row_get.c

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

/* row_get.c - row_get.c routines */

/*
 *  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 1996-1997 Epilogue Technology Corporation.
 *  Copyright 1998 Integrated Systems, Inc.
 *  All rights reserved.
 */

/*
 * $Log: row_get.c,v $
 * Revision 1.2  2001/11/06 21:20:21  josh
 * revised new path hacking
 *
 * Revision 1.1.1.1  2001/11/05 17:47:40  tneale
 * Tornado shuffle
 *
 * Revision 9.3  2001/01/19 22:21:58  paul
 * Update copyright.
 *
 * Revision 9.2  2000/03/17 00:17:42  meister
 * Update copyright message
 *
 * Revision 9.1  1999/05/24 20:12:06  josh
 * 'compc' and 'compl' have been replaced by 'tcount' and 'tlist'
 * to avoid C++ compiler errors.
 *
 * Revision 9.0  1998/10/16 22:09:38  sar
 * Update version stamp to match release
 *
 * Revision 8.3  1998/06/08 20:02:22  sar
 * Modify var bind check to make sure we have a leaf and to check
 * all of the flags before the oid compare
 *
 * Revision 8.2  1998/06/05 18:52:57  sra
 * "#include <foo.h>" => "#include <envoy/h/foo.h>".
 *
 * Revision 8.1  1998/02/25 04:49:59  sra
 * Update copyrights.
 *
 * Revision 8.0  1997/11/18 00:56:13  sar
 * Updated revision to 8.0
 *
 * Revision 7.2  1997/03/20 06:50:21  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 1.1  1996/01/05  18:58:29  sar
 * Initial revision
 *
 *
 */

/* [clearcase]
modification history
-------------------
01d,12may05,job  fix apigen comments
01c,18apr05,job  update copyright notices
01b,16feb05,job  apigen for documented APIs
01a,24nov03,job  update copyright information
*/

/*
DESCRIPTION
This library contains row_get.c routines.

INCLUDE FILES: snmp.h
*/

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

/*******************************************************************************
*
* group_by_getproc_and_instance - group similar 'VarBinds'
* SYNOPSIS
*
* \cs
* void group_by_getproc_and_instance
*     ( 
*     SNMP_PKT_T *  pktp, 
*     VB_T       *  first_vbp, 
*     int           tcount, 
*     OIDC_T     *  tlist 
*     )
* \ce
*
* DESCRIPTION
*
* This routine groups similar 'VarBinds'. Starting at <first_vbp>, it searches 
* the packet for any 'VarBinds' that match the 'getproc' pointer of <first_vbp> 
* and have an instance of <tcount> and <tlist> and it links all the 'VarBinds' 
* that match this criteria.
*
* \&NOTE: This routine does not set any flags in the 'VarBinds'. Your calling 
* routine must set the tested or set flags.
*
* PARAMETERS
* \is
* \i <*pktp>
* Specify a packet.
* \i <*first_vbp>
* Specify the first 'VarBind' entry to use. If this value is 0, there are no 
* more 'VarBinds'.
* \i <tcount>
* Specify the component count of the object identifier of the 'VarBind'.
* \i <*tlist>
* Specify the components of the object identifier of the 'VarBind'.
* \ie
*
* RETURNS: None.
*
* ERRNO: N/A
*
* SEE ALSO: vb_extract_row(), vb_extract_row()
*/
void
  group_by_getproc_and_instance(SNMP_PKT_T *pktp,
				VB_T       *first_vbp,
				int         tcount,
				OIDC_T     *tlist)
{
  VBL_T *vblp;
  VB_T  *last_vbp;
  VB_T  *vbp;
  VB_T  *list;
  
#if INSTALL_ENVOY_SNMP_VERSION_1
  if (pktp->pdu_type == TRAP_PDU)
    vblp = &(pktp->pdu.trap_pdu.trap_vbl);  
  else
#endif
    /* find the last vblp, which is always the one we are working on */
    for (vblp = &(pktp->pdu.std_pdu.std_vbl); vblp->vblp; vblp = vblp->vblp)
      ;      

  list = first_vbp;
  list->vb_link = 0;
  for (last_vbp = &vblp->vblist[vblp->vbl_count], vbp = first_vbp + 1;
       vbp < last_vbp; vbp++) {
    /* find varbinds with the same getproc which aren't already in use */
    if (vbp->vb_ml.ml_leaf &&
	((vbp->vb_flags & (VFLAG_SET_STARTED | VFLAG_SET_DONE |
			   VFLAG_TEST_STARTED | VFLAG_TEST_DONE)) == 0) &&
	(vbp->vb_ml.ml_leaf->getproc == first_vbp->vb_ml.ml_leaf->getproc) &&
	(oidcmp2(tcount, tlist, vbp->vb_ml.ml_remaining_objid.num_components,
		 vbp->vb_ml.ml_remaining_objid.component_list) == 0)) {
      /* link onto the list */
      list->vb_link = vbp;
      list = vbp;
      vbp->vb_link = 0;
    }
  }
}