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-// $Id$
-
-// ============================================================================
-//
-// = LIBRARY
-// asnmp
-//
-// = FILENAME
-// walk.cpp
-//
-// = DESCRIPTION
-// Sample application demonstrating synchronous Snmp::get, 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"
-
-ACE_RCSID(walk, walk, "$Id$")
-
-//
-// SNMPv1 Walk Mib Application
-//
-class walkapp {
- public:
- walkapp(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:
- walkapp(const walkapp&);
-
- 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[])
-{
- walkapp get(argc, argv);
- if (get.valid())
- return get.run();
- else
- walkapp::usage();
- return 1;
-}
-
-walkapp::valid() const
-{
- return valid_;
-}
-
-walkapp::walkapp(int argc, char *argv[]): valid_(0)
-{
- Oid req, def_oid("1.3.6.1.2.1.1.1.0"); // default begin walk with MIBII
- 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 walkapp::usage()
-{
- cout << "Usage:\n";
- cout << "walk [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;
-}
-
-
-//
-// simple mib iterator class
-//
-class MibIter {
- public:
- // Pdu must contain initial oid to begin with
- MibIter(Snmp *snmp, Pdu& pdu, UdpTarget* target);
- int next(Vb& vb, char *&err_reason); // return next oid in mib
-
- private:
- Snmp *snmp_;
- UdpTarget *target_;
- Pdu pdu_;
- Vb vb_;
- int first_; // flag to obtain first entry
- int valid_; // flag to obtain first entry
-};
-
-MibIter::MibIter(Snmp* snmp, Pdu& pdu, UdpTarget *target):
- snmp_(snmp), pdu_(pdu), first_(0),
- valid_(0), target_(target)
-{
- // verify we have a valid oid to begin iterating with
- Oid oid;
- Vb vb;
- pdu.get_vb(vb, 0);
- vb.get_oid(oid);
- if (oid.valid())
- valid_ = 1;
-}
-
-// 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 = snmp_->error_string();
- return 0;
- }
-
- // 2. check for problems
- if (pdu_.get_error_status()) {
- reason = 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
-}
-
-int walkapp::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) << \
- " WALK SAMPLE PROGRAM \nOID: " << oid_.to_string() << "\n";
- target_.get_address(address_); // target updates port used
- int rc;
- char *name = address_.resolve_hostname(rc);
- if (rc)
- name = "<< did not resolve via gethostbyname() >>";
-
- cout << "Device: " << address_ << " " << name << "\n";
- cout << "[ Retries=" << target_.get_retry() << " \
- Timeout=" << target_.get_timeout() <<" ms " << "Community=" << \
- community_.to_string() << " ]"<< endl;
-
- MibIter iter(&snmp_, pdu_, &target_);
- char *err_str = 0;
- Vb vb;
- unsigned ctr = 0;
- while (iter.next(vb, err_str)) {
- cout << "\tOid = " << vb.to_string_oid() << "\n";
- cout << "\tValue = " << vb.to_string_value() << "\n";
- ctr++;
- }
-
- if (!err_str) {
- cout << "ERROR: walk: " << err_str << endl;
- return 0;
- }
-
- cout << "ASNMP:INFO:command completed normally. ACE Rocks...\n"<< endl;
- return 0;
-}
-
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