1/*
2 * lib/krb5/krb/copy_creds.c
3 *
4 * Copyright 1990,1991 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 * krb5_copy_cred()
28 */
29
30#include "k5-int.h"
31
32/*
33 * Copy credentials, allocating fresh storage where needed.
34 */
35
36krb5_error_code KRB5_CALLCONV
37krb5_copy_creds(krb5_context context, const krb5_creds *incred, krb5_creds **outcred)
38{
39    krb5_creds *tempcred;
40    krb5_error_code retval;
41    krb5_data *scratch;
42
43    if (!(tempcred = (krb5_creds *)malloc(sizeof(*tempcred))))
44	return ENOMEM;
45
46    *tempcred = *incred;
47    retval = krb5_copy_principal(context, incred->client, &tempcred->client);
48    if (retval)
49	goto cleanlast;
50    retval = krb5_copy_principal(context, incred->server, &tempcred->server);
51    if (retval)
52	goto cleanclient;
53    retval = krb5_copy_keyblock_contents(context, &incred->keyblock,
54					 &tempcred->keyblock);
55    if (retval)
56	goto cleanserver;
57    retval = krb5_copy_addresses(context, incred->addresses, &tempcred->addresses);
58    if (retval)
59	goto cleanblock;
60    retval = krb5_copy_data(context, &incred->ticket, &scratch);
61    if (retval)
62	goto cleanaddrs;
63    tempcred->ticket = *scratch;
64    krb5_xfree(scratch);
65    retval = krb5_copy_data(context, &incred->second_ticket, &scratch);
66    if (retval)
67	goto cleanticket;
68
69    tempcred->second_ticket = *scratch;
70    krb5_xfree(scratch);
71
72    retval = krb5_copy_authdata(context, incred->authdata,&tempcred->authdata);
73    if (retval)
74        goto clearticket;
75
76    *outcred = tempcred;
77    return 0;
78
79 clearticket:
80    memset(tempcred->ticket.data,0,tempcred->ticket.length);
81 cleanticket:
82    free(tempcred->ticket.data);
83 cleanaddrs:
84    krb5_free_addresses(context, tempcred->addresses);
85 cleanblock:
86    krb5_xfree(tempcred->keyblock.contents);
87 cleanserver:
88    krb5_free_principal(context, tempcred->server);
89 cleanclient:
90    krb5_free_principal(context, tempcred->client);
91 cleanlast:
92    krb5_xfree(tempcred);
93    return retval;
94}
95