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;
}