kdc/kstash.c

   1 /*
   2  * Copyright (c) 1997 Kungliga Tekniska Högskolan
   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. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by Kungliga Tekniska
  20  *      Högskolan and its contributors.
  21  *
  22  * 4. Neither the name of the Institute nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include "kdc_locl.h"
  40
  41 RCSID("$Id$");
  42
  43 char *keyfile = "m-key";
  44 int help;
  45
  46 struct getargs args[] = {
  47     { "key-file", 'k', arg_string, &keyfile, "Master key file", "file" },
  48     { "help", 'h', arg_flag, &help }
  49 };
  50
  51 int num_args = sizeof(args) / sizeof(args[0]);
  52
  53 int main(int argc, char **argv)
  54 {
  55     char buf[1024];
  56     EncryptionKey key;
  57     FILE *f;
  58     size_t len;
  59     int optind = 0;
  60
  61     set_progname(argv[0]);
  62
  63     if(getarg(args, num_args, argc, argv, &optind)){
  64         arg_printusage (args, num_args, "");
  65         exit(1);
  66     }
  67
  68     if(help){
  69         arg_printusage (args, num_args, "");
  70         exit(0);
  71     }
  72
  73     des_read_pw_string(buf, sizeof(buf), "Master key: ", 1);
  74     key.keytype = KEYTYPE_DES;
  75     key.keyvalue.length = sizeof(des_cblock);
  76     key.keyvalue.data = malloc(key.keyvalue.length);
  77     des_string_to_key(buf, key.keyvalue.data);
  78
  79 #ifdef HAVE_UMASK
  80     umask(077);
  81 #endif
  82
  83     f = fopen(keyfile, "w");
  84     if(f == NULL)
  85         err(1, "Failed to open %s", keyfile);
  86     encode_EncryptionKey(buf + sizeof(buf) - 1, sizeof(buf), &key, &len);
  87     fwrite(buf + sizeof(buf) - len, len, 1, f);
  88     fclose(f);
  89     exit(0);
  90 }