v3mt_con.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 1998 Integrated Systems, Inc.
 *  All rights reserved.
 */

/*
 * $Log: v3mt_con.c,v $
 * Revision 1.2  2001/11/06 21:20:33  josh
 * revised new path hacking
 *
 * Revision 1.1.1.1  2001/11/05 17:47:40  tneale
 * Tornado shuffle
 *
 * Revision 9.2  2001/01/19 22:22:00  paul
 * Update copyright.
 *
 * Revision 9.1  2000/03/17 00:17:48  meister
 * Update copyright message
 *
 * Revision 9.0  1998/10/16 22:09:57  sar
 * Update version stamp to match release
 *
 * Revision 1.7  1998/09/04 15:11:07  sar
 * Added some casts to try and keep the msc compiler happy and not
 * complaining about signed/unsigned mismatches.
 *
 * Revision 1.6  1998/07/20 02:09:06  sar
 * If we have an exact match when doing a next step to the next
 * entry.
 *
 * Revision 1.5  1998/06/19 20:18:57  sar
 * Make all files include asn1conf.h and snmp.h to make sure we get the
 * common code
 *
 * Revision 1.4  1998/06/09 16:43:55  sar
 * Moved some context routines to snmp so that they are in the core code
 * and can be used by the rest of the core.  Also renamed the routines
 * to keep them separate from usec.
 *
 * Revision 1.3  1998/05/30 03:07:33  sar
 * Updated names used for max lengths of strings for clarity
 * Update user_lookup
 *
 * Revision 1.2  1998/05/23 20:32:05  sar
 * Correct copyright statement
 *
 * Revision 1.1  1998/05/22 19:47:02  sar
 * Method routines for use with snmp v3 tables.  The tables are:
 * access, group, context, user and views.
 *
 */

/* [clearcase]
modification history
-------------------
01b,18apr05,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/vbdefs.h>
#include <wrn/wm/snmp/engine/snmpdefs.h>
#include <wrn/wm/snmp/engine/v3_con.h>
#include <wrn/wm/snmp/engine/auxfuncs.h>


/****************************************************************************
NAME: contexttable_get

PURPOSE:  method routine to find a context object

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
	SNMP_PKT_T *	SNMP packet currently being processed.
	VB_T *		Variable being processed.

RETURNS: void

****************************************************************************/
void
  contexttable_get(OIDC_T      lastmatch,
		   int         tcount,
		   OIDC_T     *tlist,
		   SNMP_PKT_T *pktp,
		   VB_T       *vbp)
{
SNMP_CONTEXT_T *con = 0;
bits8_t con_name[ETC_CONTEXT_MAX];
ALENGTH_T con_len = ETC_CONTEXT_MAX;

if ((oid_to_string(tcount, tlist, &con_len, con_name, 0) == 0) &&
    ((bits32_t)con_len == (bits32_t)(tcount - 1)))
    con = SNMP_V3_Context_Find(con_name, con_len);

if (con == 0)
    getproc_nosuchins(pktp, vbp);
else
    getproc_got_string(pktp, vbp, con->length, con->name, 0, VT_STRING);
return;
}

/****************************************************************************
NAME: contexttable_next

PURPOSE:  method routine to search out the next context and return
	  its name.  This routine contains knowledge about how the
	  context list is constructed, if list structure changes
	  this routine will need to be updated.

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
	SNMP_PKT_T *	SNMP packet currently being processed.
	VB_T *		Variable being processed.

RETURNS: void

****************************************************************************/
void
  contexttable_next(OIDC_T      lastmatch,
		    int         tcount,
		    OIDC_T     *tlist,
		    SNMP_PKT_T *pktp,
		    VB_T       *vbp)
{
SNMP_CONTEXT_T *con = 0;
ALENGTH_T con_len, req_len;
unsigned int i;

if (tcount == 0) {
    con = v3_context_root;
    }
else if (tlist[0] > ETC_CONTEXT_MAX) {
    nextproc_no_next(pktp, vbp);
    return;
    }
else {
    req_len = (ALENGTH_T)(*tlist++);
    tcount--;
    con_len = (ALENGTH_T)(min((bits32_t)req_len, (bits32_t)tcount));

    /* skip over any contexts that are shorter than what we want */
    for (con = v3_context_root;
	 con && (con->length < req_len);
	 con = con->next)
        ; /* no body for for loop */

    for (; con && (con->length == req_len); con = con->next) {
        for(i = 0; (i < con_len) && (con->name[i] == tlist[i]); i++)
	    ; /* no body for for loop */
	if (i == con_len) {
	    if (con_len == req_len)
	        con = con->next;
	    break;
	    }
	if (con->name[i] > tlist[i])
	    break;
        }
    }

if (con == 0)
    nextproc_no_next(pktp, vbp);
else {
    nextproc_next_instance_string(pktp, vbp, con->length, con->name, 0);
    getproc_got_string(pktp, vbp, con->length, con->name, 0, VT_STRING);
    }

return;
}