69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/* 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));
|
|
}
|