Fix order of arguments given to memchr().
[heimdal.git] / kadmin / stash.c
blob162cdb85a8eb3ca24e20ddeb951de65eb1d438fe
1 /*
2 * Copyright (c) 2004 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
6 * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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.
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.
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.
36 #include "kadmin_locl.h"
37 #include "kadmin-commands.h"
39 extern int local_flag;
41 int
42 stash(struct stash_options *opt, int argc, char **argv)
44 char buf[1024];
45 krb5_error_code ret;
46 krb5_enctype enctype;
47 hdb_master_key mkey;
49 if(!local_flag) {
50 krb5_warnx(context, "stash is only available in local (-l) mode");
51 return 0;
54 ret = krb5_string_to_enctype(context, opt->enctype_string, &enctype);
55 if(ret) {
56 krb5_warn(context, ret, "%s", opt->enctype_string);
57 return 0;
60 if(opt->key_file_string == NULL) {
61 asprintf(&opt->key_file_string, "%s/m-key", hdb_db_dir(context));
62 if (opt->key_file_string == NULL)
63 errx(1, "out of memory");
66 ret = hdb_read_master_key(context, opt->key_file_string, &mkey);
67 if(ret && ret != ENOENT) {
68 krb5_warn(context, ret, "reading master key from %s",
69 opt->key_file_string);
70 return 0;
73 if (opt->convert_file_flag) {
74 if (ret)
75 krb5_warn(context, ret, "reading master key from %s",
76 opt->key_file_string);
77 return 0;
78 } else {
79 krb5_keyblock key;
80 krb5_salt salt;
81 salt.salttype = KRB5_PW_SALT;
82 /* XXX better value? */
83 salt.saltvalue.data = NULL;
84 salt.saltvalue.length = 0;
85 if(opt->master_key_fd_integer != -1) {
86 ssize_t n;
87 n = read(opt->master_key_fd_integer, buf, sizeof(buf));
88 if(n == 0)
89 krb5_warnx(context, "end of file reading passphrase");
90 else if(n < 0) {
91 krb5_warn(context, errno, "reading passphrase");
92 n = 0;
94 buf[n] = '\0';
95 buf[strcspn(buf, "\r\n")] = '\0';
96 } else if (opt->random_password_flag) {
97 random_password (buf, sizeof(buf));
98 printf("Using random master stash password: %s\n", buf);
99 } else {
100 if(UI_UTIL_read_pw_string(buf, sizeof(buf), "Master key: ", 1)) {
101 hdb_free_master_key(context, mkey);
102 return 0;
105 ret = krb5_string_to_key_salt(context, enctype, buf, salt, &key);
106 ret = hdb_add_master_key(context, &key, &mkey);
107 krb5_free_keyblock_contents(context, &key);
111 char *new, *old;
112 asprintf(&old, "%s.old", opt->key_file_string);
113 asprintf(&new, "%s.new", opt->key_file_string);
114 if(old == NULL || new == NULL) {
115 ret = ENOMEM;
116 goto out;
119 if(unlink(new) < 0 && errno != ENOENT) {
120 ret = errno;
121 goto out;
123 krb5_warnx(context, "writing key to \"%s\"", opt->key_file_string);
124 ret = hdb_write_master_key(context, new, mkey);
125 if(ret)
126 unlink(new);
127 else {
128 unlink(old);
129 #ifndef NO_POSIX_LINKS
130 if(link(opt->key_file_string, old) < 0 && errno != ENOENT) {
131 ret = errno;
132 unlink(new);
133 } else {
134 #endif
135 if(rename(new, opt->key_file_string) < 0) {
136 ret = errno;
138 #ifndef NO_POSIX_LINKS
140 #endif
142 out:
143 free(old);
144 free(new);
145 if(ret)
146 krb5_warn(context, errno, "writing master key file");
149 hdb_free_master_key(context, mkey);
150 return 0;