pdns/signingpipe.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 #ifndef PDNS_SIGNINGPIPE
  23 #define PDNS_SIGNINGPIPE
  24 #include <vector>
  25 #include <pthread.h>
  26 #include <stdio.h>
  27 #include "dnsseckeeper.hh"
  28 #include "dns.hh"
  29
  30 void writeLStringToSocket(int fd, const string& msg);
  31 bool readLStringFromSocket(int fd, string& msg);
  32
  33 /** input: DNSZoneRecords ordered in qname,qtype (we emit a signature chunk on a break)
  34  *  output: "chunks" of those very same DNSZoneRecords, interleaved with signatures
  35  */
  36
  37 class ChunkedSigningPipe
  38 {
  39 public:
  40   typedef vector<DNSZoneRecord> rrset_t;
  41   typedef rrset_t chunk_t; // for now
  42
  43   ChunkedSigningPipe(const DNSName& signerName, bool mustSign, /* FIXME servers is unused? */ const string& servers=string(), unsigned int numWorkers=3);
  44   ~ChunkedSigningPipe();
  45   bool submit(const DNSZoneRecord& rr);
  46   chunk_t getChunk(bool final=false);
  47
  48   std::atomic<unsigned long> d_signed;
  49   int d_queued;
  50   int d_outstanding;
  51   unsigned int getReady();
  52 private:
  53   void flushToSign();
  54   void dedupRRSet();
  55   void sendRRSetToWorker(); // dispatch RRSET to worker
  56   void addSignedToChunks(chunk_t* signedChunk);
  57   pair<vector<int>, vector<int> > waitForRW(bool rd, bool wr, int seconds);
  58
  59   void worker(int n, int fd);
  60
  61   static void* helperWorker(void* p);
  62
  63   unsigned int d_numworkers;
  64   int d_submitted;
  65
  66   rrset_t* d_rrsetToSign;
  67   std::deque< std::vector<DNSZoneRecord> > d_chunks;
  68   DNSName d_signer;
  69
  70   chunk_t::size_type d_maxchunkrecords;
  71
  72   std::vector<int> d_sockets;
  73   std::set<int> d_eof;
  74   vector<pthread_t> d_tids;
  75   bool d_mustSign;
  76   bool d_final;
  77 };
  78
  79 #endif