xref: /illumos-gate/usr/src/uts/common/gssapi/mechs/krb5/krb5/krb/copy_auth.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
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  * lib/krb5/krb/copy_auth.c
9  *
10  * Copyright 1990 by the Massachusetts Institute of Technology.
11  * All Rights Reserved.
12  *
13  * Export of this software from the United States of America may
14  *   require a specific license from the United States Government.
15  *   It is the responsibility of any person or organization contemplating
16  *   export to obtain such a license before exporting.
17  *
18  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
19  * distribute this software and its documentation for any purpose and
20  * without fee is hereby granted, provided that the above copyright
21  * notice appear in all copies and that both that copyright notice and
22  * this permission notice appear in supporting documentation, and that
23  * the name of M.I.T. not be used in advertising or publicity pertaining
24  * to distribution of the software without specific, written prior
25  * permission.  Furthermore if you modify this software you must label
26  * your software as modified software and not distribute it in such a
27  * fashion that it might be confused with the original M.I.T. software.
28  * M.I.T. makes no representations about the suitability of
29  * this software for any purpose.  It is provided "as is" without express
30  * or implied warranty.
31  *
32  *
33  * krb5_copy_authdata()
34  */
35 
36 #include <k5-int.h>
37 
38 /*ARGSUSED*/
39 static krb5_error_code
40 krb5_copy_authdatum(context, inad, outad)
41     krb5_context context;
42 const krb5_authdata *inad;
43 krb5_authdata **outad;
44 {
45     krb5_authdata *tmpad;
46 
47     if (!(tmpad = (krb5_authdata *)MALLOC(sizeof(*tmpad))))
48 	return ENOMEM;
49 #ifdef HAVE_C_STRUCTURE_ASSIGNMENT
50     *tmpad = *inad;
51 #else
52     (void) memcpy(tmpad, inad, sizeof(krb5_authdata));
53 #endif
54     if (!(tmpad->contents = (krb5_octet *)MALLOC(inad->length))) {
55 	krb5_xfree_wrap(tmpad, inad->length);
56 	return ENOMEM;
57     }
58     (void) memcpy((char *)tmpad->contents, (char *)inad->contents,
59 	inad->length);
60     *outad = tmpad;
61     return 0;
62 }
63 
64 /*
65  * Copy an authdata array, with fresh allocation.
66  */
67 KRB5_DLLIMP krb5_error_code KRB5_CALLCONV
68 krb5_copy_authdata(context, inauthdat, outauthdat)
69     krb5_context context;
70     krb5_authdata FAR * const FAR * inauthdat;
71     krb5_authdata FAR * FAR * FAR *outauthdat;
72 {
73     krb5_error_code retval;
74     krb5_authdata ** tempauthdat;
75     register int nelems = 0;
76 
77     if (!inauthdat) {
78 	    *outauthdat = 0;
79 	    return 0;
80     }
81 
82     while (inauthdat[nelems]) nelems++;
83 
84     /* one more for a null terminated list */
85     if (!(tempauthdat = (krb5_authdata **) CALLOC(nelems+1,
86 						  sizeof(*tempauthdat))))
87 	return ENOMEM;
88 
89     for (nelems = 0; inauthdat[nelems]; nelems++) {
90 	retval = krb5_copy_authdatum(context, inauthdat[nelems],
91 				     &tempauthdat[nelems]);
92 	if (retval) {
93 	    krb5_free_authdata(context, tempauthdat);
94 	    return retval;
95 	}
96     }
97 
98     *outauthdat = tempauthdat;
99     return 0;
100 }
101