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 "headers.h"
  40
  41 RCSID("$Id$");
  42
  43 char *keyfile = HDB_DB_DIR "/m-key";
  44 char *v4_keyfile;
  45 int help_flag;
  46 int version_flag;
  47
  48 struct getargs args[] = {
  49     { "key-file", 'k', arg_string, &keyfile, "master key file", "file" },
  50     { "version4-key-file", '4', arg_string, &v4_keyfile,
  51       "kerberos 4 master key file", "file" },
  52     { "help", 'h', arg_flag, &help_flag },
  53     { "version", 0, arg_flag, &version_flag }
  54 };
  55
  56 int num_args = sizeof(args) / sizeof(args[0]);
  57
  58 int main(int argc, char **argv)
  59 {
  60     char buf[1024];
  61     EncryptionKey key;
  62     FILE *f;
  63     size_t len;
  64     krb5_context context = NULL;
  65
  66     krb5_program_setup(&context, argc, argv, args, num_args, NULL);
  67
  68     if(help_flag)
  69         krb5_std_usage(0, args, num_args);
  70     if(version_flag)
  71         krb5_errx(context, 0, "%s", heimdal_version);
  72
  73
  74     key.keytype = KEYTYPE_DES;
  75     key.keyvalue.length = sizeof(des_cblock);
  76     key.keyvalue.data = malloc(key.keyvalue.length);
  77     if(v4_keyfile){
  78         f = fopen(v4_keyfile, "r");
  79         if(f == NULL)
  80             krb5_err(context, 1, errno, "fopen(%s)", v4_keyfile);
  81         fread(key.keyvalue.data, 1, key.keyvalue.length, f);
  82         fclose(f);
  83     }else{
  84         des_read_pw_string(buf, sizeof(buf), "Master key: ", 1);
  85         des_string_to_key(buf, key.keyvalue.data);
  86     }
  87
  88 #ifdef HAVE_UMASK
  89     umask(077);
  90 #endif
  91
  92     f = fopen(keyfile, "w");
  93     if(f == NULL)
  94         krb5_err(context, 1, errno, "fopen(%s)", keyfile);
  95     encode_EncryptionKey((unsigned char *)buf + sizeof(buf) - 1,
  96                          sizeof(buf), &key, &len);
  97     fwrite(buf + sizeof(buf) - len, len, 1, f);
  98     fclose(f);
  99     exit(0);
 100 }