pdns/lwres.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_LWRES_HH
  23 #define PDNS_LWRES_HH
  24 #include <string>
  25 #include <vector>
  26 #include <sys/types.h>
  27 #include "misc.hh"
  28 #include "iputils.hh"
  29 #include <netdb.h>
  30 #include <unistd.h>
  31 #include <sys/time.h>
  32 #include <sys/uio.h>
  33 #include <fcntl.h>
  34 #include <sys/socket.h>
  35 #include <netinet/in.h>
  36 #include "dnsparser.hh"
  37 #include <arpa/inet.h>
  38 #undef res_mkquery
  39
  40 #include "pdnsexception.hh"
  41 #include "dns.hh"
  42 #include "namespaces.hh"
  43
  44 int asendto(const char *data, size_t len, int flags, const ComboAddress& ip, uint16_t id,
  45             const DNSName& domain, uint16_t qtype,  int* fd);
  46 int arecvfrom(char *data, size_t len, int flags, const ComboAddress& ip, size_t *d_len, uint16_t id,
  47               const DNSName& domain, uint16_t qtype, int fd, struct timeval* now);
  48
  49 class LWResException : public PDNSException
  50 {
  51 public:
  52   LWResException(const string &reason) : PDNSException(reason){}
  53 };
  54
  55 //! LWRes class
  56 class LWResult
  57 {
  58 public:
  59   LWResult() : d_usec(0) {}
  60
  61   vector<DNSRecord> d_records;
  62   int d_rcode{0};
  63   bool d_aabit{false}, d_tcbit{false};
  64   uint32_t d_usec{0};
  65   bool d_haveEDNS{false};
  66 };
  67
  68 int asyncresolve(const ComboAddress& ip, const DNSName& domain, int type, bool doTCP, bool sendRDQuery, int EDNS0Level, struct timeval* now, boost::optional<Netmask>& srcmask, LWResult* res);
  69 #endif // PDNS_LWRES_HH