mirror of
https://github.com/matrix-construct/construct
synced 2024-11-04 21:08:57 +01:00
130 lines
2.5 KiB
C++
130 lines
2.5 KiB
C++
// The Construct
|
|
//
|
|
// Copyright (C) The Construct Developers, Authors & Contributors
|
|
// Copyright (C) 2016-2020 Jason Volk <jason@zemos.net>
|
|
//
|
|
// Permission to use, copy, modify, and/or distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice is present in all copies. The
|
|
// full license for this software is available in the LICENSE file.
|
|
|
|
#include <RB_INC_IFADDRS_H
|
|
|
|
#ifdef HAVE_IFADDRS_H
|
|
bool
|
|
ircd::net::addrs::has_usable_ipv6_interface()
|
|
try
|
|
{
|
|
return !for_each([](const addr &a)
|
|
{
|
|
if(a.family != AF_INET6)
|
|
return true;
|
|
|
|
if(a.scope_id != 0) // global scope
|
|
return true;
|
|
|
|
if(~a.flags & IFF_UP) // not up
|
|
return true;
|
|
|
|
if(a.flags & IFF_LOOPBACK) // not usable
|
|
return true;
|
|
|
|
// return false to break
|
|
return false;
|
|
});
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::error
|
|
{
|
|
log, "Failed to check for usable IPv6 interfaces :%s",
|
|
e.what()
|
|
};
|
|
|
|
return false;
|
|
}
|
|
#else
|
|
bool
|
|
ircd::net::addrs::has_usable_ipv6_interface()
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_IFADDRS_H
|
|
bool
|
|
__attribute__((optimize(0))) //XXX: trouble
|
|
ircd::net::addrs::for_each(const closure &closure)
|
|
{
|
|
return for_each(raw_closure{[&closure]
|
|
(const struct ::ifaddrs *const &ifa)
|
|
{
|
|
addr a;
|
|
a.name = ifa->ifa_name;
|
|
a.flags = ifa->ifa_flags;
|
|
if(ifa->ifa_addr) switch(ifa->ifa_addr->sa_family)
|
|
{
|
|
case AF_INET6:
|
|
{
|
|
const auto sin(reinterpret_cast<const struct ::sockaddr_in6 *>(ifa->ifa_addr));
|
|
const auto ip(reinterpret_cast<const uint128_t *>(sin->sin6_addr.s6_addr));
|
|
a.family = sin->sin6_family;
|
|
a.scope_id = sin->sin6_scope_id;
|
|
a.flowinfo = sin->sin6_flowinfo;
|
|
a.address =
|
|
{
|
|
ntoh(*ip), sin->sin6_port
|
|
};
|
|
break;
|
|
}
|
|
|
|
case AF_INET:
|
|
{
|
|
const auto &sin(reinterpret_cast<const struct ::sockaddr_in *>(ifa->ifa_addr));
|
|
a.family = sin->sin_family;
|
|
a.address =
|
|
{
|
|
ntoh(sin->sin_addr.s_addr), sin->sin_port
|
|
};
|
|
break;
|
|
}
|
|
|
|
default:
|
|
return true;
|
|
}
|
|
|
|
return closure(a);
|
|
}});
|
|
}
|
|
#else
|
|
bool
|
|
ircd::net::addrs::for_each(const closure &closure)
|
|
{
|
|
return true;
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_IFADDRS_H
|
|
bool
|
|
ircd::net::addrs::for_each(const raw_closure &closure)
|
|
{
|
|
struct ::ifaddrs *ifap_;
|
|
syscall(::getifaddrs, &ifap_);
|
|
const custom_ptr<struct ::ifaddrs> ifap
|
|
{
|
|
ifap_, ::freeifaddrs
|
|
};
|
|
|
|
for(auto ifa(ifap.get()); ifa; ifa = ifa->ifa_next)
|
|
if(!closure(ifa))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
#else
|
|
bool
|
|
ircd::net::addrs::for_each(const raw_closure &closure)
|
|
{
|
|
return true;
|
|
}
|
|
#endif
|