C++ Pdu::get_error_status方法代码示例

void callback( int reason, Snmp *snmp, Pdu &pdu, SnmpTarget &target, void *cd)
{
    Vb nextVb;
    int pdu_error;

    cout << "reason: " << reason << endl
         << "msg: " << snmp->error_msg(reason) << endl;

    pdu_error = pdu.get_error_status();
    if (pdu_error) {
        cout << "Response contains error: "
             << snmp->error_msg(pdu_error)<< endl;
    }
    for (int i=0; i<pdu.get_vb_count(); i++)
    {
        pdu.get_vb(nextVb, i);

        cout << "Oid: " << nextVb.get_printable_oid() << endl
             << "Val: " <<  nextVb.get_printable_value() << endl;
    }

    if (pdu.get_type() == sNMP_PDU_INFORM) {
        cout << "pdu type: " << pdu.get_type() << endl;
        cout << "sending response to inform: " << endl;
        nextVb.set_value("This is the response.");
        pdu.set_vb(nextVb, 0);
        snmp->response(pdu, target);
    }
    cout << endl;
}

void getapp::result(Snmp *, int rc)
{
    Vb vb;
    if (rc < 0)
    {
      const char *ptr = snmp_.error_string();
      cout << "ASNMP:ERROR: get command failed reason: " << ptr << endl;
    }
    else
    {
      // check to see if there are any errors
      if (pdu_.get_error_status())
      {
        cout << "ERROR: agent replied as follows\n";
        cout << pdu_.agent_error_reason() << endl;
      }
      else
      {
        VbIter iter(pdu_);
        while (iter.next(vb))
        {
          cout << "\tOid = " << vb.to_string_oid() << "\n";
          cout << "\tValue = " << vb.to_string_value() << "\n";
        }
      }
    }
    cout << "\nASNMP:INFO: command completed normally.\n"<< endl;
    ACE_Reactor::instance()->end_reactor_event_loop();
}

int getapp::run()
{

   //----------[ create a ASNMP session ]-----------------------------------
   if ( snmp_.valid() != SNMP_CLASS_SUCCESS) {
      cout << "\nASNMP:ERROR:Create session failed: "<<
          snmp_.error_string()<< "\n";
      return 1;
   }

   //--------[ build up ASNMP object needed ]-------------------------------
   if (address_.get_port() == 0)
     address_.set_port(DEF_AGENT_PORT);
   target_.set_address( address_);         // make a target using the address

   //-------[ issue the request, blocked mode ]-----------------------------
   cout << "\nASNMP:INFO:SNMP Version " << (target_.get_version()+ 1) << \
       " GET SAMPLE PROGRAM \nOID: " << oid_.to_string() << "\n";
   target_.get_address(address_); // target updates port used
   int rc;
   const char *name = address_.resolve_hostname(rc);

   cout << "Device: " << address_ << " ";

   //FUZZ: disable check_for_lack_ACE_OS
   cout << (rc ? "<< did not resolve via gethostbyname() >>" : name) << "\n";
   //FUZZ: enable check_for_lack_ACE_OS

   cout << "[ Retries=" << target_.get_retry() << " \
        Timeout=" << target_.get_timeout() <<" ms " << "Community=" << \
         community_.to_string() << " ]"<< endl;

   if (snmp_.get( pdu_, target_) == SNMP_CLASS_SUCCESS) {
       Vb vb;
      // check to see if there are any errors
      if (pdu_.get_error_status()) {
        cout << "ERROR: agent replied as follows\n";
        cout << pdu_.agent_error_reason() << endl;
      }
      else {
        VbIter iter(pdu_);
        while (iter.next(vb)) {
 	  cout << "\tOid = " << vb.to_string_oid() << "\n";
 	  cout << "\tValue = " << vb.to_string_value() << "\n";
       }
     }
   }
   else {
    const char *ptr = snmp_.error_string();
    cout << "ASNMP:ERROR: get command failed reason: " << ptr << endl;
  }

  cout << "\nASNMP:INFO: command completed normally.\n"<< endl;
  return 0;
}

// return vb of next oid in agent tree, return 1 else return 0, reason set
int MibIter::next(Vb& vb, char *& reason)
{
  int rc;

  if (valid_ == 0) // not valid object
     return -1;

  // 1. poll for value
  if (first_ == 0) {
    rc = snmp_->get( pdu_, *target_);
    first_++;
  }
  else {
   rc = snmp_->get_next( pdu_, *target_);
  }

  if (rc != SNMP_CLASS_SUCCESS) {
       reason = const_cast <char*> (snmp_->error_string());
       return 0;
  }

  // 2. check for problems
  if (pdu_.get_error_status()) {
     reason = const_cast <char*> (pdu_.agent_error_reason());
     return 0;
  }

  // 3. return vb to caller
  pdu_.get_vb(vb, 0);
  Oid nextoid;
  vb.get_oid(nextoid); // and setup next oid to get
  Vb nextvb(nextoid);
  pdu_.delete_all_vbs();
  pdu_ += nextvb; // can't do set_vb as there are no entries to replace

  return 1; // ok
}

void MainWindow::async_callback(int reason, Snmp * /*snmp*/, Pdu &pdu,
				SnmpTarget &target)
{
  Vb nextVb;
  int pdu_error;
  QString prefix_text;
  QString notify_text;

  push_button_get_next->setEnabled(true);

  // What is the reason for this callback?
  if (reason == SNMP_CLASS_NOTIFICATION)
  {
    prefix_text = "Trap:    ";

    // get the notify id for traps
    Oid id;
    pdu.get_notify_id(id);
    notify_text = QString(" ID: %1 Type %2 -- ").arg(id.get_printable())
                  .arg(pdu.get_type());
  }
  else if (reason == SNMP_CLASS_ASYNC_RESPONSE)
  {
    prefix_text = "Response ";
  }
  else if (reason == SNMP_CLASS_TIMEOUT)
  {
    prefix_text = "Timeout  ";
  }
  else
  {
    QString err = QString("\nDid not receive async response/trap: (%1) %2\n")
                  .arg(reason).arg(Snmp::error_msg(reason));
    text_edit_output->append(err);
  }


  // Look at the error status of the Pdu
  pdu_error = pdu.get_error_status();
  if (pdu_error)
  {
    QString err = "\nResponse contains error:\n";
    err += Snmp::error_msg(pdu_error);
    text_edit_output->append(err);
    return;
  }

  // The Pdu must contain at least one Vb
  if (pdu.get_vb_count() == 0)
  {
    QString err = "\nPdu is empty\n";
    text_edit_output->append(err);
    return;
  }

  for (int i=0; i<pdu.get_vb_count(); i++)
  {
    // Get the Vb of the Pdu
    pdu.get_vb(nextVb, i);

    // Get Oid and value from the Vb and display it
    line_edit_obj_id->setText(nextVb.get_printable_oid());
    line_edit_value->setText(nextVb.get_printable_value());

    text_edit_output->append(prefix_text +
			     target.get_address().get_printable() +
			     " -- " +
			     notify_text +
			     line_edit_obj_id->text() + " = " +
			     line_edit_value->text() + "\n");
  }

  // If we received a inform pdu, we have to send a response
  if (pdu.get_type() == sNMP_PDU_INFORM)
  {
    text_edit_output->append("Sending response to inform.\n");

    // just change the value of the first vb
    pdu.get_vb(nextVb, 0);
    nextVb.set_value("This is the response.");
    pdu.set_vb(nextVb, 0);
    snmp->response(pdu, target);
  }
}

wpdu::wpdu(const Pdu& pdu, const UdpTarget& target):
   valid_flag_(SNMP_CLASS_INVALID ), comm_len(MAX_COMM_STR_LEN)
{
   reset_iov(iovec_);
   version_ = target.get_version();
   int status;
   OctetStr comm_str;

   community_name[0] = 0;

   snmp_pdu *raw_pdu;   // create a raw pdu
   raw_pdu = cmu_snmp::pdu_create( (int) pdu.get_type());
   if (!raw_pdu) {
     valid_flag_ = SNMP_CLASS_RESOURCE_UNAVAIL;
     return;
   }

   raw_pdu->reqid = pdu.get_request_id();
   raw_pdu->errstat= (unsigned long) pdu.get_error_status();
   raw_pdu->errindex= (unsigned long) pdu.get_error_index();

   switch (raw_pdu->command) {
     case sNMP_PDU_GET:
     case sNMP_PDU_GETNEXT:
       target.get_read_community(comm_str);
       break;

     case sNMP_PDU_SET:
       target.get_write_community(comm_str);
       break;

     case sNMP_PDU_V1TRAP:
       target.get_read_community(comm_str);
       if (set_trap_info(raw_pdu, pdu)) // will free raw_pdu
          return;
       break;
     case sNMP_PDU_RESPONSE:
       break;

   default:
     ACE_ASSERT(0);
     return;
   }

   if (load_vbs(raw_pdu, pdu)) {
     cmu_snmp::free_pdu( raw_pdu);
     valid_flag_ = SNMP_CLASS_RESOURCE_UNAVAIL;
     return;
   }

   // TODO: determine how big raw_pdu serializes out to
   iovec_.iov_len = target.get_max_pdu_size();
   ACE_NEW(iovec_.iov_base, char [iovec_.iov_len]);

   // create raw byte stream
   // The intermediate integer is to avoid type-punned pointer
   // dereferencing.
   int out_length = iovec_.iov_len;
   status = cmu_snmp::build( raw_pdu,
                            (unsigned char *)iovec_.iov_base,
                            &out_length,
                            target.get_version(),
                            comm_str.data(),
                            comm_str.length());
   iovec_.iov_len = out_length;

   if ( status != 0) {
     valid_flag_ = SNMP_ERROR_WRONG_ENCODING;
     cmu_snmp::free_pdu( raw_pdu);
     return;
   }

   cmu_snmp::free_pdu( raw_pdu);
   valid_flag_ = SNMP_CLASS_SUCCESS;
}