ifmib.c

嵌入式RMON,RMON为Remote monitor的缩写,基于SNMP为网络提供主动监控及错误告警,智能交换路由必备协议

/* Beholder RMON ethernet network monitor,Copyright (C) 1993 DNPAP group */
/* See file COPYING 'GNU General Public Licence' for copyright details   */
#include <stdlib.h>
#include <stdio.h>
#include <config.h>
#include <snmp.h>
#include <mibrqs.h>
#include <mibsup.h>
#include <mac.h>

#include "ifmib.h"


static MAC_STAT stats;

static BOOLEAN IfMib(SNMP_OBJECT* obj, WORD idlen);
static BOOLEAN IfMibNext(SNMP_OBJECT* obj, WORD idlen);



BOOLEAN IfMib(SNMP_OBJECT* obj, WORD idlen)
{
    if (obj->Request != SNMP_PDU_NEXT)
    {
        if (obj->IdLen != idlen + 1)
            return FALSE;
        return TRUE;
    }
    if (obj->IdLen < idlen || obj->IdLen > idlen + 1)	/* bad index */
        return FALSE;
    return TRUE;
}

BOOLEAN IfMibNext(SNMP_OBJECT* obj, WORD idlen)
{
    if (obj->IdLen == idlen)
	{
        obj->Id[idlen] = 1;
        obj->IdLen = idlen + 1;
        return TRUE;
	}
	else
	if (MacIfaceCount() > obj->Id[idlen])
    {
        obj->Id[idlen]++;
        obj->IdLen = idlen + 1;
        return TRUE;
    }

    return FALSE;
}


WORD ifNumber(SNMP_OBJECT *obj, WORD idlen)
{
    if (MibSimple(obj, idlen) == FALSE)
        return SNMP_NOSUCHNAME;
    obj->Syntax.LngInt = MacIfaceCount();
    return SNMP_NOERROR;
}


WORD ifIndex(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		obj->Syntax.LngInt = obj->Id[idlen];
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifDescr(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
    	sprintf(obj->Syntax.BufChr, "%s", iface->descr);
		obj->SyntaxLen = strlen(obj->Syntax.BufChr);
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifType(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		obj->Syntax.LngInt = iface->type;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifMtu(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		obj->Syntax.LngInt = iface->mtu;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifSpeed(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		obj->Syntax.LngUns = iface->speed;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifPhysAddress(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		memcpy(obj->Syntax.BufChr, iface->addr, obj->SyntaxLen = iface->addrLength);
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifAdminStatus(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		obj->Syntax.LngInt = (iface->statusAdmin == TRUE ? 1 : 2);
		return SNMP_NOERROR;
	case SNMP_PDU_SET:							
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		if (obj->Syntax.LngInt != 1 && obj->Syntax.LngInt != 2)
			return SNMP_BADVALUE;
		iface->statusAdmin = (obj->Syntax.LngInt == 1 ? TRUE : FALSE);
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifOperStatus(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		obj->Syntax.LngInt = (iface->statusOper == TRUE ? 1 : 2);
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifLastChange(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		obj->Syntax.LngUns = 0;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifInOctets(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.inOctets;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifInUcastPkts(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.inUcastPkts;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifInNUcastPkts(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.inNUcastPkts;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifInDiscards(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.inDiscards;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifInErrors(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.inErrors;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifInUnknownProtos(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.inUnknownProtos;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifOutOctets(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.outOctets;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifOutUcastPkts(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.outUcastPkts;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifOutNUcastPkts(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.outNUcastPkts;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifOutDiscards(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.outDiscards;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifOutErrors(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.outErrors;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifOutQLen(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		MacStatistics(iface, &stats);
		obj->Syntax.LngUns = stats.outQLen;
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}


WORD ifSpecific(SNMP_OBJECT *obj, WORD idlen)
{
MAC_IFACE *iface;				   
LONG dot3[] = { 1,3,6,1,2,1,10,7 };
LONG oidnull[] = { 0, 0 };
			
    if (IfMib(obj, idlen) == FALSE)
		return SNMP_NOSUCHNAME;
		
	switch (obj->Request)
	{
	case SNMP_PDU_NEXT:
        if (IfMibNext(obj, idlen) == FALSE)
			return SNMP_NOSUCHNAME;
	case SNMP_PDU_GET:
		if ((iface = MacIfaceGet(obj->Id[idlen])) == NULL)
			return SNMP_NOSUCHNAME;
		switch (iface->type)
		{
		case MAC_TYPE_ETHERNET_CSMACD:
		case MAC_TYPE_88023_CSMACD:
			memcpy(obj->Syntax.BufInt, dot3, sizeof(dot3));
			obj->SyntaxLen = sizeof(dot3)/sizeof(dot3[0]);
			break;
		default:
			memcpy(obj->Syntax.BufInt, oidnull, sizeof(oidnull));
			obj->SyntaxLen = sizeof(oidnull)/sizeof(oidnull[0]);
			break;
		}
		return SNMP_NOERROR;
	case SNMP_PDU_SET:
		return SNMP_READONLY;
	}
    return SNMP_GENERROR;
}