libfuncs.c

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

/* $Header: /usr/cvsroot/target/src/wrn/wm/demo/unxagent/sun/libfuncs.c,v 1.2 2001/11/09 21:49:02 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: libfuncs.c,v $
 * Revision 1.2  2001/11/09 21:49:02  josh
 * unxagent demo path adjustment, first pass
 *
 * Revision 1.1.1.1  2001/11/05 17:49:17  tneale
 * Tornado shuffle
 *
 * Revision 7.9  2001/01/19 22:25:02  paul
 * Update copyright.
 *
 * Revision 7.8  2000/03/17 00:15:26  meister
 * Update copyright message
 *
 * Revision 7.7  1998/06/23 22:07:30  sar
 * Add some include files to keep compilers happy
 *
 * Revision 7.6  1998/06/07 02:58:59  sar
 * Moved the validate routines to snark library
 * leaving proxy_send_rtn here
 *
 * Revision 7.5  1998/06/03 22:07:41  sar
 * add v3 validation routine
 *
 * Revision 7.4  1998/02/25 04:58:21  sra
 * Update copyrights.
 *
 * Revision 7.3  1997/03/20 06:54:12  sra
 * DFARS-safe copyright text.  Zap!
 *
 * Revision 7.2  1997/02/25 10:58:16  sra
 * Update copyright notice, dust under the bed.
 *
 * Revision 7.1  1997/01/08 23:01:49  sar
 * Updated copyright and modified include files to use envoy/h as
 * appropriate
 *
 * Revision 7.0  1996/03/15  22:07:57  sar
 * Updated revision to 7.0 and copyright to 96
 *
 * Revision 6.3  1996/01/23  16:25:06  sar
 * Changed the install view option to install rfc1445 views
 *
 * Revision 6.2  1995/11/14  22:46:31  sar
 * Added proxy handling code.
 *
 * Revision 6.1  1995/11/01  01:03:00  sar
 * changed memcpy to MEMCPY
 * removed casts of 0
 * removed validate_address
 *
 * Revision 6.0  1995/05/31  21:49:35  sra
 * Release 6.0.
 *
 * Revision 5.1  1995/03/21  19:37:43  sar
 * Updated method routines to use new api & scheme
 *
 * Revision 5.0  1994/05/16  16:20:43  sar
 * Updated revision to 5.0 and copyright to include 1994
 *
 * Revision 4.1  1994/05/04  22:33:56  sar
 * while validating the snmp_community we now set the view_index to 1
 * for use with the sub agent and use_v2_views options.
 *
 * Revision 4.0  1993/06/24  17:31:48  sar
 * Updated rev to 4.0 copyright to 93
 * and made the if defined(install..) checks be if install
 *
 * Revision 3.7  1993/05/14  15:11:42  sar
 * renamed private field in packet structure to be user_private
 *
 * Revision 3.6  1993/05/13  22:22:28  sar
 * Added some defines, includes (<sysent.h> <errno.h> <libc.h>), casts
 * (struct sockaddr *) and changed memfoo to MEMFOO and objidcmp to
 * llist_cmp to get rid of warnings from the compiler.
 *
 * Revision 3.5  1993/04/26  20:20:12  sar
 * Added ifdefs to allow clean version 1 and version 2 makes.
 *
 * Revision 3.4  1993/04/22  20:23:42  sar
 * Updated macros and defines to use the naming scheme.
 * For example we now use INSTALL_ENVOY_SNMP_VERSION_1 or _2.
 *
 * Revision 3.3  1993/02/18  20:29:44  sar
 * Updated check on SGRP to be either a check on SGRPv1 or (SGRPv1 || SGRPv2)
 *
 * Revision 3.2  1993/02/17  20:42:20  sar
 * Added validate_SNMP_address.  Currently this function copies the
 * source and dest addresses into the received packet.  Eventually it
 * should check that the addresses match those in the parties being used.
 *
 * Revision 3.1  92/09/01  11:37:56  dab
 * Fixed up for Mach386
 * 
 * Revision 3.0  92/04/03  19:53:44  dab
 * Release 3.0
 * 
 * Revision 2.101  92/02/04  10:46:51  dab
 * Updated for release 3.0 of SNMP.
 * 
 * Revision 2.100  92/02/03  16:46:12  dab
 * Generic unix SNMP agent.
 * 
 * 
 *    Rev 2.0   31 Mar 1990 15:34:12
 * Initial revision.
 * 
 *    Rev 1.6   27 Apr 1989 15:56:36
 * Removed unused variables
 * 
 *    Rev 1.5   17 Mar 1989 22:50:16
 * Memory allocation now fails if an attempt is made to allocate zero bytes.
 * 
 *    Rev 1.4   17 Mar 1989 21:41:38
 * Calls to memcpy/memset protected against zero lengths
 * 
 *    Rev 1.3   11 Jan 1989 13:24:32
 * 
 *    Rev 1.2   10 Oct 1988 21:49:36
 * Source reorganization
 * 
 *    Rev 1.1   14 Sep 1988 17:57:10
 * Moved includes of system include files into libfuncs.h.
 * 
 *    Rev 1.0   12 Sep 1988 10:47:00
 * Initial revision.
*/

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



#if defined(MEM_TRACE)
#include <stdio.h>
#endif

#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

#include <wrn/wm/snmp/engine/asn1.h>
#include <wrn/wm/snmp/engine/snmp.h>
#include <wrn/wm/snmp/engine/snmpstat.h>
#include <wrn/wm/snmp/engine/auxfuncs.h>
#include <wrn/wm/snmp/engine/proxy_tr.h>
#include "snmpvars.h"

#include <wrn/wm/demo/snmpfunc.h>

void gen_auth_fail_trap   __((void));
extern void send_traps    __((int, int));
extern int name_to_ulong  __((char *tname, u_long *tlong));

/****************************************************************************
 This module contains user provided/modifiable procedures.
****************************************************************************/

#if (INSTALL_ENVOY_SNMP_PROXY)
/****************************************************************************
NAME:  proxy_send_rtn

PURPOSE:  Routine to attempt to transmit a byte string for proxies

PARAMETERS:
	EBUFFER_T *	The buffer to send
	ptr_t		Information as to where to send the buffer.

RETURNS: sbits32_t	A reasonable timeout period for this transport
	 
****************************************************************************/

sbits32_t
  proxy_send_rtn(EBUFFER_T   *ebuf,
		 ptr_t	     cookie)
{
struct sockaddr_in to;
TRANS_STUFF_T *tstuff = (TRANS_STUFF_T *)cookie;

to.sin_family = AF_INET;
to.sin_port = htons(tstuff->port);
if (name_to_ulong(tstuff->addr_str, &(to.sin_addr.s_addr)))
    return(0);

/* snmp_socket is a global varialbe for the socket we receive/transmit on */
 (void)sendto(snmp_socket, ebuf->start_bp, EBufferUsed(ebuf), 0,
	      (struct sockaddr *)&to, sizeof(to));
return(100);
}

#endif /* (INSTALL_ENVOY_SNMP_PROXY) */

/**********************************************************************
 gen_auth_fail_trap -- Issue an authentication failure trap.
 **********************************************************************/
void
  gen_auth_fail_trap()
{
if (snmp_auth_traps == 0) 
    return;

send_traps(snmp_socket, AUTH_FAILURE);
}

/****************************************************************************
NAME:  get_snmpEnableAuthTraps

PURPOSE:  Assign the info about authentication traps to the vb.

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

****************************************************************************/
/*ARGSUSED*/
void
  get_snmpEnableAuthTraps(OIDC_T	 last_match,
			  int		 tcount,
			  OIDC_T	*tlist,
			  SNMP_PKT_T	*pktp,
			  VB_T		*vbp)
{
/* test that the instance information is correct,
   we should have a sinlge oid of value 0 */
if ((tcount != 1) || (*tlist != 0))
    getproc_nosuchins(pktp, vbp);
else
    getproc_got_int32(pktp, vbp, (INT_32_T)(snmp_auth_traps ? 1 : 2));
return;
}

/****************************************************************************
NAME:  set_snmpEnableAuthTraps

PURPOSE:  Set the value for the enable auth trap 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

****************************************************************************/
/*ARGSUSED*/
void
  set_snmpEnableAuthTraps(OIDC_T	 last_match,
			  int		 tcount,
			  OIDC_T	*tlist,
			  SNMP_PKT_T	*pktp,
			  VB_T		*vbp)
{
if (vbp->value_u.v_number == 1)
    snmp_auth_traps = 1;
else
    snmp_auth_traps = 0;
setproc_good(pktp, vbp);
return;
}

/****************************************************************************
NAME:  test_snmpEnableAuthTraps

PURPOSE:  Determine if the instance and value inforamtion are acceptable
	  (for setting enable authentication traps).

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

****************************************************************************/
/*ARGSUSED*/
void
  test_snmpEnableAuthTraps(OIDC_T	 last_match,
			   int		 tcount,
			   OIDC_T	*tlist,
			   SNMP_PKT_T	*pktp,
			   VB_T		*vbp)
{
/* test the value we are being asked to set */
if ((vbp->value_u.v_number != 1) && (vbp->value_u.v_number != 2)) {
    testproc_error(pktp, vbp, WRONG_VALUE);
    return;
    }

/* test that the instance information is correct,
   we should have a sinlge oid of value 0 */
if ((tcount != 1) || (*tlist != 0)) {
    testproc_error(pktp, vbp, NO_CREATION);
    return;
    }

testproc_good(pktp, vbp);
return;
}

int
  libfuncs_init()
{
return 0;
}

/****************************************************************************
NAME:  get_async_cookie

PURPOSE:  Get the int32 that has been stashed into the cookie field.
	  This tests the instance information and is useful for
	  scalar objects (instance has 1 subid of value 0).

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

****************************************************************************/
/*ARGSUSED*/
void
  get_async_cookie(OIDC_T	 last_match,
		   int		 tcount,
		   OIDC_T	*tlist,
		   SNMP_PKT_T	*pktp,
		   VB_T		*vbp)
{
/* test that the instance information is correct,
   we should have a sinlge oid of value 0 */
if ((tcount != 1) || (*tlist != 0))
    getproc_nosuchins(pktp, vbp);
else
    getproc_got_int32(pktp, vbp, (INT_32_T)(VB_TO_COOKIE(vbp)));
return;
}