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// $Id$
// ============================================================================
//
// = LIBRARY
// asnmp
//
// = FILENAME
// next.cpp
//
// = DESCRIPTION
// Sample application demonstrating synchronous Snmp::get_next API
// to access an SNMP Version 1 agent.
//
// = AUTHOR
// Peter E. Mellquist original code
// Michael R MacFaden mrm@cisco.com rework API/ACE integration
//
// ============================================================================
/*===================================================================
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.
=====================================================================*/
#include "asnmp/snmp.h"
#include "ace/Get_Opt.h"
#include "ace/streams.h"
ACE_RCSID(next, next, "$Id$")
//
// SNMPv1 Get Next Application
//
class nextapp {
public:
nextapp(int argc, char **argv); // process command line args
int valid() const; // verify transaction can proceed
int run(); // issue transaction
static void usage(); // operator help message
private:
nextapp(const nextapp&);
UdpAddress address_;
Pdu pdu_; // construct a request Pdu
Oid oid_;
OctetStr community_;
Snmp snmp_;
UdpTarget target_;
int valid_;
};
// main entry point
int main( int argc, char *argv[])
{
nextapp get(argc, argv);
if (get.valid())
return get.run();
else
nextapp::usage();
return 1;
}
int nextapp::valid() const
{
return valid_;
}
nextapp::nextapp(int argc, char *argv[]): valid_(0)
{
Oid req, def_oid("1.3.6.1.2.1.1.1.0"); // default is sysDescr
if ( argc < 2)
return;
address_ = argv[argc - 1];
if ( !address_.valid()) {
cout << "ERROR: Invalid IPv4 address or DNS hostname: " \
<< argv[argc] << "\n";
return;
}
ACE_Get_Opt get_opt (argc, argv, "o:c:r:t:");
for (int c; (c = get_opt ()) != -1; )
switch (c)
{
case 'o':
req = get_opt.optarg;
if (req.valid() == 0)
cout << "ERROR: oid value: " <<get_opt.optarg \
<< "is not valid. using default.\n";
break;
case 'c':
community_ = get_opt.optarg;
target_.set_read_community(community_);
break;
case 'r':
target_.set_retry(ACE_OS::atoi (get_opt.optarg));
break;
case 't':
target_.set_timeout(ACE_OS::atoi (get_opt.optarg));
break;
default:
break;
}
Vb vb; // construct a Vb object
if (req.valid())
vb.set_oid( req); // set the Oid portion of the Vb
else {
vb.set_oid( def_oid); // set the Oid portion of the Vb
}
pdu_ += vb;
vb.get_oid(oid_); // store for later use
valid_ = 1;
}
void nextapp::usage()
{
cout << "Usage:\n";
cout << "next [options] dotted-quad | DNSName[:port]\n";
cout << " -o OID starts with oid after 1.3.6.1.2.1.1.1.0 (mibII sysDescr.0) \n";
cout << " -c Community_name, default is 'public' \n";
cout << " -r N retries default is N = 1 retry\n";
cout << " -t N timeout in seconds default is 1 second" << endl;
}
int nextapp::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_NEXT 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_ << " ";
cout << (rc ? "<< did not resolve via gethostbyname() >>" : name) << "\n";
cout << "[ Retries=" << target_.get_retry() << " \
Timeout=" << target_.get_timeout() <<" ms " << "Community=" << \
community_.to_string() << " ]"<< endl;
if (snmp_.get_next( 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_next command failed reason: " << ptr << endl;
}
cout << "ASNMP:INFO:command completed normally. ACE Rocks...\n"<< endl;
return 0;
}
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