valcomm.c

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

/* $Header: /usr/cvsroot/target/src/wrn/wm/demo/winagent/valcomm.c,v 1.2 2001/11/09 21:29:37 josh Exp $ */

/*
 * Copyright (C) 1999-2005 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: valcomm.c,v $
 * Revision 1.2  2001/11/09 21:29:37  josh
 * winagent path retooling
 *
 * Revision 1.1.1.1  2001/11/05 17:49:18  tneale
 * Tornado shuffle
 *
 * Revision 1.8  2001/01/19 22:25:11  paul
 * Update copyright.
 *
 * Revision 1.7  2000/03/17 00:15:52  meister
 * Update copyright message
 *
 * Revision 1.6  1998/10/08 19:33:50  paul
 * don't assume RFC1445 views
 *
 * Revision 1.5  1998/02/25 04:58:33  sra
 * Update copyrights.
 *
 * Revision 1.4  1997/03/20 06:53:39  sra
 * DFARS-safe copyright text.  Zap!
 *
 * Revision 1.3  1997/02/25 16:34:43  mrf
 * Added RCS log and copyright notice
 *
 */

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



/*---------------------------------------------------------
  VALCOMM.C () --
  		Contains a rudimentary SNMP_validate_community user
		exit routine called validate_SNMP_community.
  ---------------------------------------------------------*/

#include "wsagent.h"

#include <sys\types.h>
#include <wrn/wm/snmp/engine/snmp.h>
#include <wrn/wm/snmp/engine/snmpdefs.h>

/* define community names.  should be user configurable */
char Get_Community[] = "public";
char Set_Community[] = "private";

/*---------------------------------------------------------
  
  validate_SNMP_community() --

		This function checks the community string and returns
		0 if is valid, 1 if it is not.  This rudimentary
		version of an "SNMP_validate_community()" function
		only accepts two possible community strings:
		Get_Community for read access and Set_Community for
		read/write access.

  ---------------------------------------------------------*/
int validate_SNMP_community(SNMP_PKT_T *rp, SNMPADDR_T *pktsrc,
									SNMPADDR_T *pktdst)
{
	unsigned int	commlen;

	commlen = EBufferUsed(&(rp->community));

#if (DEBUG > 1)
	MsgBox (NULL,
			MB_OK,
			"Entering validate_community. commlen = %d",
			commlen);
#endif /* DEBUG > 1 */


/* initialize user information fields.  we don't use them. */
	rp->lcl_ident = 0;
	rp->user_private = (char *)0;
/*
 * copy over address information as originally passed into
 * Process_Rcvd_SNMP_Packet_Async() routine. this will later
 * get used by our I/O completion routine to send a response
 * packet.
 */
	(void)memcpy((char*)&(rp->pkt_src), (char*)pktsrc, sizeof(SNMPADDR_T));
	(void)memcpy((char*)&(rp->pkt_dst), (char*)pktdst, sizeof(SNMPADDR_T));
/*
 * set default mib view information. this won't ever get used if
 * we return an error because packet processing will stop.
 * mib_view is used for V1 views, view_index for V2, but it
 * can't hurt to just set both.
 */
	rp->mib_view = 0x10;
#if (INSTALL_ENVOY_SNMP_RFC1445_VIEWS)
	rp->view_index = 1;
#endif

/*
 * for get or getnext PDUs, check against both Get_Community and
 * Set_Community.  for set PDU, only check against Set_Community.
 */
 	if (rp->pdu_type != SET_REQUEST_PDU)
	{
		if ((strlen(Get_Community) == commlen) && (MEMCMP(Get_Community,
							rp->community.start_bp, commlen) == 0))
			return 0;
	}
	if ((strlen(Set_Community) == commlen) && (MEMCMP(Set_Community,
						rp->community.start_bp, commlen) == 0))
		return 0;

/* the community is not valid */
#if DEBUG
	MsgBox (NULL,
			MB_OK,
			"Invalid SNMP community string!");
#endif /* DEBUG */
return 1;
}