tcptable.c

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

/*
 *  Copyright 2000-2005 Wind River Systems, Inc.
 *  All rights reserved.  Provided under license only.
 *  Distribution or other use of this software is only
 *  permitted pursuant to the terms of a license agreement
 *  from Wind River Systems (and is otherwise prohibited).
 *  Refer to that license agreement for terms of use.
 */

/*
 *  Copyright 1988-1997 Epilogue Technology Corporation.
 *  Copyright 1998 Integrated Systems, Inc.
 *  All rights reserved.
 */

/*
 * $Log: tcptable.c,v $
 * Revision 1.2  2001/11/06 21:20:38  josh
 * revised new path hacking
 *
 * Revision 1.1.1.1  2001/11/05 17:47:45  tneale
 * Tornado shuffle
 *
 * Revision 9.2  2000/03/17 00:19:54  meister
 * Update copyright message
 *
 * Revision 9.1  1999/05/24 20:12:23  josh
 * 'compc' and 'compl' have been replaced by 'tcount' and 'tlist'
 * to avoid C++ compiler errors.
 *
 * Revision 9.0  1998/10/16 22:12:58  sar
 * Update version stamp to match release
 *
 * Revision 8.2  1998/06/05 18:53:32  sra
 * "#include <foo.h>" => "#include <envoy/h/foo.h>".
 *
 * Revision 8.1  1998/02/25 04:53:32  sra
 * Update copyrights.
 *
 * Revision 8.0  1997/11/18 00:57:13  sar
 * Updated revision to 8.0
 *
 * Revision 7.2  1997/03/20 06:49:43  sra
 * DFARS-safe copyright text.  Zap!
 *
 * Revision 7.1  1997/02/25 10:49:26  sra
 * Update copyright notice, dust under the bed.
 *
 * Revision 7.0  1996/03/18 20:24:05  sar
 * Updated rev to 7.0 and copyright to 96
 *
 * Revision 6.1  1995/11/01  00:38:58  sar
 * removed localio.h, buffer.h and decode.h
 * added pp style argument lists
 *
 * Revision 6.0  1995/05/31  21:49:28  sra
 * Release 6.0.
 *
 * Revision 5.1  1995/05/05  23:06:58  sar
 * Added new routines using the async method routine api.
 *
 * Revision 5.0  1994/05/16  17:21:18  sar
 * Updated revision to 5.0 and copyright to include 1994
 *
 * Revision 4.0  1993/06/24  17:53:56  sar
 * Updated rev to 4.0 and copyright to 93
 *
 * Revision 3.0  1992/04/03  19:54:08  dab
 * Release 3.0
 *
 * Revision 1.1  92/03/31  16:43:44  dab
 * Initial revision
 * 
 * 
 *    Rev 2.0   31 Mar 1990 15:14:36
 * Release 2.00
 * 
 *    Rev 1.2   14 Dec 1989 16:01:02
 * Added support for Borland Turbo C compiler
 * 
 *    Rev 1.1   27 Apr 1989 15:56:20
 * Removed unused variables
 * 
 *    Rev 1.0   10 Oct 1988 21:48:50
 * Initial revision.
*/

/* [clearcase]
modification history
-------------------
01b,19apr05,job  update copyright notices
01a,24nov03,job  update copyright information
*/

#include <wrn/wm/snmp/engine/asn1.h>
#include <wrn/wm/snmp/engine/snmp.h>
#include <wrn/wm/snmp/engine/mib.h>

#include "snmpvars.h"	/* for local definitions */

/****************************************************************************
     THIS MODULE CONTAINS ROUTINES TO ACCESS TCP CONNECTION TABLE
****************************************************************************/

/****************************************************************************
 TCP CONNECTION TABLE ACCESS ROUTINES

 The instance, given by parameters "tcount" and "tlist" consists of
 ten object id components, a.b.c.d.e.f.g.h.i.j, of which a.b.c.d
 is the source IP address, e is the source port number, f.g.h.i
 is the destination IP address, and j is the destination port number.
****************************************************************************/

/****************************************************************************
NAME:  tcptable_test

PURPOSE:  Test whether a given object exists in the TCP connection table

PARAMETERS:
	int		TEST_SET or TEST_GET indicating what type of
			access is intended.
	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		0 if the attribute is accessable.
			-1 if the attribute is not accessable.
****************************************************************************/
/*ARGSUSED*/
/*lint -e715	*/
int
  tcptable_test(int	form,	/* See TEST_SET & TEST_GET in mib.h	*/
		OIDC_T	last_match, /* Last component matched */
		int	tcount,
		OIDC_T *tlist,
		char   *cookie)
{
/* There must be exactly 10 unused components */
if (tcount != 10) 
    return -1;

return 0;
}
/*lint +e715	*/

/****************************************************************************
NAME:  tcptable_next

PURPOSE:  Locate the "next" object in the TCP connection 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 - tcpConnState
				2 - tcpConnLocalAddress
				3 - tcpConnLocalPort
				4 - tcpConnRemAddress
				5 - tcpConnRemPort

	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 routine'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
  tcptable_next(OIDC_T	last_match, /* Last component matched */
		int	tcount,
		OIDC_T	*tlist,
		OIDC_T	*rlist,
		char	*cookie)
{
return 0;
}
/*lint +e715	*/

/****************************************************************************
NAME:  tcptable_getint

PURPOSE:  Obtain an Integer type parameter from the TCP connection table.
	  The integer parameters in this table (and their lastmatch value)
	  are:
		1 - tcpConnState
		3 - tcpConnLocalPort
		5 - tcpConnRemPort
	
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
  tcptable_getint(OIDC_T  last_match,
		  int	  tcount,
		  OIDC_T *tlist,
		  char	 *cookie)
{
switch(last_match)
   {
   case 1:	/* tcpConnState */
   case 3:	/* tcpConnLocalPort */
   case 5:	/* tcpConnRemPort */
	return (INT_32_T)*((int *)cookie);	/* TEMPORARY */
   	}

return 0;
}
/*lint +e715	*/

/****************************************************************************
NAME:  tcptable_getipaddr

PURPOSE:  Obtain an IpAddress type parameter from the TCP connection table.
	  The IpAddress parameters in this table (and their lastmatch value)
	  are:
		2 - tcpConnLocalAddress
		4 - tcpConnRemAddress
	
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
			address is found.  The address bytes must be in
			standard network order.
****************************************************************************/
/*ARGSUSED*/
/*lint -e715	*/
OCTET_T *
  tcptable_getipaddr(OIDC_T  last_match,
		     int     tcount,
		     OIDC_T *tlist,
		     char   *cookie)
{
switch(last_match)
   {
   case 2:	/* tcpConnLocalAddress */
   case 4:	/* tcpConnRemAddress */
        return (OCTET_T *)cookie;	/* TEMPORARY */
   	}
return (OCTET_T *)cookie;
}

void
  tcptable_test_async(OIDC_T		 lastmatch,
		      int		 tcount,
		      OIDC_T		*tlist,
		      SNMP_PKT_T	*pktp,
		      VB_T		*vbp)
{
/* There must be exactly 10 unused component */
if (tcount != 10)
    testproc_error(pktp, vbp, NO_CREATION);
else
    testproc_good(pktp, vbp);
}

void
  tcptable_get_async(OIDC_T	 lastmatch,
		    int		 tcount,
		    OIDC_T	*tlist,
		    SNMP_PKT_T	*pktp,
		    VB_T	*vbp)
{
/* There must be exactly 6 unused component */
if ((tcount != 6) || (tlist[1] != 1)) {
    getproc_nosuchins(pktp, vbp);
    return;
    }

switch(lastmatch) {
    case 1:	/* tcpconnstate */
    case 3:	/* tcpconnlocalport */
    case 5:	/* tcpconnremoteport */
	getproc_got_int32(pktp, vbp, *(INT_32_T *)(VB_TO_COOKIE(vbp)));
	break;
    case 2:	/* tcpconnlocaladdress */
    case 4:	/* tcpconnremoteaddress */
	getproc_got_ip_address(pktp, vbp, *(UINT_32_T *)(VB_TO_COOKIE(vbp)));
	break;
    }
}

/*lint +e715	*/