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/*
* Copyright 1994 by OpenVision Technologies, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appears in all copies and
* that both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of OpenVision not be used
* in advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. OpenVision makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* OPENVISION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL OPENVISION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include "krb5.h"
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/signal.h>
#include <netinet/in.h>
#include <krb.h>
#include "krb524.h"
/*
* I'm sure that this is reinventing the wheel, but I don't know where
* the wheel is hidden.
*/
int encode_v4tkt KRB5_PROTOTYPE((KTEXT_ST *, char *, int *)),
encode_ktext KRB5_PROTOTYPE((char **, int *, KTEXT_ST *)),
encode_bytes KRB5_PROTOTYPE((char **, int *, char *, int)),
encode_int32 KRB5_PROTOTYPE((char **, int *, krb5_int32 *));
int decode_v4tkt KRB5_PROTOTYPE((KTEXT_ST *, char *, int *)),
decode_ktext KRB5_PROTOTYPE((char **, int *, KTEXT_ST *)),
decode_bytes KRB5_PROTOTYPE((char **, int *, char *, int)),
decode_int32 KRB5_PROTOTYPE((char **, int *, krb5_int32 *));
int encode_bytes(out, outlen, in, len)
char **out;
int *outlen;
char *in;
int len;
{
if (len > *outlen)
return KRB524_ENCFULL;
memcpy(*out, in, len);
*out += len;
*outlen -= len;
return 0;
}
int encode_int32(out, outlen, v)
char **out;
int *outlen;
krb5_int32 *v;
{
int nv;
nv = htonl(*v);
return encode_bytes(out, outlen, (char *) &nv, sizeof(nv));
}
int encode_v4tkt(v4tkt, buf, encoded_len)
KTEXT_ST *v4tkt;
char *buf;
int *encoded_len;
{
int buflen, ret;
buflen = *encoded_len;
if ((ret = encode_int32(&buf, &buflen, &v4tkt->length)))
return ret;
if ((ret = encode_bytes(&buf, &buflen, (char *)v4tkt->dat, MAX_KTXT_LEN)))
return ret;
if ((ret = encode_int32(&buf, &buflen, (krb5_int32 *) &v4tkt->mbz)))
return ret;
*encoded_len -= buflen;
return 0;
}
/* decode functions */
int decode_bytes(out, outlen, in, len)
char **out;
int *outlen;
char *in;
int len;
{
if (len > *outlen)
return KRB524_DECEMPTY;
memcpy(in, *out, len);
*out += len;
*outlen -= len;
return 0;
}
int decode_int32(out, outlen, v)
char **out;
int *outlen;
krb5_int32 *v;
{
int ret;
int nv;
if ((ret = decode_bytes(out, outlen, (char *) &nv, sizeof(nv))))
return ret;
*v = ntohl(nv);
return 0;
}
int decode_v4tkt(v4tkt, buf, encoded_len)
KTEXT_ST *v4tkt;
char *buf;
int *encoded_len;
{
int buflen, ret;
buflen = *encoded_len;
if ((ret = decode_int32(&buf, &buflen, &v4tkt->length)))
return ret;
if ((ret = decode_bytes(&buf, &buflen, (char *)v4tkt->dat, MAX_KTXT_LEN)))
return ret;
if ((ret = decode_int32(&buf, &buflen, (krb5_int32 *) &v4tkt->mbz)))
return ret;
*encoded_len -= buflen;
return 0;
}
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