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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZFormatAuthenticNotice function.
*
* Created by: Robert French
* Copyright (c) 1987,1988 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include "internal.h"
#ifdef ZEPHYR_USES_KERBEROS
Code_t ZFormatAuthenticNotice(notice, buffer, buffer_len, len, session)
ZNotice_t *notice;
register char *buffer;
register int buffer_len;
int *len;
C_Block session;
{
ZNotice_t newnotice;
char *ptr;
int retval, hdrlen;
newnotice = *notice;
newnotice.z_auth = 1;
newnotice.z_authent_len = 0;
newnotice.z_ascii_authent = "";
if ((retval = Z_FormatRawHeader(&newnotice, buffer, buffer_len,
&hdrlen, &ptr, NULL)) != ZERR_NONE)
return (retval);
#ifdef NOENCRYPTION
newnotice.z_checksum = 0;
#else
newnotice.z_checksum =
(ZChecksum_t)des_quad_cksum(buffer, NULL, ptr - buffer, 0, (C_Block*)session);
#endif
if ((retval = Z_FormatRawHeader(&newnotice, buffer, buffer_len,
&hdrlen, NULL, NULL)) != ZERR_NONE)
return (retval);
ptr = buffer+hdrlen;
if (newnotice.z_message_len+hdrlen > buffer_len)
return (ZERR_PKTLEN);
(void) memcpy(ptr, newnotice.z_message, newnotice.z_message_len);
*len = hdrlen+newnotice.z_message_len;
if (*len > Z_MAXPKTLEN)
return (ZERR_PKTLEN);
return (ZERR_NONE);
}
#endif
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