libzmq/src/ip_resolver.hpp
Luca Boccassi da31917f4f Relicense from LGPL3 + exceptions to Mozilla Public License version 2.0
Relicense permission collected from all relevant authors as tallied at:
https://github.com/rlenferink/libzmq-relicense/blob/master/checklist.md
The relicense grants are collected under RELICENSE/ and will be moved
to the above repository in a later commit.

Fixes https://github.com/zeromq/libzmq/issues/2376
2023-06-05 20:31:47 +01:00

95 lines
2.2 KiB
C++

/* SPDX-License-Identifier: MPL-2.0 */
#ifndef __ZMQ_IP_RESOLVER_HPP_INCLUDED__
#define __ZMQ_IP_RESOLVER_HPP_INCLUDED__
#if !defined ZMQ_HAVE_WINDOWS
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#endif
#include "address.hpp"
namespace zmq
{
union ip_addr_t
{
sockaddr generic;
sockaddr_in ipv4;
sockaddr_in6 ipv6;
int family () const;
bool is_multicast () const;
uint16_t port () const;
const struct sockaddr *as_sockaddr () const;
zmq_socklen_t sockaddr_len () const;
void set_port (uint16_t);
static ip_addr_t any (int family_);
};
class ip_resolver_options_t
{
public:
ip_resolver_options_t ();
ip_resolver_options_t &bindable (bool bindable_);
ip_resolver_options_t &allow_nic_name (bool allow_);
ip_resolver_options_t &ipv6 (bool ipv6_);
ip_resolver_options_t &expect_port (bool expect_);
ip_resolver_options_t &allow_dns (bool allow_);
ip_resolver_options_t &allow_path (bool allow_);
bool bindable ();
bool allow_nic_name ();
bool ipv6 ();
bool expect_port ();
bool allow_dns ();
bool allow_path ();
private:
bool _bindable_wanted;
bool _nic_name_allowed;
bool _ipv6_wanted;
bool _port_expected;
bool _dns_allowed;
bool _path_allowed;
};
class ip_resolver_t
{
public:
ip_resolver_t (ip_resolver_options_t opts_);
virtual ~ip_resolver_t (){};
int resolve (ip_addr_t *ip_addr_, const char *name_);
protected:
// Virtual functions that are overridden in tests
virtual int do_getaddrinfo (const char *node_,
const char *service_,
const struct addrinfo *hints_,
struct addrinfo **res_);
virtual void do_freeaddrinfo (struct addrinfo *res_);
virtual unsigned int do_if_nametoindex (const char *ifname_);
private:
ip_resolver_options_t _options;
int resolve_nic_name (ip_addr_t *ip_addr_, const char *nic_);
int resolve_getaddrinfo (ip_addr_t *ip_addr_, const char *addr_);
#if defined ZMQ_HAVE_WINDOWS
int get_interface_name (unsigned long index_, char **dest_) const;
int wchar_to_utf8 (const WCHAR *src_, char **dest_) const;
#endif
};
}
#endif