1 /*
2  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 #pragma ident	"%Z%%M%	%I%	%E% SMI"
7 
8 /*
9  * lib/krb5/krb/copy_athctr.c
10  *
11  * Copyright 1990,1991 by the Massachusetts Institute of Technology.
12  * All Rights Reserved.
13  *
14  * Export of this software from the United States of America may
15  *   require a specific license from the United States Government.
16  *   It is the responsibility of any person or organization contemplating
17  *   export to obtain such a license before exporting.
18  *
19  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
20  * distribute this software and its documentation for any purpose and
21  * without fee is hereby granted, provided that the above copyright
22  * notice appear in all copies and that both that copyright notice and
23  * this permission notice appear in supporting documentation, and that
24  * the name of M.I.T. not be used in advertising or publicity pertaining
25  * to distribution of the software without specific, written prior
26  * permission.  Furthermore if you modify this software you must label
27  * your software as modified software and not distribute it in such a
28  * fashion that it might be confused with the original M.I.T. software.
29  * M.I.T. makes no representations about the suitability of
30  * this software for any purpose.  It is provided "as is" without express
31  * or implied warranty.
32  *
33  *
34  * krb5_copy_authenticator()
35  */
36 
37 #include <k5-int.h>
38 
39 KRB5_DLLIMP krb5_error_code KRB5_CALLCONV
40 krb5_copy_authenticator(context, authfrom, authto)
41     krb5_context context;
42     const krb5_authenticator FAR *authfrom;
43     krb5_authenticator FAR *FAR *authto;
44 {
45     krb5_error_code retval;
46     krb5_authenticator *tempto;
47 
48     if (!(tempto = (krb5_authenticator *)MALLOC(sizeof(*tempto))))
49 	return ENOMEM;
50 #ifdef HAVE_C_STRUCTURE_ASSIGNMENT
51     *tempto = *authfrom;
52 #else
53     (void) memcpy(tempto, authfrom, sizeof(krb5_authenticator));
54 #endif
55 
56     retval = krb5_copy_principal(context, authfrom->client, &tempto->client);
57     if (retval) {
58 	krb5_xfree_wrap(tempto, sizeof(*tempto));
59 	return retval;
60     }
61 
62     if (authfrom->checksum &&
63 	(retval = krb5_copy_checksum(context, authfrom->checksum, &tempto->checksum))) {
64 	    krb5_free_principal(context, tempto->client);
65 	    krb5_xfree_wrap(tempto, sizeof(*tempto));
66 	    return retval;
67     }
68 
69     if (authfrom->subkey) {
70 	    retval = krb5_copy_keyblock(context, authfrom->subkey, &tempto->subkey);
71 	    if (retval) {
72 		    krb5_xfree_wrap(tempto->subkey, sizeof(krb5_keyblock));
73 		    krb5_free_checksum(context, tempto->checksum);
74 		    krb5_free_principal(context, tempto->client);
75 		    krb5_xfree_wrap(tempto, sizeof(*tempto));
76 		    return retval;
77 	    }
78     }
79 
80     if (authfrom->authorization_data) {
81 		retval = krb5_copy_authdata(context, authfrom->authorization_data,
82 				    &tempto->authorization_data);
83 		if (retval) {
84 		    krb5_xfree_wrap(tempto->subkey, sizeof(krb5_keyblock));
85 		    krb5_free_checksum(context, tempto->checksum);
86 		    krb5_free_principal(context, tempto->client);
87 		    krb5_free_authdata(context, tempto->authorization_data);
88 		    krb5_xfree_wrap(tempto, sizeof(*tempto));
89 		    return retval;
90 		}
91     }
92 
93     *authto = tempto;
94     return 0;
95 }
96