pdns/dynmessenger.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 DYNMESSENGER_HH
  23 #define DYNMESSENGER_HH
  24
  25 #include <string>
  26 #include <sys/types.h>
  27 #include <sys/socket.h>
  28 #include <netinet/in.h>
  29 #include <sys/un.h>
  30 #include <unistd.h>
  31 #include <libgen.h>
  32 #include <errno.h>
  33 #include "iputils.hh"
  34 #include "pdnsexception.hh"
  35
  36 #include "namespaces.hh"
  37
  38 //! The DynMessenger can send messages to UNIX domain sockets and TCP sockets
  39 class DynMessenger
  40 {
  41   int d_s;
  42
  43   struct sockaddr_un d_remote; // our remote address
  44
  45   DynMessenger(const DynMessenger &); // NOT IMPLEMENTED
  46
  47 public:
  48   // CREATORS
  49
  50   DynMessenger(const string &filename,
  51     int timeout_sec = 7,
  52     int timeout_usec = 0);  //!< Create a DynMessenger sending to this file
  53
  54   DynMessenger(const ComboAddress& remote,
  55     const string &password,
  56     int timeout_sec = 7,
  57     int timeout_usec = 0);  //!< Create a DynMessenger sending to this file
  58
  59   ~DynMessenger();
  60
  61   // ACCESSORS
  62   int send(const string &message) const; //!< Send a message to a DynListener
  63   string receive() const; //!< receive an answer from a DynListener
  64 };
  65
  66 #endif