Line data    Source code

       1             : /*
       2             :     Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
       3             : 
       4             :     This file is part of libzmq, the ZeroMQ core engine in C++.
       5             : 
       6             :     libzmq is free software; you can redistribute it and/or modify it under
       7             :     the terms of the GNU Lesser General Public License (LGPL) as published
       8             :     by the Free Software Foundation; either version 3 of the License, or
       9             :     (at your option) any later version.
      10             : 
      11             :     As a special exception, the Contributors give you permission to link
      12             :     this library with independent modules to produce an executable,
      13             :     regardless of the license terms of these independent modules, and to
      14             :     copy and distribute the resulting executable under terms of your choice,
      15             :     provided that you also meet, for each linked independent module, the
      16             :     terms and conditions of the license of that module. An independent
      17             :     module is a module which is not derived from or based on this library.
      18             :     If you modify this library, you must extend this exception to your
      19             :     version of the library.
      20             : 
      21             :     libzmq is distributed in the hope that it will be useful, but WITHOUT
      22             :     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
      23             :     FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
      24             :     License for more details.
      25             : 
      26             :     You should have received a copy of the GNU Lesser General Public License
      27             :     along with this program.  If not, see <http://www.gnu.org/licenses/>.
      28             : */
      29             : 
      30             : #ifndef __ZMQ_TCP_ADDRESS_HPP_INCLUDED__
      31             : #define __ZMQ_TCP_ADDRESS_HPP_INCLUDED__
      32             : 
      33             : #include "platform.hpp"
      34             : 
      35             : #if defined ZMQ_HAVE_WINDOWS
      36             : #include "windows.hpp"
      37             : #else
      38             : #include <sys/socket.h>
      39             : #include <netinet/in.h>
      40             : #endif
      41             : 
      42             : namespace zmq
      43             : {
      44             : 
      45           0 :     class tcp_address_t
      46             :     {
      47             :     public:
      48             : 
      49             :         tcp_address_t ();
      50             :         tcp_address_t (const sockaddr *sa, socklen_t sa_len);
      51             :         virtual ~tcp_address_t ();
      52             : 
      53             :         //  This function translates textual TCP address into an address
      54             :         //  structure. If 'local' is true, names are resolved as local interface
      55             :         //  names. If it is false, names are resolved as remote hostnames.
      56             :         //  If 'ipv6' is true, the name may resolve to IPv6 address.
      57             :         int resolve (const char *name_, bool local_, bool ipv6_, bool is_src_ = false);
      58             : 
      59             :         //  The opposite to resolve()
      60             :         virtual int to_string (std::string &addr_);
      61             : 
      62             : #if defined ZMQ_HAVE_WINDOWS
      63             :         unsigned short family () const;
      64             : #else
      65             :         sa_family_t family () const;
      66             : #endif
      67             :         const sockaddr *addr () const;
      68             :         socklen_t addrlen () const;
      69             : 
      70             :         const sockaddr *src_addr () const;
      71             :         socklen_t src_addrlen () const;
      72             :         bool has_src_addr () const;
      73             : 
      74             :     protected:
      75             :         int resolve_nic_name (const char *nic_, bool ipv6_, bool is_src_ = false);
      76             :         int resolve_interface (const char *interface_, bool ipv6_, bool is_src_ = false);
      77             :         int resolve_hostname (const char *hostname_, bool ipv6_, bool is_src_ = false);
      78             : 
      79             :         union {
      80             :             sockaddr generic;
      81             :             sockaddr_in ipv4;
      82             :             sockaddr_in6 ipv6;
      83             :         } address;
      84             : 
      85             :         union {
      86             :             sockaddr generic;
      87             :             sockaddr_in ipv4;
      88             :             sockaddr_in6 ipv6;
      89             :         } source_address;
      90             :         bool _has_src_addr;
      91             :     };
      92             : 
      93           0 :     class tcp_address_mask_t : public tcp_address_t
      94             :     {
      95             :     public:
      96             :         tcp_address_mask_t ();
      97             : 
      98             :         // This function enhances tcp_address_t::resolve() with ability to parse
      99             :         // additional cidr-like(/xx) mask value at the end of the name string.
     100             :         // Works only with remote hostnames.
     101             :         int resolve (const char *name_, bool ipv6_);
     102             : 
     103             :         // The opposite to resolve()
     104             :         int to_string (std::string &addr_);
     105             : 
     106             :         int mask () const;
     107             : 
     108             :         bool match_address (const struct sockaddr *ss, const socklen_t ss_len) const;
     109             : 
     110             :     private:
     111             :         int address_mask;
     112             :     };
     113             : 
     114             : }
     115             : 
     116             : #endif