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