diff options
Diffstat (limited to 'crypto/heimdal/kadmin/stash.c')
| -rw-r--r-- | crypto/heimdal/kadmin/stash.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/crypto/heimdal/kadmin/stash.c b/crypto/heimdal/kadmin/stash.c new file mode 100644 index 0000000..d5b65ee --- /dev/null +++ b/crypto/heimdal/kadmin/stash.c @@ -0,0 +1,140 @@ +/* + * Copyright (c) 2004 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * 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" + +RCSID("$Id: stash.c 22251 2007-12-09 05:58:43Z lha $"); + +extern int local_flag; + +int +stash(struct stash_options *opt, int argc, char **argv) +{ + char buf[1024]; + krb5_error_code ret; + krb5_enctype enctype; + hdb_master_key mkey; + + 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) { + asprintf(&opt->key_file_string, "%s/m-key", hdb_db_dir(context)); + if (opt->key_file_string == NULL) + 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); + 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)); + if(n == 0) + krb5_warnx(context, "end of file reading passphrase"); + else if(n < 0) + krb5_warn(context, errno, "reading passphrase"); + buf[n] = '\0'; + buf[strcspn(buf, "\r\n")] = '\0'; + } else { + if(UI_UTIL_read_pw_string(buf, sizeof(buf), "Master key: ", 1)) { + hdb_free_master_key(context, mkey); + return 0; + } + } + ret = krb5_string_to_key_salt(context, enctype, buf, salt, &key); + ret = hdb_add_master_key(context, &key, &mkey); + krb5_free_keyblock_contents(context, &key); + } + + { + char *new, *old; + asprintf(&old, "%s.old", opt->key_file_string); + asprintf(&new, "%s.new", opt->key_file_string); + if(old == NULL || new == NULL) { + 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); + if(link(opt->key_file_string, old) < 0 && errno != ENOENT) { + ret = errno; + unlink(new); + } else if(rename(new, opt->key_file_string) < 0) { + ret = errno; + } + } + out: + free(old); + free(new); + if(ret) + krb5_warn(context, errno, "writing master key file"); + } + + hdb_free_master_key(context, mkey); + return 0; +} |
