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/* This file is part of the Project Athena Zephyr Notification System.
* It contains the ZhmStat() function.
*
* Created by: Marc Horowitz
*
* $Source$
* $Author$
*
* 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>
static int outoftime = 0;
static RETSIGTYPE timeout()
{
outoftime = 1;
}
Code_t ZhmStat(hostaddr, notice)
struct in_addr *hostaddr;
ZNotice_t *notice;
{
struct servent *sp;
struct sockaddr_in sin;
ZNotice_t req;
Code_t code;
#ifdef _POSIX_VERSION
struct sigaction sa;
#endif
(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);
#ifdef _POSIX_VERSION
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
sa.sa_handler = timeout;
(void) sigaction(SIGALRM, &sa, (struct sigaction *)0);
#else
(void) signal(SIGALRM,timeout);
#endif
outoftime = 0;
(void) alarm(10);
if (((code = ZReceiveNotice(notice, (struct sockaddr_in *) 0))
!= ZERR_NONE) &&
code != EINTR)
return(code);
(void) alarm(0);
if (outoftime)
return(ZERR_HMDEAD);
return(ZERR_NONE);
}
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