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      1 /*	$NetBSD: setkey3_s.c,v 1.2 2017/01/28 21:31:49 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997-2001, 2003, 2005-2006 Kungliga Tekniska Hgskolan
      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 /**
     39  * Server-side function to set new keys for a principal.
     40  */
     41 kadm5_ret_t
     42 kadm5_s_setkey_principal_3(void *server_handle,
     43 			   krb5_principal princ,
     44 			   krb5_boolean keepold,
     45 			   int n_ks_tuple,
     46 			   krb5_key_salt_tuple *ks_tuple,
     47 			   krb5_keyblock *keyblocks, int n_keys)
     48 {
     49     kadm5_server_context *context = server_handle;
     50     hdb_entry_ex ent;
     51     kadm5_ret_t ret = 0;
     52 
     53     memset(&ent, 0, sizeof(ent));
     54     if (!context->keep_open)
     55 	ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
     56     if (ret)
     57 	return ret;
     58 
     59     ret = kadm5_log_init(context);
     60     if (ret) {
     61         if (!context->keep_open)
     62             context->db->hdb_close(context->context, context->db);
     63         return ret;
     64     }
     65 
     66     ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
     67 				      HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
     68     if (ret) {
     69         (void) kadm5_log_end(context);
     70         if (!context->keep_open)
     71             context->db->hdb_close(context->context, context->db);
     72         return ret;
     73     }
     74 
     75     if (keepold) {
     76         ret = hdb_add_current_keys_to_history(context->context, &ent.entry);
     77     } else
     78 	ret = hdb_clear_extension(context->context, &ent.entry,
     79 				  choice_HDB_extension_data_hist_keys);
     80 
     81     /*
     82      * Though in practice all real calls to this function will pass an empty
     83      * ks_tuple, and cannot in any case employ any salts that require
     84      * additional data, we go the extra mile to set any requested salt type
     85      * along with a zero length salt value.  While we're at it we check that
     86      * each ks_tuple's enctype matches the corresponding key enctype.
     87      */
     88     if (ret == 0) {
     89 	int i;
     90 
     91 	free_Keys(&ent.entry.keys);
     92 	for (i = 0; i < n_keys; ++i) {
     93 	    Key k;
     94 	    Salt s;
     95 
     96 	    k.mkvno = 0;
     97 	    k.key = keyblocks[i];
     98 	    if (n_ks_tuple == 0)
     99 		k.salt = 0;
    100 	    else {
    101 		if (ks_tuple[i].ks_enctype != keyblocks[i].keytype) {
    102 		    ret = KADM5_SETKEY3_ETYPE_MISMATCH;
    103 		    break;
    104 		}
    105 		s.type = ks_tuple[i].ks_salttype;
    106 		s.salt.data = 0;
    107 		s.opaque = 0;
    108 		k.salt = &s;
    109 	    }
    110 	    if ((ret = add_Keys(&ent.entry.keys, &k)) != 0)
    111 		break;
    112 	}
    113     }
    114 
    115     if (ret == 0) {
    116 	ent.entry.kvno++;
    117 	ent.entry.flags.require_pwchange = 0;
    118 	hdb_entry_set_pw_change_time(context->context, &ent.entry, 0);
    119 	hdb_entry_clear_password(context->context, &ent.entry);
    120 
    121 	if ((ret = hdb_seal_keys(context->context, context->db,
    122 				 &ent.entry)) == 0
    123 	    && (ret = _kadm5_set_modifier(context, &ent.entry)) == 0
    124 	    && (ret = _kadm5_bump_pw_expire(context, &ent.entry)) == 0)
    125 	    ret = kadm5_log_modify(context, &ent.entry,
    126                                    KADM5_ATTRIBUTES | KADM5_PRINCIPAL |
    127                                    KADM5_MOD_NAME | KADM5_MOD_TIME |
    128                                    KADM5_KEY_DATA | KADM5_KVNO |
    129                                    KADM5_PW_EXPIRATION | KADM5_TL_DATA);
    130     }
    131 
    132     hdb_free_entry(context->context, &ent);
    133     (void) kadm5_log_end(context);
    134     if (!context->keep_open)
    135 	context->db->hdb_close(context->context, context->db);
    136     return _kadm5_error_code(ret);
    137 }
    138