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/* -*-C++-*- */
#ifndef PDU_CLS_
#define PDU_CLS_
// ============================================================================
//
// = LIBRARY
// asnmp
//
// = FILENAME
// pdu.h
//
// = DESCRIPTION
// Pdu class definition. Encapsulation of an SMI Protocol
// Data Unit (PDU) aka Packet in C++.
//
// = AUTHOR
// Peter E Mellquist original code
// Michael MacFaden mrm@cisco.com ACE port, add iterator class for pdus
// ============================================================================
/*===================================================================
Copyright (c) 1996
Hewlett-Packard Company
ATTENTION: USE OF THIS SOFTWARE IS SUBJECT TO THE FOLLOWING TERMS.
Permission to use, copy, modify, distribute and/or sell this software
and/or its documentation is hereby granted without fee. User agrees
to display the above copyright notice and this license notice in all
copies of the software and any documentation of the software. User
agrees to assume all liability for the use of the software; Hewlett-Packard
makes no representations about the suitability of this software for any
purpose. It is provided "AS-IS without warranty of any kind,either express
or implied. User hereby grants a royalty-free license to any and all
derivatives based upon this software code base.
=====================================================================*/
// TODO: this needs to be moved into the CLASS and modifyable at runtime
// TODO: define an iterator object to traverse the vbs in a pdu
#define MAX_VBS 25
#include "asnmp/vb.h" // include Vb class definition
class ACE_Export Pdu
// = TITLE
// Protocol Data Unit (PDU) concrete class. An abstraction of the
// data packet used to by two SNMP sessions to communicate.
{
public:
Pdu( void);
// constructor no args
Pdu( Vb* pvbs, const int pvb_count);
// constructor with vbs and count
Pdu( const Pdu &pdu);
// constructor with another Pdu instance
~Pdu();
// destructor
Pdu& operator=( const Pdu &pdu);
// assignment to another Pdu object overloaded
Pdu& operator+=( Vb &vb);
// append a vb to the pdu
// TODO: add Pdu& operator-=(const Vb &vb);
int get_vblist( Vb* pvbs, const int pvb_count);
// extract all Vbs from Pdu
int set_vblist( Vb* pvbs, const int pvb_count);
// deposit all Vbs to Pdu
int get_vb( Vb &vb, const int index = 0) const;
// get a particular vb
// where 0 is the first vb
int set_vb( Vb &vb, const int index);
// set a particular vb
// where 0 is the first vb
int get_vb_count() const;
// return number of vbs
int get_error_status() const;
// return the error status
char *agent_error_reason();
// return the complete error info from this pdu
friend void set_error_status( Pdu *pdu, const int status);
// set the error status
int get_error_index() const;
// return the error index
friend void set_error_index( Pdu *pdu, const int index);
// set the error index
friend void clear_error_status( Pdu *pdu);
// clear error status
friend void clear_error_index( Pdu *pdu);
// clear error index
unsigned long get_request_id() const;
// return the request id
friend void set_request_id( Pdu *pdu, const unsigned long rid);
// set the request id
unsigned short get_type() const;
// get the pdu type
void set_type( unsigned short type);
// set the pdu type
int valid() const;
// returns validity of Pdu instance
int trim(const int count=1);
// trim off count vbs from the end of the vb list
int delete_vb( const int position);
// delete a Vb anywhere within the Pdu
void delete_all_vbs();
// delete_all vbs in pdu
void set_notify_timestamp( const TimeTicks & timestamp);
// set notify timestamp
void get_notify_timestamp( TimeTicks & timestamp) const;
// get notify timestamp
void set_notify_id( const Oid id);
// set the notify id
void get_notify_id( Oid &id) const;
// get the notify id
void set_notify_enterprise( const Oid &enterprise);
// set the notify enterprise
void get_notify_enterprise( Oid & enterprise) const;
// get the notify enterprise
char *to_string();
// return fomatted version of this object
protected:
Vb *vbs_[MAX_VBS];
// pointer to array of Vbs
int vb_count_;
// count of Vbs
int error_status_;
// SMI error status
int error_index_;
// SMI error index
int validity_;
// valid boolean status of object construction
unsigned long request_id_;
// SMI request id
unsigned short pdu_type_;
// derived at run time based on request type
TimeTicks notify_timestamp_;
// a timestamp associated with an infor
// for notify Pdu objects only
// traps & notifies
Oid notify_id_;
// an id
Oid notify_enterprise_;
private:
char *output_;
// buffer for to_string()
};
class VbIter
// = TITLE
// Utility class to iterate once through a PDU varbind list
{
public:
VbIter(Pdu& pdu);
// default constructor
int next(Vb& vb);
// returns 1 if ok, else 0 if none left
private:
VbIter(const VbIter&);
// disallow copy constructor use
int idx_;
// current object in list
Pdu *pdu_;
// ptr to pdu being interated over
};
#endif //PDU_CLS_
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