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// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012- OpenVPN Inc.
//
// SPDX-License-Identifier: MPL-2.0 OR AGPL-3.0-only WITH openvpn3-openssl-exception
//
// Get the local MAC addr of the interface that owns the default route
#ifndef OPENVPN_NETCONF_HWADDR_H
#define OPENVPN_NETCONF_HWADDR_H
#include <string>
#include <openvpn/common/platform.hpp>
#include <openvpn/addr/macaddr.hpp>
#if defined(OPENVPN_PLATFORM_WIN) && !defined(OPENVPN_PLATFORM_UWP)
#include <openvpn/tun/win/tunutil.hpp>
#elif defined(OPENVPN_PLATFORM_MAC)
#include <openvpn/tun/mac/gw.hpp>
#elif defined(TARGET_OS_IPHONE)
#include <UIKit/UIKit.h>
#endif
namespace openvpn {
inline std::string get_hwaddr([[maybe_unused]] IP::Addr server_addr)
{
#if defined(OPENVPN_PLATFORM_WIN) && !defined(OPENVPN_PLATFORM_UWP)
const TunWin::Util::BestGateway dg{AF_INET};
if (dg.defined())
{
const TunWin::Util::IPAdaptersInfo ai_list;
const IP_ADAPTER_INFO *ai = ai_list.adapter(dg.interface_index());
if (ai)
{
const MACAddr mac(ai->Address);
return mac.to_string();
}
}
#elif defined(OPENVPN_PLATFORM_MAC)
const MacGatewayInfo gw{server_addr};
if (gw.hwaddr_defined())
{
const MACAddr &mac = gw.hwaddr();
return mac.to_string();
}
#elif defined(TARGET_OS_IPHONE)
// as reported at https://developer.apple.com/library/content/releasenotes/General/WhatsNewIniOS/Articles/iOS7.html#//apple_ref/doc/uid/TP40013162-SW34
// we can't get the MAC address from iOS for privacy reasons, but we can
// use the UUID as unique identifier. It is unique among the App domain,
// meaning that a different app will get a different UUID from this call
const NSString *uuid = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
return std::string([uuid UTF8String]);
#endif
return std::string();
}
} // namespace openvpn
#endif
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