indx_vbp.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 1991-1997 Epilogue Technology Corporation.
 *  Copyright 1998 Integrated Systems, Inc.
 *  All rights reserved.
 */

/*
 * $Log: indx_vbp.c,v $
 * Revision 1.2  2001/11/06 21:20:13  josh
 * revised new path hacking
 *
 * Revision 1.1.1.1  2001/11/05 17:47:39  tneale
 * Tornado shuffle
 *
 * Revision 9.2  2001/01/19 22:21:54  paul
 * Update copyright.
 *
 * Revision 9.1  2000/03/17 00:17:30  meister
 * Update copyright message
 *
 * Revision 9.0  1998/10/16 22:08:56  sar
 * Update version stamp to match release
 *
 * Revision 8.2  1998/06/05 18:52:50  sra
 * "#include <foo.h>" => "#include <envoy/h/foo.h>".
 *
 * Revision 8.1  1998/02/25 04:49:30  sra
 * Update copyrights.
 *
 * Revision 8.0  1997/11/18 00:56:05  sar
 * Updated revision to 8.0
 *
 * Revision 7.2  1997/03/20 06:50:04  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  1996/03/15 22:21:24  sar
 * Updated revision to 7.0 and copyright to 96
 *
 * Revision 6.1  1996/01/05  19:02:18  sar
 * Removed no_pp style definitions as well as unnecessary include files
 *
 * Revision 6.0  1995/05/31  21:50:45  sra
 * Release 6.0.
 *
 * Revision 5.0  1994/05/16  15:29:57  sar
 * Updated revision to 5.0 and copyright to 1994
 *
 * Revision 4.0  1993/06/24  15:58:43  sar
 * Updated rev to 4.0 and copyright to 93
 *
 * Revision 3.2  1993/06/02  23:07:24  dab
 * Changed #ifdef's to #if's for things from install.h
 *
 * Revision 3.1  1993/04/26  20:22:55  sar
 * Added ifdefs to allow clean version 1 or version 2 makes.
 *
 * Revision 3.0  1992/04/03  19:53:01  dab
 * Release 3.0
 *
 * Revision 1.2  91/10/30  20:38:33  dab
 * Directly include asn1conf.h and snmpdefs.h.
 * 
 * Revision 1.1  91/10/24  11:07:51  dab
 * Initial revision
 * 
 */

/* [clearcase]
modification history
-------------------
01b,18apr05,job  update copyright notices
01a,24nov03,job  update copyright information
*/

#include <wrn/wm/snmp/engine/asn1conf.h>
#include <wrn/wm/snmp/engine/asn1.h>
#include <wrn/wm/snmp/engine/snmpdefs.h>
#include <wrn/wm/snmp/engine/snmp.h>
#include <wrn/wm/snmp/engine/mib.h>
#include <wrn/wm/snmp/engine/auxfuncs.h>

/****************************************************************************
NAME:  index_to_vbp

PURPOSE:  Given a packet structure and the zero-based index of a varBind
	  element in that packet, return a pointer to that VB_T

PARAMETERS:
	  SNMP_PKT_T *	The whole packet.
	  int		The index of the VB_T desired.
			(0 is the index of the first VB_T).

RETURNS:  VB_T *	The address of the desired varBind element
			(VB_T *)0 returned if out of range.
****************************************************************************/
VB_T *
  index_to_vbp(SNMP_PKT_T *pktp,
	       int	   vb_index)
{
  VBL_T *vblp;

#if INSTALL_ENVOY_SNMP_VERSION_1
  if (pktp->pdu_type == TRAP_PDU)
    vblp = &(pktp->pdu.trap_pdu.trap_vbl);  
  else
#endif
    vblp = &(pktp->pdu.std_pdu.std_vbl);

  if (vb_index < vblp->vbl_count)
    return &(vblp->vblist[vb_index]);
  else
    return(0);
}