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/*
* Copyright (C) 1998 by the FundsXpress, INC.
*
* All rights reserved.
*
* Export of this software from the United States of America may require
* a specific license from the United States Government. It is the
* responsibility of any person or organization contemplating export to
* obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of FundsXpress. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. FundsXpress makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include "k5-int.h"
#include "etypes.h"
#include "cksumtypes.h"
static krb5_boolean
etype_match(krb5_enctype e1, krb5_enctype e2)
{
const struct krb5_keytypes *ktp1, *ktp2;
ktp1 = find_enctype(e1);
ktp2 = find_enctype(e2);
return (ktp1 != NULL && ktp2 != NULL && ktp1->enc == ktp2->enc);
}
krb5_error_code KRB5_CALLCONV
krb5_c_keyed_checksum_types(krb5_context context, krb5_enctype enctype,
unsigned int *count, krb5_cksumtype **cksumtypes)
{
unsigned int i, c, nctypes;
krb5_cksumtype *ctypes;
const struct krb5_cksumtypes *ct;
*count = 0;
*cksumtypes = NULL;
nctypes = 0;
for (i = 0; i < krb5_cksumtypes_length; i++) {
ct = &krb5_cksumtypes_list[i];
if ((ct->keyhash && etype_match(ct->keyed_etype, enctype)) ||
(ct->flags & KRB5_CKSUMFLAG_DERIVE))
nctypes++;
}
ctypes = malloc(nctypes * sizeof(krb5_cksumtype));
if (ctypes == NULL)
return ENOMEM;
c = 0;
for (i = 0; i < krb5_cksumtypes_length; i++) {
ct = &krb5_cksumtypes_list[i];
if ((ct->keyhash && etype_match(ct->keyed_etype, enctype)) ||
(ct->flags & KRB5_CKSUMFLAG_DERIVE))
ctypes[c++] = krb5_cksumtypes_list[i].ctype;
}
*count = nctypes;
*cksumtypes = ctypes;
return 0;
}
void KRB5_CALLCONV
krb5_free_cksumtypes(krb5_context context, krb5_cksumtype *val)
{
free(val);
}
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