summaryrefslogtreecommitdiff
path: root/ACE/ASNMP/examples/walk/walk.cpp
blob: 2e67e2b4438d2f802395f4b626ea396b471c34c1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
// $Id$

// ============================================================================
//
// = 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/Argv_Type_Converter.h"
#include "ace/Get_Opt.h"
// FUZZ: disable check_for_streams_include
#include "ace/streams.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;
}

int 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_Argv_Type_Converter to_tchar (argc, argv);
   ACE_Get_Opt get_opt (argc,
                        to_tchar.get_TCHAR_argv (),
                        ACE_TEXT ("o:c:r:t:"));
   for (int c; (c = get_opt ()) != -1; )
     switch (c)
       {
       case 'o':
         req = ACE_TEXT_ALWAYS_CHAR (get_opt.opt_arg());
         if (req.valid() == 0)
         cout << "ERROR: oid value: "
              << ACE_TEXT_ALWAYS_CHAR (get_opt.opt_arg())
              << "is not valid. using default.\n";
         break;

       case 'c':
         community_ = ACE_TEXT_ALWAYS_CHAR (get_opt.opt_arg());
         target_.set_read_community(community_);
         break;

       case 'r':
         target_.set_retry(ACE_OS::atoi (get_opt.opt_arg()));
         break;

       case 't':
         target_.set_timeout(ACE_OS::atoi (get_opt.opt_arg()));
         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), target_(target), pdu_(pdu), first_(0),
 valid_(0)
{
  // 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 = 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
}

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;
   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;

   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;
}