xref: /netbsd-src/crypto/external/bsd/heimdal/dist/lib/kadm5/modify_s.c (revision d3273b5b76f5afaafe308cead5511dbb8df8c5e9)
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 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: modify_s.c,v 1.2 2017/01/28 21:31:49 christos Exp $");
39 
40 static kadm5_ret_t
modify_principal(void * server_handle,kadm5_principal_ent_t princ,uint32_t mask,uint32_t forbidden_mask)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
kadm5_s_modify_principal(void * server_handle,kadm5_principal_ent_t princ,uint32_t mask)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