mask,
 138                    kadm5_principal_ent_t princ,
 139                    uint32_t princ_mask,
 140                    kadm5_principal_ent_t def,
 141                    uint32_t def_mask)
 142 {
 143     if(mask & KADM5_PRINC_EXPIRE_TIME
 144        && princ_mask & KADM5_PRINC_EXPIRE_TIME) {
 145         if (princ->princ_expire_time)
 146             set_value(ent->entry.valid_end, princ->princ_expire_time);
 147         else
 148             set_null(ent->entry.valid_end);
 149     }
 150     if(mask & KADM5_PW_EXPIRATION
 151        && princ_mask & KADM5_PW_EXPIRATION) {
 152         if (princ->pw_expiration)
 153             set_value(ent->entry.pw_end, princ->pw_expiration);
 154         else
 155             set_null(ent->entry.pw_end);
 156     }
 157     if(mask & KADM5_ATTRIBUTES) {
 158         if (princ_mask & KADM5_ATTRIBUTES) {
 159             attr_to_flags(princ->attributes, &ent->entry.flags);
 160         } else if(def_mask & KADM5_ATTRIBUTES) {
 161             attr_to_flags(def->attributes, &ent->entry.flags);
 162             ent->entry.flags.invalid = 0;
 163         } else {
 164             default_flags(ent, 1);
 165         }
 166     }
 167
 168     if(mask & KADM5_MAX_LIFE) {
 169         if(princ_mask & KADM5_MAX_LIFE) {
 170             if(princ->max_life)
 171               set_value(ent->entry.max_life, princ->max_life);
 172             else
 173               set_null(ent->entry.max_life);
 174         } else if(def_mask & KADM5_MAX_LIFE) {
 175             if(def->max_life)
 176               set_value(ent->entry.max_life, def->max_life);
 177             else
 178               set_null(ent->entry.max_life);
 179         }
 180     }
 181     if(mask & KADM5_KVNO
 182        && (princ_mask & KADM5_KVNO)) {
 183         krb5_error_code ret;
 184
 185         ret = hdb_change_kvno(context->context, princ->kvno, &ent->entry);
 186         if (ret && ret != HDB_ERR_KVNO_NOT_FOUND)
 187             return ret;
 188         ent->entry.kvno = princ->kvno; /* force it */
 189     }
 190     if(mask & KADM5_MAX_RLIFE) {
 191         if(princ_mask & KADM5_MAX_RLIFE) {
 192           if(princ->max_renewable_life)
 193             set_value(ent->entry.max_renew, princ->max_renewable_life);
 194           else
 195             set_null(ent->entry.max_renew);
 196         } else if(def_mask & KADM5_MAX_RLIFE) {
 197           if(def->max_renewable_life)
 198             set_value(ent->entry.max_renew, def->max_renewable_life);
 199           else
 200             set_null(ent->entry.max_renew);
 201         }
 202     }
 203     if(mask & KADM5_KEY_DATA
 204        && princ_mask & KADM5_KEY_DATA) {
 205         _kadm5_set_keys2(context, &ent->entry,
 206                          princ->n_key_data, princ->key_data);
 207     }
 208     if(mask & KADM5_TL_DATA) {
 209         krb5_tl_data *tl;
 210
 211         for (tl = princ->tl_data; tl != NULL; tl = tl->tl_data_next) {
 212             kadm5_ret_t ret;
 213             ret = perform_tl_data(context->context, context->db, ent, tl);
 214             if (ret)
 215                 return ret;
 216         }
 217     }
 218     if(mask & KADM5_FAIL_AUTH_COUNT) {
 219         /* XXX */
 220     }
 221     return 0;
 222 }