1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2 /* lib/krb5/os/gen_rname.c */
3 /*
4 * Copyright 1991 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 /*
28 * Take a port-style address and unique string, and return
29 * a replay cache tag string.
30 */
31
32 #include "k5-int.h"
33 #include "os-proto.h"
34
35 krb5_error_code
krb5_gen_replay_name(krb5_context context,const krb5_address * address,const char * uniq,char ** string)36 krb5_gen_replay_name(krb5_context context, const krb5_address *address, const char *uniq, char **string)
37 {
38 char * tmp;
39 unsigned int i;
40 unsigned int len;
41
42 len = strlen(uniq) + (address->length * 2) + 1;
43 if ((*string = malloc(len)) == NULL)
44 return ENOMEM;
45
46 snprintf(*string, len, "%s", uniq);
47 tmp = *string + strlen(uniq);
48 for (i = 0; i < address->length; i++) {
49 snprintf(tmp, len - (tmp-*string), "%.2x", address->contents[i] & 0xff);
50 tmp += 2;
51 }
52 return 0;
53 }
54