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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
*
* $Id$
*
* Copyright (c) 1987,1991 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#ifndef lint
static const char rcsid_ZSendPacket_c[] =
"$Id$";
#endif
#include <internal.h>
#include <sys/socket.h>
static int wait_for_hmack(ZNotice_t *, void *);
Code_t
ZSendPacket(char *packet,
int len,
int waitforack)
{
Code_t retval;
struct sockaddr_in dest;
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);
retval = Z_WaitForNotice(&acknotice, wait_for_hmack, ¬ice.z_uid,
HM_TIMEOUT);
if (retval == ETIMEDOUT)
return ZERR_HMDEAD;
if (retval == ZERR_NONE)
ZFreeNotice (&acknotice);
return retval;
}
static int
wait_for_hmack(ZNotice_t *notice,
void *uid)
{
return (notice->z_kind == HMACK && ZCompareUID(¬ice->z_uid, (ZUnique_Id_t *)uid));
}
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