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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".
*/
/* $Header$ */
#ifndef lint
static char rcsid_ZSendPacket_c[] = "$Header$";
#endif lint
#include <zephyr/mit-copyright.h>
#include <zephyr/zephyr_internal.h>
#include <sys/socket.h>
Code_t ZSendPacket(packet, len, waitforack)
char *packet;
int len;
int waitforack;
{
int wait_for_hmack();
Code_t retval;
struct sockaddr_in dest;
struct timeval tv;
int i;
ZNotice_t notice, acknotice;
if (!packet || len < 0)
return (ZERR_ILLVAL);
if (len > Z_MAXPKTLEN)
return (ZERR_PKTLEN);
if (ZGetFD() < 0)
if ((retval = ZOpenPort((u_short *)0)) != ZERR_NONE)
return (retval);
dest = ZGetDestAddr();
if (sendto(ZGetFD(), packet, len, 0, (struct sockaddr *)&dest,
sizeof(dest)) < 0)
return (errno);
if (!waitforack)
return (ZERR_NONE);
if ((retval = ZParseNotice(packet, len, ¬ice)) != ZERR_NONE)
return (retval);
tv.tv_sec = 0;
tv.tv_usec = 500000;
for (i=0;i<HM_TIMEOUT*2;i++) {
if (select(0, (fd_set *) 0, (fd_set *) 0, (fd_set *) 0, &tv) < 0)
return (errno);
retval = ZCheckIfNotice(&acknotice, (struct sockaddr_in *)0,
wait_for_hmack, (char *)¬ice.z_uid);
if (retval == ZERR_NONE) {
ZFreeNotice(&acknotice);
return (ZERR_NONE);
}
if (retval != ZERR_NONOTICE)
return (retval);
}
return (ZERR_HMDEAD);
}
static wait_for_hmack(notice, uid)
ZNotice_t *notice;
ZUnique_Id_t *uid;
{
return (notice->z_kind == HMACK && ZCompareUID(¬ice->z_uid, uid));
}
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