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-rw-r--r--third_party/heimdal/kadmin/stash.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/third_party/heimdal/kadmin/stash.c b/third_party/heimdal/kadmin/stash.c
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+/*
+ * Copyright (c) 2004 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "kadmin_locl.h"
+#include "kadmin-commands.h"
+
+extern int local_flag;
+
+int
+stash(struct stash_options *opt, int argc, char **argv)
+{
+ char buf[1024+1];
+ krb5_error_code ret;
+ krb5_enctype enctype;
+ hdb_master_key mkey;
+ int aret;
+
+ if(!local_flag) {
+ krb5_warnx(context, "stash is only available in local (-l) mode");
+ return 0;
+ }
+
+ ret = krb5_string_to_enctype(context, opt->enctype_string, &enctype);
+ if(ret) {
+ krb5_warn(context, ret, "%s", opt->enctype_string);
+ return 0;
+ }
+
+ if(opt->key_file_string == NULL) {
+ aret = asprintf(&opt->key_file_string, "%s/m-key", hdb_db_dir(context));
+ if (aret == -1)
+ errx(1, "out of memory");
+ }
+
+ ret = hdb_read_master_key(context, opt->key_file_string, &mkey);
+ if(ret && ret != ENOENT) {
+ krb5_warn(context, ret, "reading master key from %s",
+ opt->key_file_string);
+ return 0;
+ }
+
+ if (opt->convert_file_flag) {
+ if (ret)
+ krb5_warn(context, ret, "reading master key from %s",
+ opt->key_file_string);
+ hdb_free_master_key(context, mkey);
+ return 0;
+ } else {
+ krb5_keyblock key;
+ krb5_salt salt;
+ salt.salttype = KRB5_PW_SALT;
+ /* XXX better value? */
+ salt.saltvalue.data = NULL;
+ salt.saltvalue.length = 0;
+ if(opt->master_key_fd_integer != -1) {
+ ssize_t n;
+ n = read(opt->master_key_fd_integer, buf, sizeof(buf)-1);
+ if(n == 0)
+ krb5_warnx(context, "end of file reading passphrase");
+ else if(n < 0) {
+ krb5_warn(context, errno, "reading passphrase");
+ n = 0;
+ }
+ buf[n] = '\0';
+ buf[strcspn(buf, "\r\n")] = '\0';
+ } else if (opt->random_password_flag) {
+ random_password (buf, sizeof(buf));
+ printf("Using random master stash password: %s\n", buf);
+ } else {
+ if(UI_UTIL_read_pw_string(buf, sizeof(buf), "Master key: ",
+ UI_UTIL_FLAG_VERIFY)) {
+ hdb_free_master_key(context, mkey);
+ return 0;
+ }
+ }
+ ret = krb5_string_to_key_salt(context, enctype, buf, salt, &key);
+ if (ret == 0)
+ ret = hdb_add_master_key(context, &key, &mkey);
+ if (ret)
+ krb5_warn(context, errno, "setting master key");
+ krb5_free_keyblock_contents(context, &key);
+ }
+
+ {
+ char *new = NULL, *old = NULL;
+
+ aret = asprintf(&old, "%s.old", opt->key_file_string);
+ if (aret == -1) {
+ ret = ENOMEM;
+ goto out;
+ }
+ aret = asprintf(&new, "%s.new", opt->key_file_string);
+ if (aret == -1) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ if(unlink(new) < 0 && errno != ENOENT) {
+ ret = errno;
+ goto out;
+ }
+ krb5_warnx(context, "writing key to \"%s\"", opt->key_file_string);
+ ret = hdb_write_master_key(context, new, mkey);
+ if(ret)
+ unlink(new);
+ else {
+ unlink(old);
+#ifndef NO_POSIX_LINKS
+ if(link(opt->key_file_string, old) < 0 && errno != ENOENT) {
+ ret = errno;
+ unlink(new);
+ } else {
+#endif
+ if(rename(new, opt->key_file_string) < 0) {
+ ret = errno;
+ }
+#ifndef NO_POSIX_LINKS
+ }
+#endif
+ }
+ out:
+ free(old);
+ free(new);
+ if(ret)
+ krb5_warn(context, errno, "writing master key file");
+ }
+
+ hdb_free_master_key(context, mkey);
+ return 0;
+}