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

   1 /*      $NetBSD: get_s.c,v 1.1.1.2 2014/04/24 12:45:48 pettai Exp $     */
   2
   3 /*
   4  * Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * 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("NetBSD");
  39
  40 static kadm5_ret_t
  41 add_tl_data(kadm5_principal_ent_t ent, int16_t type,
  42             const void *data, size_t size)
  43 {
  44     krb5_tl_data *tl;
  45
  46     tl = calloc(1, sizeof(*tl));
  47     if (tl == NULL)
  48         return _kadm5_error_code(ENOMEM);
  49
  50     tl->tl_data_type = type;
  51     tl->tl_data_length = size;
  52     tl->tl_data_contents = malloc(size);
  53     if (tl->tl_data_contents == NULL && size != 0) {
  54         free(tl);
  55         return _kadm5_error_code(ENOMEM);
  56     }
  57     memcpy(tl->tl_data_contents, data, size);
  58
  59     tl->tl_data_next = ent->tl_data;
  60     ent->tl_data = tl;
  61     ent->n_tl_data++;
  62
  63     return 0;
  64 }
  65
  66 KRB5_LIB_FUNCTION krb5_ssize_t KRB5_LIB_CALL
  67 _krb5_put_int(void *buffer, unsigned long value, size_t size); /* XXX */
  68
  69 kadm5_ret_t
  70 kadm5_s_get_principal(void *server_handle,
  71                       krb5_principal princ,
  72                       kadm5_principal_ent_t out,
  73                       uint32_t mask)
  74 {
  75     kadm5_server_context *context = server_handle;
  76     kadm5_ret_t ret;
  77     hdb_entry_ex ent;
  78
  79     memset(&ent, 0, sizeof(ent));
  80     ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0);
  81     if(ret)
  82         return ret;
  83     ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
  84                                       HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
  85     context->db->hdb_close(context->context, context->db);
  86     if(ret)
  87         return _kadm5_error_code(ret);
  88
  89     memset(out, 0, sizeof(*out));
  90     if(mask & KADM5_PRINCIPAL)
  91         ret  = krb5_copy_principal(context->context, ent.entry.principal,
  92                                    &out->principal);
  93     if(ret)
  94         goto out;
  95     if(mask & KADM5_PRINC_EXPIRE_TIME && ent.entry.valid_end)
  96         out->princ_expire_time = *ent.entry.valid_end;
  97     if(mask & KADM5_PW_EXPIRATION && ent.entry.pw_end)
  98         out->pw_expiration = *ent.entry.pw_end;
  99     if(mask & KADM5_LAST_PWD_CHANGE)
 100         hdb_entry_get_pw_change_time(&ent.entry, &out->last_pwd_change);
 101     if(mask & KADM5_ATTRIBUTES){
 102         out->attributes |= ent.entry.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED;
 103         out->attributes |= ent.entry.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE;
 104         out->attributes |= ent.entry.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0;
 105         out->attributes |= ent.entry.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE;
 106         out->attributes |= ent.entry.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE;
 107         out->attributes |= ent.entry.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0;
 108         out->attributes |= ent.entry.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0;
 109         out->attributes |= ent.entry.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR;
 110         out->attributes |= ent.entry.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0;
 111         out->attributes |= ent.entry.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0;
 112         out->attributes |= ent.entry.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0;
 113         out->attributes |= ent.entry.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0;
 114         out->attributes |= ent.entry.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0;
 115     }
 116     if(mask & KADM5_MAX_LIFE) {
 117         if(ent.entry.max_life)
 118             out->max_life = *ent.entry.max_life;
 119         else
 120             out->max_life = INT_MAX;
 121     }
 122     if(mask & KADM5_MOD_TIME) {
 123         if(ent.entry.modified_by)
 124             out->mod_date = ent.entry.modified_by->time;
 125         else
 126             out->mod_date = ent.entry.created_by.time;
 127     }
 128     if(mask & KADM5_MOD_NAME) {
 129         if(ent.entry.modified_by) {
 130             if (ent.entry.modified_by->principal != NULL)
 131                 ret = krb5_copy_principal(context->context,
 132                                           ent.entry.modified_by->principal,
 133                                           &out->mod_name);
 134         } else if(ent.entry.created_by.principal != NULL)
 135             ret = krb5_copy_principal(context->context,
 136                                       ent.entry.created_by.principal,
 137                                       &out->mod_name);
 138         else
 139             out->mod_name = NULL;
 140     }
 141     if(ret)
 142         goto out;
 143
 144     if(mask & KADM5_KVNO)
 145         out->kvno = ent.entry.kvno;
 146     if(mask & KADM5_MKVNO) {
 147         size_t n;
 148         out->mkvno = 0; /* XXX */
 149         for(n = 0; n < ent.entry.keys.len; n++)
 150             if(ent.entry.keys.val[n].mkvno) {
 151                 out->mkvno = *ent.entry.keys.val[n].mkvno; /* XXX this isn't right */
 152                 break;
 153             }
 154     }
 155 #if 0 /* XXX implement */
 156     if(mask & KADM5_AUX_ATTRIBUTES)
 157         ;
 158     if(mask & KADM5_LAST_SUCCESS)
 159         ;
 160     if(mask & KADM5_LAST_FAILED)
 161         ;
 162     if(mask & KADM5_FAIL_AUTH_COUNT)
 163         ;
 164 #endif
 165     if(mask & KADM5_POLICY)
 166         out->policy = NULL;
 167     if(mask & KADM5_MAX_RLIFE) {
 168         if(ent.entry.max_renew)
 169             out->max_renewable_life = *ent.entry.max_renew;
 170         else
 171             out->max_renewable_life = INT_MAX;
 172     }
 173     if(mask & KADM5_KEY_DATA){
 174         size_t i;
 175         Key *key;
 176         krb5_key_data *kd;
 177         krb5_salt salt;
 178         krb5_data *sp;
 179         krb5_get_pw_salt(context->context, ent.entry.principal, &salt);
 180         out->key_data = malloc(ent.entry.keys.len * sizeof(*out->key_data));
 181         if (out->key_data == NULL && ent.entry.keys.len != 0) {
 182             ret = ENOMEM;
 183             goto out;
 184         }
 185         for(i = 0; i < ent.entry.keys.len; i++){
 186             key = &ent.entry.keys.val[i];
 187             kd = &out->key_data[i];
 188             kd->key_data_ver = 2;
 189             kd->key_data_kvno = ent.entry.kvno;
 190             kd->key_data_type[0] = key->key.keytype;
 191             if(key->salt)
 192                 kd->key_data_type[1] = key->salt->type;
 193             else
 194                 kd->key_data_type[1] = KRB5_PADATA_PW_SALT;
 195             /* setup key */
 196             kd->key_data_length[0] = key->key.keyvalue.length;
 197             kd->key_data_contents[0] = malloc(kd->key_data_length[0]);
 198             if(kd->key_data_contents[0] == NULL && kd->key_data_length[0] != 0){
 199                 ret = ENOMEM;
 200                 break;
 201             }
 202             memcpy(kd->key_data_contents[0], key->key.keyvalue.data,
 203                    kd->key_data_length[0]);
 204             /* setup salt */
 205             if(key->salt)
 206                 sp = &key->salt->salt;
 207             else
 208                 sp = &salt.saltvalue;
 209             kd->key_data_length[1] = sp->length;
 210             kd->key_data_contents[1] = malloc(kd->key_data_length[1]);
 211             if(kd->key_data_length[1] != 0
 212                && kd->key_data_contents[1] == NULL) {
 213                 memset(kd->key_data_contents[0], 0, kd->key_data_length[0]);
 214                 ret = ENOMEM;
 215                 break;
 216             }
 217             memcpy(kd->key_data_contents[1], sp->data, kd->key_data_length[1]);
 218             out->n_key_data = i + 1;
 219         }
 220         krb5_free_salt(context->context, salt);
 221     }
 222     if(ret){
 223         kadm5_free_principal_ent(context, out);
 224         goto out;
 225     }
 226     if(mask & KADM5_TL_DATA) {
 227         time_t last_pw_expire;
 228         const HDB_Ext_PKINIT_acl *acl;
 229         const HDB_Ext_Aliases *aliases;
 230
 231         ret = hdb_entry_get_pw_change_time(&ent.entry, &last_pw_expire);
 232         if (ret == 0 && last_pw_expire) {
 233             unsigned char buf[4];
 234             _krb5_put_int(buf, last_pw_expire, sizeof(buf));
 235             ret = add_tl_data(out, KRB5_TL_LAST_PWD_CHANGE, buf, sizeof(buf));
 236         }
 237         if(ret){
 238             kadm5_free_principal_ent(context, out);
 239             goto out;
 240         }
 241         /*
 242          * If the client was allowed to get key data, let it have the
 243          * password too.
 244          */
 245         if(mask & KADM5_KEY_DATA) {
 246             heim_utf8_string pw;
 247
 248             ret = hdb_entry_get_password(context->context,
 249                                          context->db, &ent.entry, &pw);
 250             if (ret == 0) {
 251                 ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
 252                 free(pw);
 253             }
 254             krb5_clear_error_message(context->context);
 255         }
 256
 257         ret = hdb_entry_get_pkinit_acl(&ent.entry, &acl);
 258         if (ret == 0 && acl) {
 259             krb5_data buf;
 260             size_t len;
 261
 262             ASN1_MALLOC_ENCODE(HDB_Ext_PKINIT_acl, buf.data, buf.length,
 263                                 acl, &len, ret);
 264             if (ret) {
 265                 kadm5_free_principal_ent(context, out);
 266                 goto out;
 267             }
 268             if (len != buf.length)
 269                 krb5_abortx(context->context,
 270                             "internal ASN.1 encoder error");
 271             ret = add_tl_data(out, KRB5_TL_PKINIT_ACL, buf.data, buf.length);
 272             free(buf.data);
 273             if (ret) {
 274                 kadm5_free_principal_ent(context, out);
 275                 goto out;
 276             }
 277         }
 278         if(ret){
 279             kadm5_free_principal_ent(context, out);
 280             goto out;
 281         }
 282
 283         ret = hdb_entry_get_aliases(&ent.entry, &aliases);
 284         if (ret == 0 && aliases) {
 285             krb5_data buf;
 286             size_t len;
 287
 288             ASN1_MALLOC_ENCODE(HDB_Ext_Aliases, buf.data, buf.length,
 289                                aliases, &len, ret);
 290             if (ret) {
 291                 kadm5_free_principal_ent(context, out);
 292                 goto out;
 293             }
 294             if (len != buf.length)
 295                 krb5_abortx(context->context,
 296                             "internal ASN.1 encoder error");
 297             ret = add_tl_data(out, KRB5_TL_ALIASES, buf.data, buf.length);
 298             free(buf.data);
 299             if (ret) {
 300                 kadm5_free_principal_ent(context, out);
 301                 goto out;
 302             }
 303         }
 304         if(ret){
 305             kadm5_free_principal_ent(context, out);
 306             goto out;
 307         }
 308
 309     }
 310 out:
 311     hdb_free_entry(context->context, &ent);
 312
 313     return _kadm5_error_code(ret);
 314 }