pdns/axfr-retriever.hh

   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 #pragma once
  23 #include <boost/utility.hpp>
  24
  25 #include "iputils.hh"
  26 #include "dnsname.hh"
  27 #include "resolver.hh"
  28
  29 class AXFRRetriever : public boost::noncopyable
  30 {
  31   public:
  32     AXFRRetriever(const ComboAddress& remote,
  33                   const DNSName& zone,
  34                   const TSIGTriplet& tt = TSIGTriplet(),
  35                   const ComboAddress* laddr = NULL,
  36                   size_t maxReceivedBytes=0,
  37                   uint16_t timeout=10);
  38     ~AXFRRetriever();
  39     int getChunk(Resolver::res_t &res, vector<DNSRecord>* records=0, uint16_t timeout=10);
  40
  41   private:
  42     void connect(uint16_t timeout);
  43     int getLength(uint16_t timeout);
  44     void timeoutReadn(uint16_t bytes, uint16_t timeoutsec=10);
  45
  46     std::vector<char> d_buf;
  47     string d_domain;
  48     int d_sock;
  49     int d_soacount;
  50     ComboAddress d_remote;
  51     TSIGRecordContent d_trc;
  52     TSIGTCPVerifier d_tsigVerifier;
  53
  54     size_t d_receivedBytes;
  55     size_t d_maxReceivedBytes;
  56 };