Logo Search packages:      
Sourcecode: zephyr version File versions  Download package

zhm_client.c

/* This file is part of the Project Athena Zephyr Notification System.
 * It contains the hostmanager <--> client interaction routines.
 *
 *      Created by:     David C. Jedlinsky
 *
 *      $Id: zhm_client.c,v 1.12 2000/04/05 14:57:37 ghudson Exp $
 *
 *      Copyright (c) 1987 by the Massachusetts Institute of Technology.
 *      For copying and distribution information, see the file
 *      "mit-copyright.h". 
 */

#include "zhm.h"

#ifndef lint
#ifndef SABER
static char rcsid_hm_client_c[] = "$Id: zhm_client.c,v 1.12 2000/04/05 14:57:37 ghudson Exp $";
#endif /* SABER */
#endif /* lint */

extern int no_server, nclt, deactivated, noflushflag;
extern struct sockaddr_in cli_sin, serv_sin, from;

void transmission_tower(notice, packet, pak_len)
     ZNotice_t *notice;
     char *packet;
     int pak_len;
{
    ZNotice_t gack;
    Code_t ret;
    struct sockaddr_in gsin;

    nclt++;
    if (notice->z_kind == HMCTL) {
      if (!strcmp(notice->z_opcode, CLIENT_FLUSH)) {
          if (noflushflag)
            syslog(LOG_INFO, "Client requested hm flush (disabled).");
          else {
            send_flush_notice(HM_FLUSH);
            deactivated = 1;
          }
      } else if (!strcmp(notice->z_opcode, CLIENT_NEW_SERVER)) {
          new_server((char *)NULL);
      } else {
          syslog (LOG_INFO, "Bad control notice from client.");
      }
      return;
    } else {
      if (notice->z_kind != UNSAFE) {
          gack = *notice;
          gack.z_kind = HMACK;
          gack.z_message_len = 0;
          gack.z_multinotice = "";
          gsin = cli_sin;
          gsin.sin_port = from.sin_port;
          if (gack.z_port == 0)
            gack.z_port = from.sin_port;
          DPR2 ("Client Port = %u\n", ntohs(gack.z_port));
          notice->z_port = gack.z_port;
          if ((ret = ZSetDestAddr(&gsin)) != ZERR_NONE) {
            Zperr(ret);
            com_err("hm", ret, "setting destination");
          }
          /* Bounce ACK to library */
          if ((ret = send_outgoing(&gack)) != ZERR_NONE) {
            Zperr(ret);
            com_err("hm", ret, "sending raw notice");
          }
      }
    }
    if (!no_server) {
      DPR2 ("Server Port = %u\n", ntohs(serv_sin.sin_port));
      if ((ret = ZSetDestAddr(&serv_sin)) != ZERR_NONE) {
          Zperr(ret);
          com_err("hm", ret, "setting destination");
      }
      if ((ret = send_outgoing(notice)) != ZERR_NONE) {
          Zperr(ret);
          com_err("hm", ret, "while sending raw notice");
      }
    }
    if (add_notice_to_queue(notice, packet, &gsin, pak_len) != ZERR_NONE)
        syslog(LOG_INFO, "Hey! Insufficient memory to add notice to queue!");
}

Code_t
send_outgoing(notice)
ZNotice_t *notice;
{
    Code_t retval;
    char *packet;
    int length;

    if (!(packet = (char *) malloc((unsigned)sizeof(ZPacket_t))))
      return(ENOMEM);

    if ((retval = ZFormatSmallRawNotice(notice, packet, &length))
      != ZERR_NONE) {
      free(packet);
      return(retval);
    }
    retval = ZSendPacket(packet, length, 0);
    free(packet);
    return(retval);
}


Generated by  Doxygen 1.6.0   Back to index