//==========================================================================
//
//      ./lib/current/include/snmp_client.h
//
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under    
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// version.                                                                 
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// for more details.                                                        
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// As a special exception, if other files instantiate templates or use      
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// ####ECOSGPLCOPYRIGHTEND####                                              
//####UCDSNMPCOPYRIGHTBEGIN####
//
// -------------------------------------------
//
// Portions of this software may have been derived from the UCD-SNMP
// project,  <http://ucd-snmp.ucdavis.edu/>  from the University of
// California at Davis, which was originally based on the Carnegie Mellon
// University SNMP implementation.  Portions of this software are therefore
// covered by the appropriate copyright disclaimers included herein.
//
// The release used was version 4.1.2 of May 2000.  "ucd-snmp-4.1.2"
// -------------------------------------------
//
//####UCDSNMPCOPYRIGHTEND####
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    hmt
// Contributors: hmt
// Date:         2000-05-30
// Purpose:      Port of UCD-SNMP distribution to eCos.
// Description:  
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================
/********************************************************************
       Copyright 1989, 1991, 1992 by Carnegie Mellon University

			  Derivative Work -
Copyright 1996, 1998, 1999, 2000 The Regents of the University of California

			 All Rights Reserved

Permission to use, copy, modify and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appears in all copies and
that both that copyright notice and this permission notice appear in
supporting documentation, and that the name of CMU and The Regents of
the University of California not be used in advertising or publicity
pertaining to distribution of the software without specific written
permission.

CMU AND THE REGENTS OF THE UNIVERSITY OF CALIFORNIA DISCLAIM ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL CMU OR
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY SPECIAL,
INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
FROM THE LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*********************************************************************/
/*
 * snmp_client.h
 */
/***********************************************************
	Copyright 1988, 1989 by Carnegie Mellon University

                      All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of CMU not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
******************************************************************/
 
#ifndef SNMP_CLIENT_H
#define SNMP_CLIENT_H

#ifdef __cplusplus
extern "C" {
#endif


struct snmp_pdu;
struct snmp_session;
struct variable_list;

struct synch_state {
    int	waiting;
    int status;
/* status codes */
#define STAT_SUCCESS	0
#define STAT_ERROR	1
#define STAT_TIMEOUT 2
    int reqid;
    struct snmp_pdu *pdu;
};

int snmp_set_var_value(struct variable_list *, u_char *, size_t);
int snmp_set_var_objid (struct variable_list *vp,
                    const oid *objid, size_t name_length);
struct variable_list* snmp_add_null_var (struct snmp_pdu *, oid *, size_t);
struct snmp_pdu	*snmp_pdu_create (int);
struct snmp_pdu *snmp_fix_pdu (struct snmp_pdu *, int);
struct snmp_pdu *snmp_clone_pdu (struct snmp_pdu *);
struct snmp_pdu *snmp_split_pdu (struct snmp_pdu *, int skipCount,
                                 int copyCount);

unsigned long snmp_varbind_len(struct snmp_pdu * pdu);
int snmp_clone_var(struct variable_list *, struct variable_list *);
const char *snmp_errstring (int);
int snmp_synch_response (struct snmp_session *, struct snmp_pdu *, struct snmp_pdu **);
int snmp_synch_response_cb (struct snmp_session *, struct snmp_pdu *, struct snmp_pdu **, snmp_callback);
int snmp_clone_mem(void **, void *, unsigned);

/* single session API - see snmp_api.h for full details */
int snmp_sess_synch_response (void *, struct snmp_pdu *, struct snmp_pdu **);
 
#ifdef __cplusplus
}
#endif

#endif /* SNMP_CLIENT_H */
