crypto/heimdal-0.6.3/admin/add.c

   1 /*
   2  * Copyright (c) 1997 - 2002 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. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "ktutil_locl.h"
  35
  36 RCSID("$Id: add.c,v 1.5 2002/09/10 19:26:52 joda Exp $");
  37
  38 int
  39 kt_add(int argc, char **argv)
  40 {
  41     krb5_error_code ret;
  42     krb5_keytab keytab;
  43     krb5_keytab_entry entry;
  44     char buf[128];
  45     char *principal_string = NULL;
  46     int kvno = -1;
  47     char *enctype_string = NULL;
  48     krb5_enctype enctype;
  49     char *password_string = NULL;
  50     int salt_flag = 1;
  51     int random_flag = 0;
  52     int help_flag = 0;
  53     struct getargs args[] = {
  54         { "principal", 'p', arg_string, NULL, "principal of key", "principal"},
  55         { "kvno", 'V', arg_integer, NULL, "key version of key" },
  56         { "enctype", 'e', arg_string, NULL, "encryption type of key" },
  57         { "password", 'w', arg_string, NULL, "password for key"},
  58         { "salt", 's',  arg_negative_flag, NULL, "no salt" },
  59         { "random",  'r', arg_flag, NULL, "generate random key" },
  60         { "help", 'h', arg_flag, NULL }
  61     };
  62     int num_args = sizeof(args) / sizeof(args[0]);
  63     int optind = 0;
  64     int i = 0;
  65     args[i++].value = &principal_string;
  66     args[i++].value = &kvno;
  67     args[i++].value = &enctype_string;
  68     args[i++].value = &password_string;
  69     args[i++].value = &salt_flag;
  70     args[i++].value = &random_flag;
  71     args[i++].value = &help_flag;
  72
  73     if(getarg(args, num_args, argc, argv, &optind)) {
  74         arg_printusage(args, num_args, "ktutil add", "");
  75         return 1;
  76     }
  77     if(help_flag) {
  78         arg_printusage(args, num_args, "ktutil add", "");
  79         return 1;
  80     }
  81     if((keytab = ktutil_open_keytab()) == NULL)
  82         return 1;
  83
  84     memset(&entry, 0, sizeof(entry));
  85     if(principal_string == NULL) {
  86         printf("Principal: ");
  87         if (fgets(buf, sizeof(buf), stdin) == NULL)
  88             return 1;
  89         buf[strcspn(buf, "\r\n")] = '\0';
  90         principal_string = buf;
  91     }
  92     ret = krb5_parse_name(context, principal_string, &entry.principal);
  93     if(ret) {
  94         krb5_warn(context, ret, "%s", principal_string);
  95         goto out;
  96     }
  97     if(enctype_string == NULL) {
  98         printf("Encryption type: ");
  99         if (fgets(buf, sizeof(buf), stdin) == NULL)
 100             goto out;
 101         buf[strcspn(buf, "\r\n")] = '\0';
 102         enctype_string = buf;
 103     }
 104     ret = krb5_string_to_enctype(context, enctype_string, &enctype);
 105     if(ret) {
 106         int t;
 107         if(sscanf(enctype_string, "%d", &t) == 1)
 108             enctype = t;
 109         else {
 110             krb5_warn(context, ret, "%s", enctype_string);
 111             goto out;
 112         }
 113     }
 114     if(kvno == -1) {
 115         printf("Key version: ");
 116         if (fgets(buf, sizeof(buf), stdin) == NULL)
 117             goto out;
 118         buf[strcspn(buf, "\r\n")] = '\0';
 119         kvno = atoi(buf);
 120     }
 121     if(password_string == NULL && random_flag == 0) {
 122         if(des_read_pw_string(buf, sizeof(buf), "Password: ", 1))
 123             goto out;
 124         password_string = buf;
 125     }
 126     if(password_string) {
 127         if (!salt_flag) {
 128             krb5_salt salt;
 129             krb5_data pw;
 130
 131             salt.salttype         = KRB5_PW_SALT;
 132             salt.saltvalue.data   = NULL;
 133             salt.saltvalue.length = 0;
 134             pw.data = (void*)password_string;
 135             pw.length = strlen(password_string);
 136             krb5_string_to_key_data_salt(context, enctype, pw, salt,
 137                                          &entry.keyblock);
 138         } else {
 139             krb5_string_to_key(context, enctype, password_string,
 140                                entry.principal, &entry.keyblock);
 141         }
 142         memset (password_string, 0, strlen(password_string));
 143     } else {
 144         krb5_generate_random_keyblock(context, enctype, &entry.keyblock);
 145     }
 146     entry.vno = kvno;
 147     entry.timestamp = time (NULL);
 148     ret = krb5_kt_add_entry(context, keytab, &entry);
 149     if(ret)
 150         krb5_warn(context, ret, "add");
 151  out:
 152     krb5_kt_free_entry(context, &entry);
 153     krb5_kt_close(context, keytab);
 154     return 0;
 155 }