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/*
* $Source$
* $Author$
*
* Copyright 1990 by the Massachusetts Institute of Technology.
*
* For copying and distribution information, please see the file
* <krb5/mit-copyright.h>.
*
* krb5_decode_kdc_rep() function.
*/
#if !defined(lint) && !defined(SABER)
static char rcsid_decode_kdc_c[] =
"$Id$";
#endif /* !lint & !SABER */
#include <krb5/copyright.h>
#include <krb5/krb5.h>
#include <krb5/asn1.h>
#include <krb5/ext-proto.h>
/*
Takes a KDC_REP message and decrypts encrypted part using etype and
*key, putting result in *rep.
dec_rep->client,ticket,session.last_req,server,caddrs
are all set to allocated storage which should be freed by the caller
when finished with the response.
If the response isn't a KDC_REP (tgs or as), it returns an error from
the decoding routines (usually ISODE_50_LOCAL_ERR_BADDECODE).
returns errors from encryption routines, system errors
*/
krb5_error_code
krb5_decode_kdc_rep(DECLARG(const krb5_data *, enc_rep),
DECLARG(const krb5_keyblock *, key),
DECLARG(const krb5_enctype, etype),
DECLARG(krb5_kdc_rep **, dec_rep))
OLDDECLARG(const krb5_data *, enc_rep)
OLDDECLARG(const krb5_keyblock *, key)
OLDDECLARG(const krb5_enctype, etype)
OLDDECLARG(krb5_kdc_rep **, dec_rep)
{
krb5_error_code retval;
krb5_kdc_rep *local_dec_rep;
/* XXX maybe caller should specify type expected? */
if (!krb5_is_kdc_rep(enc_rep))
return KRB5KRB_AP_ERR_MSG_TYPE;
retval = decode_krb5_as_rep(enc_rep, &local_dec_rep);
switch (retval) {
case ISODE_50_LOCAL_ERR_BADMSGTYPE:
retval = decode_krb5_tgs_rep(enc_rep, &local_dec_rep);
switch (retval) {
case 0:
break;
default:
return(retval);
}
case 0:
break;
default:
return (retval);
}
if (local_dec_rep->etype != etype) {
krb5_free_kdc_rep(local_dec_rep);
return KRB5_WRONG_ETYPE;
}
if (retval = krb5_kdc_rep_decrypt_proc(key, 0, local_dec_rep)) {
krb5_free_kdc_rep(local_dec_rep);
return(retval);
}
*dec_rep = local_dec_rep;
return 0;
}
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