1/*
2 * Copyright (c) 1999-2006 Kungliga Tekniska H�gskolan
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 "kadmin_locl.h"
35#include "kadmin-commands.h"
36
37RCSID("$Id: add_enctype.c 20287 2007-02-22 03:12:30Z lha $");
38
39/*
40 * del_enctype principal enctypes...
41 */
42
43int
44add_enctype(struct add_enctype_options*opt, int argc, char **argv)
45{
46    kadm5_principal_ent_rec princ;
47    krb5_principal princ_ent = NULL;
48    krb5_error_code ret;
49    const char *princ_name;
50    int i, j;
51    krb5_key_data *new_key_data;
52    int n_etypes;
53    krb5_enctype *etypes;
54
55    if (!opt->random_key_flag) {
56	krb5_warnx (context, "only random key is supported now");
57	return 0;
58    }
59
60    memset (&princ, 0, sizeof(princ));
61    princ_name = argv[0];
62    n_etypes   = argc - 1;
63    etypes     = malloc (n_etypes * sizeof(*etypes));
64    if (etypes == NULL) {
65	krb5_warnx (context, "out of memory");
66	return 0;
67    }
68    argv++;
69    for (i = 0; i < n_etypes; ++i) {
70	ret = krb5_string_to_enctype (context, argv[i], &etypes[i]);
71	if (ret) {
72	    krb5_warnx (context, "bad enctype \"%s\"", argv[i]);
73	    goto out2;
74	}
75    }
76
77    ret = krb5_parse_name(context, princ_name, &princ_ent);
78    if (ret) {
79	krb5_warn (context, ret, "krb5_parse_name %s", princ_name);
80	goto out2;
81    }
82
83    ret = kadm5_get_principal(kadm_handle, princ_ent, &princ,
84			      KADM5_PRINCIPAL | KADM5_KEY_DATA);
85    if (ret) {
86	krb5_free_principal (context, princ_ent);
87	krb5_warnx (context, "no such principal: %s", princ_name);
88	goto out2;
89    }
90
91    new_key_data   = malloc((princ.n_key_data + n_etypes)
92			    * sizeof(*new_key_data));
93    if (new_key_data == NULL) {
94	krb5_warnx (context, "out of memory");
95	goto out;
96    }
97
98    for (i = 0; i < princ.n_key_data; ++i) {
99	krb5_key_data *key = &princ.key_data[i];
100
101	for (j = 0; j < n_etypes; ++j) {
102	    if (etypes[j] == key->key_data_type[0]) {
103		krb5_warnx(context, "enctype %d already exists",
104			   (int)etypes[j]);
105		goto out;
106	    }
107	}
108	new_key_data[i] = *key;
109    }
110
111    for (i = 0; i < n_etypes; ++i) {
112	int n = princ.n_key_data + i;
113	krb5_keyblock keyblock;
114
115	memset(&new_key_data[n], 0, sizeof(new_key_data[n]));
116	new_key_data[n].key_data_ver = 2;
117	new_key_data[n].key_data_kvno = 0;
118
119	ret = krb5_generate_random_keyblock (context, etypes[i], &keyblock);
120	if (ret) {
121	    krb5_warnx(context, "genernate enctype %d failed", (int)etypes[i]);
122	    while (--i >= 0)
123		free(new_key_data[--n].key_data_contents[0]);
124	    goto out;
125	}
126
127	/* key */
128	new_key_data[n].key_data_type[0] = etypes[i];
129	new_key_data[n].key_data_contents[0] = malloc(keyblock.keyvalue.length);
130	if (new_key_data[n].key_data_contents[0] == NULL) {
131	    ret = ENOMEM;
132	    krb5_warn(context, ret, "out of memory");
133	    while (--i >= 0)
134		free(new_key_data[--n].key_data_contents[0]);
135	    goto out;
136	}
137	new_key_data[n].key_data_length[0]   = keyblock.keyvalue.length;
138	memcpy(new_key_data[n].key_data_contents[0],
139	       keyblock.keyvalue.data,
140	       keyblock.keyvalue.length);
141	krb5_free_keyblock_contents(context, &keyblock);
142
143	/* salt */
144	new_key_data[n].key_data_type[1]     = KRB5_PW_SALT;
145	new_key_data[n].key_data_length[1]   = 0;
146	new_key_data[n].key_data_contents[1] = NULL;
147
148    }
149
150    free (princ.key_data);
151    princ.n_key_data += n_etypes;
152    princ.key_data   = new_key_data;
153    new_key_data = NULL;
154
155    ret = kadm5_modify_principal (kadm_handle, &princ, KADM5_KEY_DATA);
156    if (ret)
157	krb5_warn(context, ret, "kadm5_modify_principal");
158out:
159    krb5_free_principal (context, princ_ent);
160    kadm5_free_principal_ent(kadm_handle, &princ);
161out2:
162    free (etypes);
163    return ret != 0;
164}
165