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/* This file is part of the Project Athena Zephyr Notification System.
* It contains source for the ZSendPacket 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>
#include <sys/socket.h>
Code_t ZSendPacket(packet,len)
ZPacket_t packet;
int len;
{
int findack();
Code_t retval;
struct sockaddr_in dest;
struct timeval tv;
int auth,t1,t2,t3,i;
ZPacket_t ackpack;
ZNotice_t notice;
if (!packet || len < 0 || len > Z_MAXPKTLEN)
return (ZERR_ILLVAL);
if (ZGetFD() < 0)
if ((retval = ZOpenPort(0)) != ZERR_NONE)
return (retval);
dest = ZGetDestAddr();
if (sendto(ZGetFD(),packet,len,0,&dest,sizeof(dest)) < 0)
return (errno);
ZParseNotice(packet,len,¬ice,0,0);
if (notice.z_kind == UNSAFE || notice.z_kind == HMACK ||
notice.z_kind == SERVACK || __HM_set)
return (ZERR_NONE);
tv.tv_sec = 0;
tv.tv_usec = 400000;
for (i=0;i<12;i++) {
select(0,&t1,&t2,&t3,&tv);
retval = ZCheckIfNotice(ackpack,sizeof ackpack,¬ice,
&auth,findack,(char *)¬ice.z_uid);
if (retval == ZERR_NONE)
return (ZERR_NONE);
if (retval != ZERR_NONOTICE)
return (retval);
}
return (ZERR_HMDEAD);
}
static int findack(notice,uid)
ZNotice_t *notice;
ZUnique_Id_t *uid;
{
return (ZCompareUID(uid,¬ice->z_uid));
}
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