pdns/dnsdemog.cc

   1 /*
   2  * This file is part of PowerDNS or dnsdist.
   3  * Copyright -- PowerDNS.COM B.V. and its contributors
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * In addition, for the avoidance of any doubt, permission is granted to
  10  * link this program with OpenSSL and to (re)distribute the binaries
  11  * produced as the result of such linking.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22 #define __FAVOR_BSD
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26 #include "statbag.hh"
  27 #include "dnspcap.hh"
  28 #include "dnsparser.hh"
  29 #include <map>
  30 #include <set>
  31 #include <fstream>
  32 #include <algorithm>
  33 #include "anadns.hh"
  34
  35 #include "namespaces.hh"
  36
  37 StatBag S;
  38
  39 struct Entry
  40 {
  41   ComboAddress ip;
  42   uint16_t port;
  43   uint16_t id;
  44
  45   bool operator<(const struct Entry& rhs) const
  46   {
  47     return std::tie(ip, port, id) < std::tie(rhs.ip, rhs.port, rhs.id);
  48   }
  49 };
  50
  51
  52 typedef map<Entry, uint32_t> emap_t;
  53 emap_t ecount;
  54
  55 int main(int argc, char** argv)
  56 try
  57 {
  58   cout << "begin;";
  59   for(int n=1 ; n < argc; ++n) {
  60     PcapPacketReader pr(argv[n]);
  61
  62     Entry entry;
  63     while(pr.getUDPPacket()) {
  64       if(ntohs(pr.d_udp->uh_dport)==53 &&  pr.d_len > 12) {
  65         try {
  66           dnsheader* dh= (dnsheader*) pr.d_payload;
  67
  68           if(dh->rd || dh->qr)
  69             continue;
  70
  71           MOADNSParser mdp(false, (const char*)pr.d_payload, pr.d_len);
  72
  73           entry.ip = pr.getSource();
  74           entry.port = pr.d_udp->uh_sport;
  75           entry.id=dh->id;
  76
  77           cout << "insert into dnsstats (source, port, id, query, qtype, tstampSec, tstampUsec, arcount) values ('" << entry.ip.toString() <<"', "<< ntohs(entry.port) <<", "<< ntohs(dh->id);
  78           cout <<", '"<<mdp.d_qname<<"', "<<mdp.d_qtype<<", " << pr.d_pheader.ts.tv_sec <<", " << pr.d_pheader.ts.tv_usec;
  79           cout <<", "<< ntohs(dh->arcount) <<");\n";
  80
  81         }
  82         catch(const MOADNSException &mde) {
  83           //        cerr<<"error parsing packet: "<<mde.what()<<endl;
  84           continue;
  85         }
  86         catch(std::exception& e) {
  87           cerr << e.what() << endl;
  88           continue;
  89         }
  90       }
  91     }
  92   }
  93   cout <<"commit;";
  94   /*
  95   for(emap_t::const_iterator i = ecount.begin(); i != ecount.end(); ++i) {
  96     if(i->second > 1)
  97       cout << U32ToIP(ntohl(i->first.ip)) <<":"<<ntohs(i->first.port)<<" -> "<<i->second <<endl;
  98   }
  99   */
 100
 101 }
 102 catch(std::exception& e)
 103 {
 104   cerr<<"Fatal: "<<e.what()<<endl;
 105 }