icmp.c

非常不错的网管开发包

u_char *
var_icmp(struct variable *vp,
	 oid *name,
	 size_t *length,
	 int exact,
	 size_t *var_len,
	 WriteMethod **write_method)
{
    register int i;
    static struct icmpstat icmpstat;

   if (header_icmp(vp, name, length, exact, var_len, write_method) == MATCH_FAILED )
	return NULL;

    /*
     *        Get the ICMP statistics from the kernel...
     */
#if !defined(CAN_USE_SYSCTL) || !defined(ICMPCTL_STATS)
    auto_nlist(ICMPSTAT_SYMBOL, (char *)&icmpstat, sizeof (icmpstat));
#else
    {
	    int sname[] = { CTL_NET, PF_INET, IPPROTO_ICMP, ICMPCTL_STATS };
	    size_t len;
	    
	    len = sizeof icmpstat;
	    if (sysctl(sname, 4, &icmpstat, &len, 0, 0) < 0)
		    return NULL;
    }
#endif /* use sysctl */

    switch (vp->magic) {
	case ICMPINMSGS:
	    long_return = icmpstat.icps_badcode + icmpstat.icps_tooshort +
			  icmpstat.icps_checksum + icmpstat.icps_badlen;
	    for (i=0; i <= ICMP_MAXTYPE; i++)
		long_return += icmpstat.icps_inhist[i];
	    return (u_char *)&long_return;
	case ICMPINERRORS:
	    long_return = icmpstat.icps_badcode + icmpstat.icps_tooshort +
			  icmpstat.icps_checksum + icmpstat.icps_badlen;
	    return (u_char *)&long_return;
	case ICMPINDESTUNREACHS:
          long_return = icmpstat.icps_inhist[ICMP_UNREACH];
          return (u_char *) &long_return;
	case ICMPINTIMEEXCDS:
          long_return = icmpstat.icps_inhist[ICMP_TIMXCEED];
          return (u_char *) &long_return;
	case ICMPINPARMPROBS:
          long_return = icmpstat.icps_inhist[ICMP_PARAMPROB];
          return (u_char *) &long_return;
	case ICMPINSRCQUENCHS:
          long_return = icmpstat.icps_inhist[ICMP_SOURCEQUENCH];
          return (u_char *) &long_return;
	case ICMPINREDIRECTS:
          long_return = icmpstat.icps_inhist[ICMP_REDIRECT];
          return (u_char *) &long_return;
	case ICMPINECHOS:
          long_return = icmpstat.icps_inhist[ICMP_ECHO];
          return (u_char *) &long_return;
	case ICMPINECHOREPS:
          long_return = icmpstat.icps_inhist[ICMP_ECHOREPLY];
          return (u_char *) &long_return;
	case ICMPINTIMESTAMPS:
          long_return = icmpstat.icps_inhist[ICMP_TSTAMP];
          return (u_char *) &long_return;
	case ICMPINTIMESTAMPREPS:
          long_return = icmpstat.icps_inhist[ICMP_TSTAMPREPLY];
          return (u_char *) &long_return;
	case ICMPINADDRMASKS:
          long_return = icmpstat.icps_inhist[ICMP_MASKREQ];
          return (u_char *) &long_return;
	case ICMPINADDRMASKREPS:
          long_return = icmpstat.icps_inhist[ICMP_MASKREPLY];
          return (u_char *) &long_return;
	case ICMPOUTMSGS:
	    long_return = icmpstat.icps_oldshort + icmpstat.icps_oldicmp;
	    for (i=0; i <= ICMP_MAXTYPE; i++)
		long_return += icmpstat.icps_outhist[i];
	    return (u_char *)&long_return;
	case ICMPOUTERRORS:
	    long_return = icmpstat.icps_oldshort + icmpstat.icps_oldicmp;
	    return (u_char *)&long_return;
	case ICMPOUTDESTUNREACHS:
          long_return = icmpstat.icps_outhist[ICMP_UNREACH];
          return (u_char *) &long_return;
	case ICMPOUTTIMEEXCDS:
          long_return = icmpstat.icps_outhist[ICMP_TIMXCEED];
          return (u_char *) &long_return;
	case ICMPOUTPARMPROBS:
          long_return = icmpstat.icps_outhist[ICMP_PARAMPROB];
          return (u_char *) &long_return;
	case ICMPOUTSRCQUENCHS:
          long_return = icmpstat.icps_outhist[ICMP_SOURCEQUENCH];
          return (u_char *) &long_return;
	case ICMPOUTREDIRECTS:
          long_return = icmpstat.icps_outhist[ICMP_REDIRECT];
          return (u_char *) &long_return;
	case ICMPOUTECHOS:
          long_return = icmpstat.icps_outhist[ICMP_ECHO];
          return (u_char *) &long_return;
	case ICMPOUTECHOREPS:
          long_return = icmpstat.icps_outhist[ICMP_ECHOREPLY];
          return (u_char *) &long_return;
	case ICMPOUTTIMESTAMPS:
          long_return = icmpstat.icps_outhist[ICMP_TSTAMP];
          return (u_char *) &long_return;
	case ICMPOUTTIMESTAMPREPS:
          long_return = icmpstat.icps_outhist[ICMP_TSTAMPREPLY];
          return (u_char *) &long_return;
	case ICMPOUTADDRMASKS:
          long_return = icmpstat.icps_outhist[ICMP_MASKREQ];
          return (u_char *) &long_return;
	case ICMPOUTADDRMASKREPS:
          long_return = icmpstat.icps_outhist[ICMP_MASKREPLY];
          return (u_char *) &long_return;
	default:
	    DEBUGMSGTL(("snmpd", "unknown sub-id %d in var_icmp\n", vp->magic));
    }

    return NULL;
}

#endif /* not HAVE_SYS_TCPIPSTATS_H */

#else /* linux */

u_char *
var_icmp(struct variable *vp,
	 oid *name,
	 size_t *length,
	 int exact,
	 size_t *var_len,
	 WriteMethod **write_method)
{
    static struct icmp_mib icmpstat;

   if (header_icmp(vp, name, length, exact, var_len, write_method) == MATCH_FAILED )
	return(NULL);

    linux_read_icmp_stat (&icmpstat);

    switch (vp->magic){
    case ICMPINMSGS: return (u_char *) &icmpstat.IcmpInMsgs;
    case ICMPINERRORS: return (u_char *) &icmpstat.IcmpInErrors;
    case ICMPINDESTUNREACHS: return (u_char *) &icmpstat.IcmpInDestUnreachs;
    case ICMPINTIMEEXCDS: return (u_char *) &icmpstat.IcmpInTimeExcds;
    case ICMPINPARMPROBS: return (u_char *) &icmpstat.IcmpInParmProbs;
    case ICMPINSRCQUENCHS: return (u_char *) &icmpstat.IcmpInSrcQuenchs;
    case ICMPINREDIRECTS: return (u_char *) &icmpstat.IcmpInRedirects;
    case ICMPINECHOS: return (u_char *) &icmpstat.IcmpInEchos;
    case ICMPINECHOREPS: return (u_char *) &icmpstat.IcmpInEchoReps;
    case ICMPINTIMESTAMPS: return (u_char *) &icmpstat.IcmpInTimestamps;
    case ICMPINTIMESTAMPREPS: return (u_char *) &icmpstat.IcmpInTimestampReps;
    case ICMPINADDRMASKS: return (u_char *) &icmpstat.IcmpInAddrMasks;
    case ICMPINADDRMASKREPS: return (u_char *) &icmpstat.IcmpInAddrMaskReps;
    case ICMPOUTMSGS: return (u_char *) &icmpstat.IcmpOutMsgs;
    case ICMPOUTERRORS: return (u_char *) &icmpstat.IcmpOutErrors;
    case ICMPOUTDESTUNREACHS: return (u_char *) &icmpstat.IcmpOutDestUnreachs;
    case ICMPOUTTIMEEXCDS: return (u_char *) &icmpstat.IcmpOutTimeExcds;
    case ICMPOUTPARMPROBS: return (u_char *) &icmpstat.IcmpOutParmProbs;
    case ICMPOUTSRCQUENCHS: return (u_char *) &icmpstat.IcmpOutSrcQuenchs;
    case ICMPOUTREDIRECTS: return (u_char *) &icmpstat.IcmpOutRedirects;
    case ICMPOUTECHOS: return (u_char *) &icmpstat.IcmpOutEchos;
    case ICMPOUTECHOREPS: return (u_char *) &icmpstat.IcmpOutEchoReps;
    case ICMPOUTTIMESTAMPS: return (u_char *) &icmpstat.IcmpOutTimestamps;
    case ICMPOUTTIMESTAMPREPS: return (u_char *)&icmpstat.IcmpOutTimestampReps;
    case ICMPOUTADDRMASKS: return (u_char *) &icmpstat.IcmpOutAddrMasks;
    case ICMPOUTADDRMASKREPS: return (u_char *) &icmpstat.IcmpOutAddrMaskReps;

    default:
      DEBUGMSGTL(("snmpd", "unknown sub-id %d in var_icmp\n", vp->magic));
    }
    return NULL;

}

#endif /* linux */
#else /* solaris2 */

u_char *
var_icmp(struct variable *vp,
	 oid *name,
	 size_t *length,
	 int exact,
	 size_t *var_len,
	 WriteMethod **write_method)
{
    mib2_icmp_t icmpstat;

    if (header_icmp(vp, name, length, exact, var_len, write_method) == MATCH_FAILED )
	return(NULL);

    /*
     *	Get the ICMP statistics from the kernel...
     */
    if (getMibstat(MIB_ICMP, &icmpstat, sizeof(mib2_icmp_t), GET_FIRST, &Get_everything, NULL) < 0)
      return (NULL);		/* Things are ugly ... */

    switch (vp->magic){
	case ICMPINMSGS:
      		long_return = icmpstat.icmpInMsgs;
      		break;
	case ICMPINERRORS:
      		long_return = icmpstat.icmpInErrors;
      		break;
	case ICMPINDESTUNREACHS:
      		long_return = icmpstat.icmpInDestUnreachs;
      		break;
	case ICMPINTIMEEXCDS:
      		long_return = icmpstat.icmpInTimeExcds;
      		break;
	case ICMPINPARMPROBS:
      		long_return = icmpstat.icmpInParmProbs;
      		break;
	case ICMPINSRCQUENCHS:
      		long_return = icmpstat.icmpInSrcQuenchs;
      		break;
	case ICMPINREDIRECTS:
      		long_return = icmpstat.icmpInRedirects;
      		break;
	case ICMPINECHOS:
      		long_return = icmpstat.icmpInEchos;
      		break;
	case ICMPINECHOREPS:
      		long_return = icmpstat.icmpInEchoReps;
      		break;
	case ICMPINTIMESTAMPS:
      		long_return = icmpstat.icmpInTimestamps;
      		break;
	case ICMPINTIMESTAMPREPS:
      		long_return = icmpstat.icmpInTimestampReps;
      		break;
	case ICMPINADDRMASKS:
      		long_return = icmpstat.icmpInAddrMasks;
      		break;
	case ICMPINADDRMASKREPS:
      		long_return = icmpstat.icmpInAddrMaskReps;
      		break;
	case ICMPOUTMSGS:
      		long_return = icmpstat.icmpOutMsgs;
      		break;
	case ICMPOUTERRORS:
      		long_return = icmpstat.icmpOutErrors;
      		break;
	case ICMPOUTDESTUNREACHS:
      		long_return = icmpstat.icmpOutDestUnreachs;
      		break;
	case ICMPOUTTIMEEXCDS:
      		long_return = icmpstat.icmpOutTimeExcds;
      		break;
	case ICMPOUTPARMPROBS:
      		long_return = icmpstat.icmpOutParmProbs;
      		break;
	case ICMPOUTSRCQUENCHS:
      		long_return = icmpstat.icmpOutSrcQuenchs;
      		break;
	case ICMPOUTREDIRECTS:
      		long_return = icmpstat.icmpOutRedirects;
      		break;
	case ICMPOUTECHOS:
      		long_return = icmpstat.icmpOutEchos;
      		break;
	case ICMPOUTECHOREPS:
      		long_return = icmpstat.icmpOutEchoReps;
      		break;
	case ICMPOUTTIMESTAMPS:
      		long_return = icmpstat.icmpOutTimestamps;
      		break;
	case ICMPOUTTIMESTAMPREPS:
      		long_return = icmpstat.icmpOutTimestampReps;
      		break;
	case ICMPOUTADDRMASKS:
      		long_return = icmpstat.icmpOutAddrMasks;
      		break;
	case ICMPOUTADDRMASKREPS:
      		long_return = icmpstat.icmpOutAddrMaskReps;
      		break;
	default:
		DEBUGMSGTL(("snmpd", "unknown sub-id %d in var_icmp\n", vp->magic));
                return(NULL);
    }
    return ((u_char *) &long_return);
}
#endif /* solaris2 */


	/*********************
	 *
	 *  Internal implementation functions
	 *
	 *********************/


#ifdef linux
/*
 * lucky days. since 1.1.16 the icmp statistics are avail by the proc
 * file-system.
 */

static void
linux_read_icmp_stat (struct icmp_mib *icmpstat)
{
  FILE *in = fopen ("/proc/net/snmp", "r");
  char line [1024];

  memset ((char *) icmpstat,(0), sizeof (*icmpstat));

  if (! in)
    return;

  while (line == fgets (line, sizeof(line), in))
    {
      if (26 == sscanf (line,
"Icmp: %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
   &icmpstat->IcmpInMsgs, &icmpstat->IcmpInErrors, &icmpstat->IcmpInDestUnreachs, 
   &icmpstat->IcmpInTimeExcds, &icmpstat->IcmpInParmProbs, &icmpstat->IcmpInSrcQuenchs,
   &icmpstat->IcmpInRedirects, &icmpstat->IcmpInEchos, &icmpstat->IcmpInEchoReps, 
   &icmpstat->IcmpInTimestamps, &icmpstat->IcmpInTimestampReps, &icmpstat->IcmpInAddrMasks,
   &icmpstat->IcmpInAddrMaskReps, &icmpstat->IcmpOutMsgs, &icmpstat->IcmpOutErrors,
   &icmpstat->IcmpOutDestUnreachs, &icmpstat->IcmpOutTimeExcds, 
   &icmpstat->IcmpOutParmProbs, &icmpstat->IcmpOutSrcQuenchs, &icmpstat->IcmpOutRedirects,
   &icmpstat->IcmpOutEchos, &icmpstat->IcmpOutEchoReps, &icmpstat->IcmpOutTimestamps, 
   &icmpstat->IcmpOutTimestampReps, &icmpstat->IcmpOutAddrMasks,
   &icmpstat->IcmpOutAddrMaskReps))
	break;
    }
  fclose (in);
}

#endif /* linux */