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/* This file is part of the Project Athena Zephyr Notification System.
* It contains the ZhmStat() function.
*
* Created by: Marc Horowitz
*
* $Id$
*
* Copyright (c) 1996 by the Massachusetts Institute of Technology.
* For copying and distribution information, see the file
* "mit-copyright.h".
*/
#include <internal.h>
#include <sys/socket.h>
#ifndef INADDR_LOOPBACK
#define INADDR_LOOPBACK 0x7f000001
#endif
Code_t
ZhmStat(struct in_addr *hostaddr,
ZNotice_t *notice)
{
struct servent *sp;
struct sockaddr_in sin;
ZNotice_t req;
Code_t code;
struct timeval tv;
fd_set readers;
(void) memset((char *)&sin, 0, sizeof(struct sockaddr_in));
sp = getservbyname(HM_SVCNAME, "udp");
sin.sin_port = (sp) ? sp->s_port : HM_SVC_FALLBACK;
sin.sin_family = AF_INET;
if (hostaddr)
sin.sin_addr = *hostaddr;
else
sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
(void) memset((char *)&req, 0, sizeof(req));
req.z_kind = STAT;
req.z_port = 0;
req.z_class = HM_STAT_CLASS;
req.z_class_inst = HM_STAT_CLIENT;
req.z_opcode = HM_GIMMESTATS;
req.z_sender = "";
req.z_recipient = "";
req.z_default_format = "";
req.z_message_len = 0;
if ((code = ZSetDestAddr(&sin)) != ZERR_NONE)
return(code);
if ((code = ZSendNotice(&req, ZNOAUTH)) != ZERR_NONE)
return(code);
/* Wait up to ten seconds for a response. */
FD_ZERO(&readers);
FD_SET(ZGetFD(), &readers);
tv.tv_sec = 10;
tv.tv_usec = 0;
code = select(ZGetFD() + 1, &readers, NULL, NULL, &tv);
if (code < 0 && errno != EINTR)
return(errno);
if (code == 0 || (code < 0 && errno == EINTR) || ZPending() == 0)
return(ZERR_HMDEAD);
return(ZReceiveNotice(notice, (struct sockaddr_in *) 0));
}
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