1 /*
2 * lib/krb5/krb/pr_to_salt.c
3 *
4 * Copyright 1990 by the Massachusetts Institute of Technology.
5 * All Rights Reserved.
6 *
7 * Export of this software from the United States of America may
8 * require a specific license from the United States Government.
9 * It is the responsibility of any person or organization contemplating
10 * export to obtain such a license before exporting.
11 *
12 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
13 * distribute this software and its documentation for any purpose and
14 * without fee is hereby granted, provided that the above copyright
15 * notice appear in all copies and that both that copyright notice and
16 * this permission notice appear in supporting documentation, and that
17 * the name of M.I.T. not be used in advertising or publicity pertaining
18 * to distribution of the software without specific, written prior
19 * permission. Furthermore if you modify this software you must label
20 * your software as modified software and not distribute it in such a
21 * fashion that it might be confused with the original M.I.T. software.
22 * M.I.T. makes no representations about the suitability of
23 * this software for any purpose. It is provided "as is" without express
24 * or implied warranty.
25 *
26 *
27 * krb5_principal2salt()
28 */
29
30 #include "k5-int.h"
31
32 static krb5_error_code krb5_principal2salt_internal
33 (krb5_context, krb5_const_principal, krb5_data *ret, int);
34
35 /*
36 * Convert a krb5_principal into the default salt for that principal.
37 */
38 /*ARGSUSED*/
39 static krb5_error_code
krb5_principal2salt_internal(krb5_context context,register krb5_const_principal pr,krb5_data * ret,int use_realm)40 krb5_principal2salt_internal(krb5_context context, register krb5_const_principal pr, krb5_data *ret, int use_realm)
41 {
42 unsigned int size = 0, offset=0;
43 krb5_int32 nelem;
44 register int i;
45
46 if (pr == 0) {
47 ret->length = 0;
48 ret->data = 0;
49 return 0;
50 }
51
52 nelem = krb5_princ_size(context, pr);
53
54 if (use_realm)
55 size += krb5_princ_realm(context, pr)->length;
56
57 for (i = 0; i < (int) nelem; i++)
58 size += krb5_princ_component(context, pr, i)->length;
59
60 ret->length = size;
61 if (!(ret->data = malloc (size)))
62 return ENOMEM;
63
64 if (use_realm) {
65 offset = krb5_princ_realm(context, pr)->length;
66 memcpy(ret->data, krb5_princ_realm(context, pr)->data, offset);
67 }
68
69 for (i = 0; i < (int) nelem; i++) {
70 memcpy(&ret->data[offset], krb5_princ_component(context, pr, i)->data,
71 krb5_princ_component(context, pr, i)->length);
72 offset += krb5_princ_component(context, pr, i)->length;
73 }
74 return 0;
75 }
76
77 krb5_error_code
krb5_principal2salt(krb5_context context,register krb5_const_principal pr,krb5_data * ret)78 krb5_principal2salt(krb5_context context, register krb5_const_principal pr, krb5_data *ret)
79 {
80 return krb5_principal2salt_internal(context, pr, ret, 1);
81 }
82
83 krb5_error_code
krb5_principal2salt_norealm(krb5_context context,register krb5_const_principal pr,krb5_data * ret)84 krb5_principal2salt_norealm(krb5_context context, register krb5_const_principal pr, krb5_data *ret)
85 {
86 return krb5_principal2salt_internal(context, pr, ret, 0);
87 }
88