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// $Id$
// ============================================================================
//
// = LIBRARY
// asnmp
//
// = FILENAME
// sagent.cpp
//
// = DESCRIPTION
// SNMP agent class definition. The sagent class provides an object oriented
// approach for creating SNMP Agents. The sagent class is an encapsulation
// of SNMP sessions, gets, sets, etc.
//
// = AUTHOR
// Michael R. MacFaden
//
// ============================================================================
#include "ace/Reactor.h"
#include "ace/SOCK_Dgram.h"
#include "asnmp/oid.h" // snmp++ oid class
#include "asnmp/vb.h" // snbmp++ vb class
#include "asnmp/target.h" // snmp++ target class
#include "asnmp/pdu.h" // snmp++ pdu class
#include "asnmp/snmperrs.h" // error macros and strings
#include "asnmp/address.h" // snmp++ address class defs
#include "asnmp/snmp.h" // manager snmp interface
#include "asnmp/sagent.h" // agent interface
#include "asnmp/transaction.h" // convert from wire to API
ACE_RCSID(asnmp, sagent, "$Id$")
sagent::sagent(unsigned short port): Snmp(port)
{
ACE_TRACE("sagent::sagent(short)");
}
sagent::~sagent()
{
ACE_TRACE("sagent::~sagent");
}
int sagent::handle_input(ACE_HANDLE fd)
{
ACE_TRACE("sagent::handle_input");
transaction tr(iv_snmp_session_); // this section needs a better design
tr.handle_input(fd);
char rcv_com_str[MAX_COMM_STR_LEN];
if (tr.result(pdu_, rcv_com_str) < 0)
return 0;
OctetStr community(rcv_com_str);
const ACE_INET_Addr &ta = tr.get_from_addr();
char buf_tmp[MAXHOSTNAMELEN + 1];
ta.addr_to_string (buf_tmp, MAXHOSTNAMELEN);
UdpAddress ra(buf_tmp);
tgt_.set_address(ra);
// process msg here by calling subclass's implementation
switch (pdu_.get_type()){
case sNMP_PDU_GET:
tgt_.set_read_community(community);
this->handle_get(pdu_, tgt_);
break;
case sNMP_PDU_GETNEXT:
tgt_.set_read_community(community);
this->handle_get_next(pdu_, tgt_);
break;
case sNMP_PDU_SET:
tgt_.set_write_community(community);
this->handle_set(pdu_, tgt_);
break;
default:
ACE_ASSERT(0);
}
return 0;
}
ACE_HANDLE sagent::get_handle() const
{
ACE_TRACE("sagent::get_handle");
return iv_snmp_session_.get_handle();
}
int sagent::respond(Pdu& pdu,UdpTarget& tgt)
{
pdu.set_type(sNMP_PDU_RESPONSE);
transaction tr(pdu, tgt, iv_snmp_session_);
tr.send();
return 0;
}
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