iptables.c

wm PNE 3.3 source code, running at more than vxworks6.x version.

/****************************************************************************
NAME:  ip_routetable_next

PURPOSE:  Locate the "next" object in the ip routing table

PARAMETERS:
	OIDC_T		Last component of the object id leading to 
			the leaf node in the MIB.  This identifies
			the particular "attribute" we want in the table.
			The following values give an example:
				1 - ipRouteDest
				2 - ipRouteIfIndex
				3 - ipRouteMetric1
				4 - ipRouteMetric2
				5 - ipRouteMetric3
				6 - ipRouteMetric4
				7 - ipRouteNextHop
				8 - ipRouteType
				9 - ipRouteProto
			       10 - ipRouteAge


	int		Number of components in the yet unused part of the
			object identifier
	OIDC_T *	Yet unused part of the object identifier
	OIDC_T *	Start of an area in which the object instance part
			of the name of the "next" object should be
			constructed.
	char *		User's cookie, passed unchanged from the LEAF macro
			in the mib.c

RETURNS:  int		>0 indicates how many object identifiers have
			been placed in the result list.
			0 if there is no "next" in the table

This routing's job is to use the target object instance, represented
by variables tcount and tlist, to ascertain whether there is a "next"
entry in the table.  If there is, the object instance of that element
is constructed in the return list area (rlist) and the number of elements
returned.  If there is no "next" a zero is returned.

It is possible that the target object instance may be empty (i.e.
tcount == 0) or incomplete (i.e. tcount < sizeof(normal object instance)).

If tcount == 0, the first object in the table should be returned.

The term "object instance" refers to that portion of an object identifier
used by SNMP to identify a particular instance of a tabular variable.
****************************************************************************/
/*ARGSUSED*/
/*lint -e715	*/
int
  ip_routetable_next(OIDC_T   last_match, /* Last component matched */
		     int      tcount,
		     OIDC_T  *tlist,
		     OIDC_T  *rlist,
		     char    *cookie)
{
return 0;
}
/*lint +e715	*/

/****************************************************************************
NAME:  ip_routetable_getint

PURPOSE:  Obtain an Integer type parameter from the ip routing table.
	  The integer parameters in this table (and their lastmatch value)
	  are:
		2 - ipRouteIfIndex
		3 - ipRouteMetric1
		4 - ipRouteMetric2
		5 - ipRouteMetric3
		6 - ipRouteMetric4
		8 - ipRouteType
		9 - ipRouteProto
	       10 - ipRouteAge
	
PARAMETERS:
	OIDC_T		Last component of the object id leading to 
			the leaf node in the MIB.  This is usually
			the identifier for the particular attribute
			in the table.
	int		Number of components in the unused part of the
			object identifier
	OIDC_T *	Unused part of the object identifier
	char *		User's cookie, passed unchanged from the LEAF macro
			in the mib.c

RETURNS:  INT_32_T	The value of the parameter.
****************************************************************************/
/*ARGSUSED*/
/*lint -e715	*/
INT_32_T
  ip_routetable_getint(OIDC_T  last_match,
		       int     tcount,
		       OIDC_T *tlist,
		       char   *cookie)
{
switch(last_match)
   {
   case 2:	/* ipRouteIfIndex */
   case 3:	/* ipRouteMetric1 */
   case 4:	/* ipRouteMetric2 */
   case 5:	/* ipRouteMetric3 */
   case 6:	/* ipRouteMetric4 */
   case 8:	/* ipRouteType */
   case 9:	/* ipRouteProto */
   case 10:	/* ipRouteAge */
        return (INT_32_T)*((int *)cookie);	/* TEMPORARY */
   }

return 0;
}
/*lint +e715	*/

/****************************************************************************
NAME:  ip_routetable_getipaddr

PURPOSE:  Obtain an IpAddress type parameter from the ip routing table.
	  The IpAddress parameters in this table (and their lastmatch value)
	  are:
		1 - ipRouteDest
		7 - ipRouteNextHop
	
PARAMETERS:
	OIDC_T		Last component of the object id leading to 
			the leaf node in the MIB.  This is usually
			the identifier for the particular attribute
			in the table.
	int		Number of components in the unused part of the
			object identifier
	OIDC_T *	Unused part of the object identifier
	char *		User's cookie, passed unchanged from the LEAF macro
			in the mib.c

RETURNS:  OCTET_T *	Pointer to a 4 byte long area in which the IP
			routing is found.  The routing bytes must be in
			standard network order.
****************************************************************************/
/*ARGSUSED*/
/*lint -e715	*/
OCTET_T *
  ip_routetable_getipaddr(OIDC_T  last_match,
			  int	  tcount,
			  OIDC_T *tlist,
			  char	 *cookie)
{
switch(last_match)
   {
   case 1:	/* ipRouteDest */
   case 7:	/* ipRouteNextHop */
        return (OCTET_T *)cookie;	/* TEMPORARY */
   	}

return (OCTET_T *)cookie;
}
/*lint +e715	*/

/****************************************************************************
NAME:  ip_routetable_setint

PURPOSE:  Alter an Integer type parameter within the ip routing table.
	  The integer parameters in this table (and their lastmatch value)
	  are:
		2 - ipRouteIfIndex
		3 - ipRouteMetric1
		4 - ipRouteMetric2
		5 - ipRouteMetric3
		6 - ipRouteMetric4
		8 - ipRouteType
		9 - ipRouteProto
	       10 - ipRouteAge
	
PARAMETERS:
	OIDC_T		Last component of the object id leading to 
			the leaf node in the MIB.  This is usually
			the identifier for the particular attribute
			in the table.
	int		Number of components in the unused part of the
			object identifier
	OIDC_T *	Unused part of the object identifier
	char *		User's cookie, passed unchanged from the LEAF macro
			in the mib.c
	INT_32_T	New value to be set.

RETURNS:  None -- void procedure.
****************************************************************************/
/*ARGSUSED*/
/*lint -e715	*/
void
  ip_routetable_setint(OIDC_T	 last_match,
		       int	 tcount,
		       OIDC_T  	*tlist,
		       char	*cookie,
		       INT_32_T	 value)
{
switch(last_match)
   {
   case 2:	/* ipRouteIfIndex */
   case 3:	/* ipRouteMetric1 */
   case 4:	/* ipRouteMetric2 */
   case 5:	/* ipRouteMetric3 */
   case 6:	/* ipRouteMetric4 */
   case 8:	/* ipRouteType */
   case 10:	/* ipRouteAge */
	/* ***>>> DO SOMETHING <<<*** */ ;
   }
}
/*lint +e715	*/

/****************************************************************************
NAME:  ip_routetable_setipaddr

PURPOSE:  Alter an IpAddress type parameter within the ip routing table.
	  The IpAddress parameters in this table (and their lastmatch value)
	  are:
		1 - ipRouteDest
		7 - ipRouteNextHop

PARAMETERS:
	OIDC_T		Last component of the object id leading to 
			the leaf node in the MIB.  This is usually
			the identifier for the particular attribute
			in the table.
	int		Number of components in the unused part of the
			object identifier
	OIDC_T *	Unused part of the object identifier
	char *		User's cookie, passed unchanged from the LEAF macro
			in the mib.c
	char *		Pointer to the new value to be assigned.
	int		Length of the new value at the above pointer.

RETURNS:  None -- void procedure.
****************************************************************************/
/*ARGSUSED*/
/*lint -e715	*/
void
  ip_routetable_setipaddr(OIDC_T  last_match,
			  int	  tcount,
			  OIDC_T *tlist,
			  char	 *cookie,
			  char	 *value,
			  int	 length)
{
if (length != 4)
    return;	/* wrong length */

switch(last_match)
   {
   case 1:	/* ipRouteDest */
   case 7:	/* ipRouteNextHop */
	/* ***>>> DO SOMETHING <<<*** */ ;
   }
}

void
  ip_addrtable_test_async(OIDC_T	 lastmatch,
			  int		 tcount,
			  OIDC_T	*tlist,
			  SNMP_PKT_T	*pktp,
			  VB_T		*vbp)
{
/* There must be exactly 4 unused component */
if (tcount != 4)
    testproc_error(pktp, vbp, NO_CREATION);
else
    testproc_good(pktp, vbp);
}

void
  ip_routetable_test_async(OIDC_T	 lastmatch,
			   int		 tcount,
			   OIDC_T	*tlist,
			   SNMP_PKT_T	*pktp,
			   VB_T		*vbp)
{
/* There must be exactly 4 unused component */
if (tcount != 4)
    testproc_error(pktp, vbp, NO_CREATION);
else
    testproc_good(pktp, vbp);
}

void
  ip_addrtable_get_async(OIDC_T		 lastmatch,
			 int		 tcount,
			 OIDC_T		*tlist,
			 SNMP_PKT_T	*pktp,
			 VB_T		*vbp)
{
/* There must be exactly 4 unused component */
if (tcount != 4) {
    getproc_nosuchins(pktp, vbp);
    return;
    }

switch(lastmatch) {
    case 2:	/* ipadentifindex */
    case 4:	/* ipadentbcastaddr */
	getproc_got_int32(pktp, vbp, *(INT_32_T *)(VB_TO_COOKIE(vbp)));
	break;
    case 1:	/* ipadentaddr */
    case 3:	/* ipadentnetmask */
	getproc_got_ip_address(pktp, vbp, *(UINT_32_T *)(VB_TO_COOKIE(vbp)));
	break;
    }
}

void
  ip_routetable_get_async(OIDC_T	 lastmatch,
			  int		 tcount,
			  OIDC_T	*tlist,
			  SNMP_PKT_T	*pktp,
			  VB_T		*vbp)
{
/* There must be exactly 4 unused component */
if (tcount != 4) {
    getproc_nosuchins(pktp, vbp);
    return;
    }

switch(lastmatch) {
    case 2:	/* iprouteindex */
    case 3:	/* iproutemetric1 */
    case 4:	/* iproutemetric2 */
    case 5:	/* iproutemetric3 */
    case 6:	/* iproutemetric4 */
    case 8:	/* iproutetype */
    case 9:	/* iprouteproto */
    case 10:	/* iprouteage */
	getproc_got_int32(pktp, vbp, *(INT_32_T *)(VB_TO_COOKIE(vbp)));
	break;
   case 1:	/* iproutedest */
   case 7:	/* iproutenexthop */
	getproc_got_ip_address(pktp, vbp, *(UINT_32_T *)(VB_TO_COOKIE(vbp)));
	break;
    }
}

/*lint +e715	*/