crypto/dist/heimdal/lib/kadm5/get_s.c

   1 /*
   2  * Copyright (c) 1997 - 2006 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 "kadm5_locl.h"
  35
  36 __RCSID("$Heimdal: get_s.c 21745 2007-07-31 16:11:25Z lha $"
  37         "$NetBSD$");
  38
  39 static kadm5_ret_t
  40 add_tl_data(kadm5_principal_ent_t ent, int16_t type,
  41             const void *data, size_t size)
  42 {
  43     krb5_tl_data *tl;
  44
  45     tl = calloc(1, sizeof(*tl));
  46     if (tl == NULL)
  47         return _kadm5_error_code(ENOMEM);
  48
  49     tl->tl_data_type = type;
  50     tl->tl_data_length = size;
  51     tl->tl_data_contents = malloc(size);
  52     if (tl->tl_data_contents == NULL) {
  53         free(tl);
  54         return _kadm5_error_code(ENOMEM);
  55     }
  56     memcpy(tl->tl_data_contents, data, size);
  57
  58     tl->tl_data_next = ent->tl_data;
  59     ent->tl_data = tl;
  60     ent->n_tl_data++;
  61
  62     return 0;
  63 }
  64
  65 krb5_ssize_t KRB5_LIB_FUNCTION
  66 _krb5_put_int(void *buffer, unsigned long value, size_t size); /* XXX */
  67
  68 kadm5_ret_t
  69 kadm5_s_get_principal(void *server_handle,
  70                       krb5_principal princ,
  71                       kadm5_principal_ent_t out,
  72                       uint32_t mask)
  73 {
  74     kadm5_server_context *context = server_handle;
  75     kadm5_ret_t ret;
  76     hdb_entry_ex ent;
  77
  78     memset(&ent, 0, sizeof(ent));
  79     ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0);
  80     if(ret)
  81         return ret;
  82     ret = context->db->hdb_fetch(context->context, context->db, princ,
  83                                  HDB_F_DECRYPT|HDB_F_GET_ANY, &ent);
  84     context->db->hdb_close(context->context, context->db);
  85     if(ret)
  86         return _kadm5_error_code(ret);
  87
  88     memset(out, 0, sizeof(*out));
  89     if(mask & KADM5_PRINCIPAL)
  90         ret  = krb5_copy_principal(context->context, ent.entry.principal,
  91                                    &out->principal);
  92     if(ret)
  93         goto out;
  94     if(mask & KADM5_PRINC_EXPIRE_TIME && ent.entry.valid_end)
  95         out->princ_expire_time = *ent.entry.valid_end;
  96     if(mask & KADM5_PW_EXPIRATION && ent.entry.pw_end)
  97         out->pw_expiration = *ent.entry.pw_end;
  98     if(mask & KADM5_LAST_PWD_CHANGE)
  99         hdb_entry_get_pw_change_time(&ent.entry, &out->last_pwd_change);
 100     if(mask & KADM5_ATTRIBUTES){
 101         out->attributes |= ent.entry.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED;
 102         out->attributes |= ent.entry.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE;
 103         out->attributes |= ent.entry.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0;
 104         out->attributes |= ent.entry.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE;
 105         out->attributes |= ent.entry.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE;
 106         out->attributes |= ent.entry.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0;
 107         out->attributes |= ent.entry.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0;
 108         out->attributes |= ent.entry.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR;
 109         out->attributes |= ent.entry.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0;
 110         out->attributes |= ent.entry.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0;
 111         out->attributes |= ent.entry.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0;
 112         out->attributes |= ent.entry.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0;
 113         out->attributes |= ent.entry.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0;
 114     }
 115     if(mask & KADM5_MAX_LIFE) {
 116         if(ent.entry.max_life)
 117             out->max_life = *ent.entry.max_life;
 118         else
 119             out->max_life = INT_MAX;
 120     }
 121     if(mask & KADM5_MOD_TIME) {
 122         if(ent.entry.modified_by)
 123             out->mod_date = ent.entry.modified_by->time;
 124         else
 125             out->mod_date = ent.entry.created_by.time;
 126     }
 127     if(mask & KADM5_MOD_NAME) {
 128         if(ent.entry.modified_by) {
 129             if (ent.entry.modified_by->principal != NULL)
 130                 ret = krb5_copy_principal(context->context,
 131                                           ent.entry.modified_by->principal,
 132                                           &out->mod_name);
 133         } else if(ent.entry.created_by.principal != NULL)
 134             ret = krb5_copy_principal(context->context,
 135                                       ent.entry.created_by.principal,
 136                                       &out->mod_name);
 137         else
 138             out->mod_name = NULL;
 139     }
 140     if(ret)
 141         goto out;
 142
 143     if(mask & KADM5_KVNO)
 144         out->kvno = ent.entry.kvno;
 145     if(mask & KADM5_MKVNO) {
 146         int n;
 147         out->mkvno = 0; /* XXX */
 148         for(n = 0; n < ent.entry.keys.len; n++)
 149             if(ent.entry.keys.val[n].mkvno) {
 150                 out->mkvno = *ent.entry.keys.val[n].mkvno; /* XXX this isn't right */
 151                 break;
 152             }
 153     }
 154     if(mask & KADM5_AUX_ATTRIBUTES)
 155         /* XXX implement */;
 156     if(mask & KADM5_POLICY)
 157         out->policy = NULL;
 158     if(mask & KADM5_MAX_RLIFE) {
 159         if(ent.entry.max_renew)
 160             out->max_renewable_life = *ent.entry.max_renew;
 161         else
 162             out->max_renewable_life = INT_MAX;
 163     }
 164     if(mask & KADM5_LAST_SUCCESS)
 165         /* XXX implement */;
 166     if(mask & KADM5_LAST_FAILED)
 167         /* XXX implement */;
 168     if(mask & KADM5_FAIL_AUTH_COUNT)
 169         /* XXX implement */;
 170     if(mask & KADM5_KEY_DATA){
 171         int i;
 172         Key *key;
 173         krb5_key_data *kd;
 174         krb5_salt salt;
 175         krb5_data *sp;
 176         krb5_get_pw_salt(context->context, ent.entry.principal, &salt);
 177         out->key_data = malloc(ent.entry.keys.len * sizeof(*out->key_data));
 178         if (out->key_data == NULL) {
 179             ret = ENOMEM;
 180             goto out;
 181         }
 182         for(i = 0; i < ent.entry.keys.len; i++){
 183             key = &ent.entry.keys.val[i];
 184             kd = &out->key_data[i];
 185             kd->key_data_ver = 2;
 186             kd->key_data_kvno = ent.entry.kvno;
 187             kd->key_data_type[0] = key->key.keytype;
 188             if(key->salt)
 189                 kd->key_data_type[1] = key->salt->type;
 190             else
 191                 kd->key_data_type[1] = KRB5_PADATA_PW_SALT;
 192             /* setup key */
 193             kd->key_data_length[0] = key->key.keyvalue.length;
 194             kd->key_data_contents[0] = malloc(kd->key_data_length[0]);
 195             if(kd->key_data_contents[0] == NULL){
 196                 ret = ENOMEM;
 197                 break;
 198             }
 199             memcpy(kd->key_data_contents[0], key->key.keyvalue.data,
 200                    kd->key_data_length[0]);
 201             /* setup salt */
 202             if(key->salt)
 203                 sp = &key->salt->salt;
 204             else
 205                 sp = &salt.saltvalue;
 206             kd->key_data_length[1] = sp->length;
 207             kd->key_data_contents[1] = malloc(kd->key_data_length[1]);
 208             if(kd->key_data_length[1] != 0
 209                && kd->key_data_contents[1] == NULL) {
 210                 memset(kd->key_data_contents[0], 0, kd->key_data_length[0]);
 211                 ret = ENOMEM;
 212                 break;
 213             }
 214             memcpy(kd->key_data_contents[1], sp->data, kd->key_data_length[1]);
 215             out->n_key_data = i + 1;
 216         }
 217         krb5_free_salt(context->context, salt);
 218     }
 219     if(ret){
 220         kadm5_free_principal_ent(context, out);
 221         goto out;
 222     }
 223     if(mask & KADM5_TL_DATA) {
 224         time_t last_pw_expire;
 225         const HDB_Ext_Aliases *aliases;
 226
 227         ret = hdb_entry_get_pw_change_time(&ent.entry, &last_pw_expire);
 228         if (ret == 0 && last_pw_expire) {
 229             unsigned char buf[4];
 230             _krb5_put_int(buf, last_pw_expire, sizeof(buf));
 231             ret = add_tl_data(out, KRB5_TL_LAST_PWD_CHANGE, buf, sizeof(buf));
 232         }
 233         if(ret){
 234             kadm5_free_principal_ent(context, out);
 235             goto out;
 236         }
 237         /*
 238          * If the client was allowed to get key data, let it have the
 239          * password too.
 240          */
 241         if(mask & KADM5_KEY_DATA) {
 242             heim_utf8_string pw;
 243
 244             ret = hdb_entry_get_password(context->context,
 245                                          context->db, &ent.entry, &pw);
 246             if (ret == 0) {
 247                 ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
 248                 free(pw);
 249             }
 250             krb5_clear_error_string(context->context);
 251             ret = 0;
 252         }
 253
 254         ret = hdb_entry_get_aliases(&ent.entry, &aliases);
 255         if (ret == 0 && aliases) {
 256             krb5_data buf;
 257             size_t len;
 258
 259             ASN1_MALLOC_ENCODE(HDB_Ext_Aliases, buf.data, buf.length,
 260                                aliases, &len, ret);
 261             if (ret) {
 262                 kadm5_free_principal_ent(context, out);
 263                 goto out;
 264             }
 265             if (len != buf.length)
 266                 krb5_abortx(context->context,
 267                             "internal ASN.1 encoder error");
 268             ret = add_tl_data(out, KRB5_TL_ALIASES, buf.data, buf.length);
 269             free(buf.data);
 270             if (ret) {
 271                 kadm5_free_principal_ent(context, out);
 272                 goto out;
 273             }
 274         }
 275         if(ret){
 276             kadm5_free_principal_ent(context, out);
 277             goto out;
 278         }
 279
 280     }
 281 out:
 282     hdb_free_entry(context->context, &ent);
 283
 284     return _kadm5_error_code(ret);
 285 }