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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZPeekIfNotice function.
*
* Created by: Robert French
*
* $Source$
* $Author$
*
* Copyright (c) 1987 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
/* $Header$ */
#include <zephyr/mit-copyright.h>
#include <zephyr/zephyr_internal.h>
Code_t ZPeekIfNotice(buffer,buffer_len,notice,auth,predicate,args)
ZPacket_t buffer;
int buffer_len;
ZNotice_t *notice;
int *auth;
int (*predicate)();
char *args;
{
ZNotice_t tmpnotice;
int qcount,retval,tmpauth;
struct _Z_InputQ *qptr;
if (__Q_Length)
retval = Z_ReadEnqueue();
else
retval = Z_ReadWait();
if (retval != ZERR_NONE)
return (retval);
qptr = __Q_Head;
qcount = __Q_Length;
for (;;qcount--) {
if ((retval = ZParseNotice(qptr->packet,qptr->packet_len,
&tmpnotice,&tmpauth,&qptr->from))
!= ZERR_NONE)
return (retval);
if ((predicate)(&tmpnotice,args)) {
if (qptr->packet_len > buffer_len)
return (ZERR_PKTLEN);
bcopy(qptr->packet,buffer,qptr->packet_len);
if ((retval = ZParseNotice(buffer,qptr->packet_len,
notice,auth,&qptr->from))
!= ZERR_NONE)
return (retval);
return (ZERR_NONE);
}
/* Grunch! */
if (qcount == 1) {
if ((retval = Z_ReadWait()) != ZERR_NONE)
return (retval);
qcount++;
qptr = __Q_Tail;
}
else
qptr = qptr->next;
}
}
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