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check local address

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orignal 2021-02-02 19:29:13 -05:00
parent 05c7aacfa5
commit a74f685a5d
3 changed files with 14 additions and 1 deletions
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3
daemon/Daemon.cpp
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@ -152,7 +152,8 @@ namespace i2p
if (!yggaddress.empty ())
{
yggaddr = boost::asio::ip::address_v6::from_string (yggaddress);
if (yggaddr.is_unspecified () || i2p::util::net::GetMTU (yggaddr) != 0xFFFF) // ygg's MTU is always 65535
if (yggaddr.is_unspecified () || !i2p::util::net::IsYggdrasilAddress (yggaddr) ||
!i2p::util::net::IsLocalAddress (yggaddr))
{
LogPrint(eLogWarning, "Daemon: Can't find Yggdrasil address ", yggaddress);
ygg = false;

11
libi2pd/util.cpp
View file

@ -461,6 +461,17 @@ namespace net
#endif
}
bool IsLocalAddress (const boost::asio::ip::address& addr)
{
auto mtu = // TODO: implement better
#ifdef _WIN32
GetMTUWindows(addr, 0);
#else
GetMTUUnix(addr, 0);
#endif
return mtu > 0;
}
bool IsInReservedRange (const boost::asio::ip::address& host)
{
// https://en.wikipedia.org/wiki/Reserved_IP_addresses

1
libi2pd/util.h
View file

@ -189,6 +189,7 @@ namespace util
int GetMTU (const boost::asio::ip::address& localAddress);
const boost::asio::ip::address GetInterfaceAddress (const std::string & ifname, bool ipv6=false);
boost::asio::ip::address_v6 GetYggdrasilAddress ();
bool IsLocalAddress (const boost::asio::ip::address& addr);
bool IsInReservedRange (const boost::asio::ip::address& host);
bool IsYggdrasilAddress (const boost::asio::ip::address& addr);
}