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#if !defined ZMQ_HAVE_WINDOWS
34#include <sys/socket.h>
35#include <netinet/in.h>
36#endif
37
38#include "ip_resolver.hpp"
39
40namespace zmq
41{
42class tcp_address_t
43{
44 public:
45 tcp_address_t ();
46 tcp_address_t (const sockaddr *sa_, socklen_t sa_len_);
47
48 // This function translates textual TCP address into an address
49 // structure. If 'local' is true, names are resolved as local interface
50 // names. If it is false, names are resolved as remote hostnames.
51 // If 'ipv6' is true, the name may resolve to IPv6 address.
52 int resolve (const char *name_, bool local_, bool ipv6_);
53
54 // The opposite to resolve()
55 int to_string (std::string &addr_) const;
56
57#if defined ZMQ_HAVE_WINDOWS
58 unsigned short family () const;
59#else
60 sa_family_t family () const;
61#endif
62 const sockaddr *addr () const;
63 socklen_t addrlen () const;
64
65 const sockaddr *src_addr () const;
66 socklen_t src_addrlen () const;
67 bool has_src_addr () const;
68
69 private:
70 ip_addr_t _address;
71 ip_addr_t _source_address;
72 bool _has_src_addr;
73};
74
75class tcp_address_mask_t
76{
77 public:
78 tcp_address_mask_t ();
79
80 // This function enhances tcp_address_t::resolve() with ability to parse
81 // additional cidr-like(/xx) mask value at the end of the name string.
82 // Works only with remote hostnames.
83 int resolve (const char *name_, bool ipv6_);
84
85 // The opposite to resolve()
86 int to_string (std::string &addr_) const;
87
88 int mask () const;
89
90 bool match_address (const struct sockaddr *ss_,
91 const socklen_t ss_len_) const;
92
93 private:
94 ip_addr_t _network_address;
95 int _address_mask;
96};
97}
98
99#endif
100