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      1 /*	$NetBSD: modify_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 __RCSID("$NetBSD: modify_s.c,v 1.2 2017/01/28 21:31:49 christos Exp $");
     39 
     40 static kadm5_ret_t
     41 modify_principal(void *server_handle,
     42 		 kadm5_principal_ent_t princ,
     43 		 uint32_t mask,
     44 		 uint32_t forbidden_mask)
     45 {
     46     kadm5_server_context *context = server_handle;
     47     hdb_entry_ex ent;
     48     kadm5_ret_t ret;
     49 
     50     memset(&ent, 0, sizeof(ent));
     51 
     52     if((mask & forbidden_mask))
     53 	return KADM5_BAD_MASK;
     54     if((mask & KADM5_POLICY) && strcmp(princ->policy, "default"))
     55 	return KADM5_UNK_POLICY;
     56 
     57     if (!context->keep_open) {
     58 	ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
     59 	if(ret)
     60 	    return ret;
     61     }
     62 
     63     ret = kadm5_log_init(context);
     64     if (ret)
     65         goto out;
     66 
     67     ret = context->db->hdb_fetch_kvno(context->context, context->db,
     68 				      princ->principal, HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
     69     if (ret)
     70 	goto out2;
     71     ret = _kadm5_setup_entry(context, &ent, mask, princ, mask, NULL, 0);
     72     if (ret)
     73 	goto out3;
     74     ret = _kadm5_set_modifier(context, &ent.entry);
     75     if (ret)
     76 	goto out3;
     77 
     78     /*
     79      * If any keys are bogus, disallow the modify.  If the keys were
     80      * bogus as stored in the HDB we could allow those through, but
     81      * distinguishing that case from a pre-1.6 client using add_enctype
     82      * without the get-keys privilege requires more work (mainly: checking that
     83      * the bogus keys in princ->key_data[] have corresponding bogus keys in ent
     84      * before calling _kadm5_setup_entry()).
     85      */
     86     if ((mask & KADM5_KEY_DATA) &&
     87 	kadm5_some_keys_are_bogus(princ->n_key_data, princ->key_data)) {
     88 	ret = KADM5_AUTH_GET_KEYS; /* Not quite appropriate, but it'll do */
     89 	goto out3;
     90     }
     91 
     92     ret = hdb_seal_keys(context->context, context->db, &ent.entry);
     93     if (ret)
     94 	goto out3;
     95 
     96     if ((mask & KADM5_POLICY)) {
     97 	HDB_extension ext;
     98 
     99         memset(&ext, 0, sizeof(ext));
    100         /* XXX should be TRUE, but we don't yet support policies */
    101         ext.mandatory = FALSE;
    102 	ext.data.element = choice_HDB_extension_data_policy;
    103 	ext.data.u.policy = strdup(princ->policy);
    104 	if (ext.data.u.policy == NULL) {
    105 	    ret = ENOMEM;
    106 	    goto out3;
    107 	}
    108 	/* This calls free_HDB_extension(), freeing ext.data.u.policy */
    109 	ret = hdb_replace_extension(context->context, &ent.entry, &ext);
    110         free(ext.data.u.policy);
    111 	if (ret)
    112 	    goto out3;
    113     }
    114 
    115     /* This logs the change for iprop and writes to the HDB */
    116     ret = kadm5_log_modify(context, &ent.entry,
    117                            mask | KADM5_MOD_NAME | KADM5_MOD_TIME);
    118 
    119  out3:
    120     hdb_free_entry(context->context, &ent);
    121  out2:
    122     (void) kadm5_log_end(context);
    123  out:
    124     if (!context->keep_open) {
    125         kadm5_ret_t ret2;
    126         ret2 = context->db->hdb_close(context->context, context->db);
    127         if (ret == 0 && ret2 != 0)
    128             ret = ret2;
    129     }
    130     return _kadm5_error_code(ret);
    131 }
    132 
    133 
    134 kadm5_ret_t
    135 kadm5_s_modify_principal(void *server_handle,
    136 			 kadm5_principal_ent_t princ,
    137 			 uint32_t mask)
    138 {
    139     return modify_principal(server_handle, princ, mask,
    140 			    KADM5_LAST_PWD_CHANGE | KADM5_MOD_TIME
    141 			    | KADM5_MOD_NAME | KADM5_MKVNO
    142 			    | KADM5_AUX_ATTRIBUTES | KADM5_LAST_SUCCESS
    143 			    | KADM5_LAST_FAILED);
    144 }
    145